style: fix formatting via prettier

web/.prettierignore

@@ -6,3 +6,4 @@ pnpm-lock.yaml
 static
 *.log
 .DS_Store
+audit

web/README.md

@@ -1,6 +1,7 @@
 # sv
 
-Everything you need to build a Svelte project, powered by [`sv`](https://github.com/sveltejs/cli).
+Everything you need to build a Svelte project, powered by
+[`sv`](https://github.com/sveltejs/cli).
 
 ## Creating a project
 
@@ -20,7 +21,8 @@ pnpm dlx sv@0.17.0 create --template minimal --types ts --install pnpm web
 
 ## Developing
 
-Once you've created a project and installed dependencies with `npm install` (or `pnpm install` or `yarn`), start a development server:
+Once you've created a project and installed dependencies with `npm install` (or
+`pnpm install` or `yarn`), start a development server:
 
 ```sh
 npm run dev
@@ -39,4 +41,5 @@ npm run build
 
 You can preview the production build with `npm run preview`.
 
-> To deploy your app, you may need to install an [adapter](https://svelte.dev/docs/kit/adapters) for your target environment.
+> To deploy your app, you may need to install an
+> [adapter](https://svelte.dev/docs/kit/adapters) for your target environment.

web/scripts/audit.mjs

@@ -38,7 +38,7 @@ const FIELDS = [
 	"lineHeight",
 	"borderRadius",
 	"display",
-	"gap"
+	"gap",
 ];
 
 const waitFor = async (url, ms = 60000) => {
@@ -58,7 +58,8 @@ const snapshot = (page, url) =>
 		const readTokens = () => {
 			const s = getComputedStyle(document.documentElement);
 			const out = {};
-			for (const k of s) if (k.startsWith("--")) out[k] = s.getPropertyValue(k).trim();
+			for (const k of s)
+				if (k.startsWith("--")) out[k] = s.getPropertyValue(k).trim();
 			return out;
 		};
 		const tokensLight = readTokens();
@@ -85,14 +86,19 @@ const snapshot = (page, url) =>
 				"lineHeight",
 				"borderRadius",
 				"display",
-				"gap"
+				"gap",
 			])
 				o[f] = s[f];
 			return o;
 		};
 		const rect = (el) => {
 			const r = el.getBoundingClientRect();
-			return { x: Math.round(r.x), y: Math.round(r.y), w: Math.round(r.width), h: Math.round(r.height) };
+			return {
+				x: Math.round(r.x),
+				y: Math.round(r.y),
+				w: Math.round(r.width),
+				h: Math.round(r.height),
+			};
 		};
 		const walk = (el, path) => {
 			if (["SCRIPT", "STYLE", "NOSCRIPT"].includes(el.tagName)) return [];
@@ -101,12 +107,18 @@ const snapshot = (page, url) =>
 			out.push({
 				path,
 				tag: el.tagName.toLowerCase(),
-				text: el.children.length === 0 ? el.textContent.trim().slice(0, 40) : "",
+				text:
+					el.children.length === 0 ? el.textContent.trim().slice(0, 40) : "",
 				rect: rect(el),
-				style: sig(el)
+				style: sig(el),
 			});
 			for (let i = 0; i < kids.length; i++)
-				out.push(...walk(kids[i], `${path}>${kids[i].tagName.toLowerCase()}:nth-child(${i + 1})`));
+				out.push(
+					...walk(
+						kids[i],
+						`${path}>${kids[i].tagName.toLowerCase()}:nth-child(${i + 1})`,
+					),
+				);
 			return out;
 		};
 		return { tokensLight, tokensDark, tree: walk(document.body, "body") };
@@ -120,13 +132,16 @@ async function main() {
 			cwd: WEB,
 			stdio: "ignore",
 			shell: true,
-			detached: process.platform !== "win32"
+			detached: process.platform !== "win32",
 		});
 		await waitFor(OURS);
 	}
 
 	const browser = await chromium.launch();
-	const page = await browser.newPage({ viewport: { width: 1440, height: 900 }, deviceScaleFactor: 1 });
+	const page = await browser.newPage({
+		viewport: { width: 1440, height: 900 },
+		deviceScaleFactor: 1,
+	});
 	try {
 		await page.goto(OURS, { waitUntil: "load" });
 		await page.evaluate(() => document.fonts.ready);
@@ -154,7 +169,7 @@ async function main() {
 		};
 		const tokenDiffs = {
 			light: tokDiff(ours.tokensLight, ref.tokensLight),
-			dark: tokDiff(ours.tokensDark, ref.tokensDark)
+			dark: tokDiff(ours.tokensDark, ref.tokensDark),
 		};
 
 		// element diff: совпадающие по тексту элементы (структуры разные,
@@ -183,9 +198,15 @@ async function main() {
 			}
 			const dr = o.rect;
 			const rr = r.rect;
-			if (Math.abs(dr.x - rr.x) > 2 || Math.abs(dr.y - rr.y) > 2 || Math.abs(dr.w - rr.w) > 2 || Math.abs(dr.h - rr.h) > 2)
+			if (
+				Math.abs(dr.x - rr.x) > 2 ||
+				Math.abs(dr.y - rr.y) > 2 ||
+				Math.abs(dr.w - rr.w) > 2 ||
+				Math.abs(dr.h - rr.h) > 2
+			)
 				deltas.rect = { ours: dr, ref: rr };
-			if (Object.keys(deltas).length) elementDiffs.push({ path: o.path, tag: o.tag, text: k, deltas });
+			if (Object.keys(deltas).length)
+				elementDiffs.push({ path: o.path, tag: o.tag, text: k, deltas });
 		}
 		for (const [k] of txtR) if (!txtO.has(k)) onlyRef.push(k);
 
@@ -202,16 +223,22 @@ async function main() {
 				tokenDark: tokenDiffs.dark.length,
 				elements: elementDiffs.length,
 				onlyOurs: onlyOurs.length,
-				onlyRef: onlyRef.length
-			}
+				onlyRef: onlyRef.length,
+			},
 		};
 
 		mkdirSync(resolve(WEB, "audit"), { recursive: true });
-		writeFileSync(resolve(WEB, "audit/audit-report.json"), JSON.stringify(report, null, 2));
-		writeFileSync(resolve(WEB, "audit/audit-report.md"), toMarkdown(report, ours, ref));
+		writeFileSync(
+			resolve(WEB, "audit/audit-report.json"),
+			JSON.stringify(report, null, 2),
+		);
+		writeFileSync(
+			resolve(WEB, "audit/audit-report.md"),
+			toMarkdown(report, ours, ref),
+		);
 		console.log(
 			`audit done: tokens light/dark=${tokenDiffs.light.length}/${tokenDiffs.dark.length}, ` +
-				`elements=${elementDiffs.length}, onlyOurs=${onlyOurs.length}, onlyRef=${onlyRef.length}`
+				`elements=${elementDiffs.length}, onlyOurs=${onlyOurs.length}, onlyRef=${onlyRef.length}`,
 		);
 		console.log(`report: web/audit/audit-report.md`);
 	} finally {
@@ -219,7 +246,9 @@ async function main() {
 		if (server) {
 			try {
 				if (process.platform === "win32")
-					spawn("taskkill", ["/pid", String(server.pid), "/f", "/t"], { stdio: "ignore" });
+					spawn("taskkill", ["/pid", String(server.pid), "/f", "/t"], {
+						stdio: "ignore",
+					});
 				else server.kill("SIGTERM");
 			} catch {}
 		}
@@ -233,24 +262,25 @@ function toMarkdown(report, ours, ref) {
 				rows.map((r) => `| \`${r.key}\` | ${r.ours} | ${r.ref} |`).join("\n")
 			: "_все совпадают_";
 	const sorted = [...report.elementDiffs].sort(
-		(x, y) => Object.keys(y.deltas).length - Object.keys(x.deltas).length
+		(x, y) => Object.keys(y.deltas).length - Object.keys(x.deltas).length,
 	);
 	const elRows = sorted
 		.slice(0, 100)
 		.map((e) => {
-		const d = Object.entries(e.deltas)
-			.map(([k, v]) => {
-				if (k === "rect") {
-					const f = (r) => `${r.x},${r.y} ${r.w}x${r.h}`;
-					return `    - **rect**: \`${f(v.ours)}\` → \`${f(v.ref)}\``;
-				}
-				return `    - **${k}**: \`${v.ours}\` → \`${v.ref}\``;
-			})
-			.join("\n");
+			const d = Object.entries(e.deltas)
+				.map(([k, v]) => {
+					if (k === "rect") {
+						const f = (r) => `${r.x},${r.y} ${r.w}x${r.h}`;
+						return `    - **rect**: \`${f(v.ours)}\` → \`${f(v.ref)}\``;
+					}
+					return `    - **${k}**: \`${v.ours}\` → \`${v.ref}\``;
+				})
+				.join("\n");
 			return `### \`${e.path}\`${e.text ? ` — "${e.text}"` : ""}\n${d}`;
 		})
 		.join("\n\n");
-	return `# Style audit: ${report.ours}\n\nvs ${report.ref}\n\n_${report.generatedAt}_\n\n` +
+	return (
+		`# Style audit: ${report.ours}\n\nvs ${report.ref}\n\n_${report.generatedAt}_\n\n` +
 		`## Сводка\n\n- Токены light: **${report.counts.tokenLight}** расх.\n` +
 		`- Токены dark: **${report.counts.tokenDark}** расх.\n` +
 		`- Элементы (стиль/геометрия): **${report.counts.elements}** расх.\n` +
@@ -259,10 +289,15 @@ function toMarkdown(report, ours, ref) {
 		`## Токены — Dark\n\n${tokTable(report.tokenDiffs.dark)}\n\n` +
 		`## Расхождения элементов (топ ${Math.min(100, sorted.length)})\n\n${elRows}\n\n` +
 		`## Только у нас (структурно)\n\n` +
-		(report.onlyOurs.length ? report.onlyOurs.map((p) => `- \`${p}\``).join("\n") : "_—_") +
+		(report.onlyOurs.length
+			? report.onlyOurs.map((p) => `- \`${p}\``).join("\n")
+			: "_—_") +
 		`\n\n## Только в рефе (структурно)\n\n` +
-		(report.onlyRef.length ? report.onlyRef.map((p) => `- \`${p}\``).join("\n") : "_—_") +
-		`\n`;
+		(report.onlyRef.length
+			? report.onlyRef.map((p) => `- \`${p}\``).join("\n")
+			: "_—_") +
+		`\n`
+	);
 }
 
 main().catch((e) => {

web/src/app.css

@@ -39,11 +39,12 @@
 	--control-max-width: 16rem;
 
 	--font-sans:
-		system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
-	--font-mono: ui-monospace, 'Cascadia Code', Consolas, monospace;
+		system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial,
+		sans-serif;
+	--font-mono: ui-monospace, "Cascadia Code", Consolas, monospace;
 }
 
-[data-theme='dark'] {
+[data-theme="dark"] {
 	color-scheme: dark;
 
 	--bg: #12151a;
@@ -150,7 +151,7 @@ select {
 	max-width: var(--control-max-width);
 }
 
-input.control[type='number'] {
+input.control[type="number"] {
 	font-family: var(--font-mono);
 	width: 100%;
 }

web/src/app.d.ts

@@ -10,7 +10,7 @@ declare global {
 	}
 }
 
-declare module '*.css?raw' {
+declare module "*.css?raw" {
 	const content: string;
 	export default content;
 }

web/src/app.html

@@ -7,16 +7,16 @@
 		<script>
 			(() => {
 				try {
-					const saved = localStorage.getItem('theme');
+					const saved = localStorage.getItem("theme");
 					const theme =
-						saved === 'dark' || saved === 'light'
+						saved === "dark" || saved === "light"
 							? saved
-							: matchMedia('(prefers-color-scheme: dark)').matches
-								? 'dark'
-								: 'light';
+							: matchMedia("(prefers-color-scheme: dark)").matches
+								? "dark"
+								: "light";
 					document.documentElement.dataset.theme = theme;
 				} catch {
-					document.documentElement.dataset.theme = 'light';
+					document.documentElement.dataset.theme = "light";
 				}
 			})();
 		</script>

web/src/lib/categories.ts

@@ -1,24 +1,24 @@
 export type CategoryId =
-	| 'convert'
-	| 'alpha'
-	| 'color'
-	| 'geometry'
-	| 'analyze'
-	| 'generate'
-	| 'filters'
-	| 'text';
+	| "convert"
+	| "alpha"
+	| "color"
+	| "geometry"
+	| "analyze"
+	| "generate"
+	| "filters"
+	| "text";
 
 /**
  * Порядок категорий в каталоге. Человекочитаемые названия живут в словарях
  * i18n: секция categories, ключ = CategoryId.
  */
 export const CATEGORIES: readonly CategoryId[] = [
-	'convert',
-	'alpha',
-	'color',
-	'geometry',
-	'filters',
-	'text',
-	'analyze',
-	'generate'
+	"convert",
+	"alpha",
+	"color",
+	"geometry",
+	"filters",
+	"text",
+	"analyze",
+	"generate",
 ];

web/src/lib/components/DownloadButton.svelte

@@ -1,9 +1,9 @@
 <script lang="ts">
-	import Button from './ui/Button.svelte';
-	import { downloadBlob, encode } from '$lib/core/io';
-	import type { PixelImage } from '$lib/core/types';
-	import type { OutputFormat } from '$lib/registry';
-	import { t } from '$lib/i18n/t';
+	import Button from "./ui/Button.svelte";
+	import { downloadBlob, encode } from "$lib/core/io";
+	import type { PixelImage } from "$lib/core/types";
+	import type { OutputFormat } from "$lib/registry";
+	import { t } from "$lib/i18n/t";
 
 	interface Props {
 		image: PixelImage | null;
@@ -21,9 +21,13 @@
 		if (!image || !format || busy) return;
 		busy = true;
 		try {
-			const raw = format.qualityParamId ? params[format.qualityParamId] : undefined;
+			const raw = format.qualityParamId
+				? params[format.qualityParamId]
+				: undefined;
 			const quality =
-				typeof raw === 'number' ? Math.min(Math.max(raw, 1), 100) / 100 : undefined;
+				typeof raw === "number"
+					? Math.min(Math.max(raw, 1), 100) / 100
+					: undefined;
 			const blob = await encode(image, format.mime, quality);
 			downloadBlob(blob, `${baseName}.${format.ext}`);
 		} catch (e) {
@@ -39,8 +43,8 @@
 	fullWidth
 	disabled={!image || !format}
 	{busy}
-	busyText={t('download.busy')}
+	busyText={t("download.busy")}
 	onclick={download}
 >
-	{t('download.file', { ext: format?.ext ?? 'png' })}
+	{t("download.file", { ext: format?.ext ?? "png" })}
 </Button>

web/src/lib/components/DropOverlay.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
-	import type { Snippet } from 'svelte';
-	import { isSupportedImage, unsupportedImageError } from '$lib/core/io';
-	import { t } from '$lib/i18n/t';
+	import type { Snippet } from "svelte";
+	import { isSupportedImage, unsupportedImageError } from "$lib/core/io";
+	import { t } from "$lib/i18n/t";
 
 	interface Props {
 		onFile: (file: File) => void;
@@ -13,8 +13,8 @@
 	let {
 		onFile,
 		onError,
-		label = t('dropZone.overlayDefault'),
-		children
+		label = t("dropZone.overlayDefault"),
+		children,
 	}: Props = $props();
 
 	let depth = $state(0);

web/src/lib/components/DropZone.svelte

@@ -1,6 +1,10 @@
 <script lang="ts">
-	import { ACCEPTED_IMAGE_TYPES, isSupportedImage, unsupportedImageError } from '$lib/core/io';
-	import { t } from '$lib/i18n/t';
+	import {
+		ACCEPTED_IMAGE_TYPES,
+		isSupportedImage,
+		unsupportedImageError,
+	} from "$lib/core/io";
+	import { t } from "$lib/i18n/t";
 
 	interface Props {
 		onFile: (file: File) => void;
@@ -8,7 +12,7 @@
 		label?: string;
 	}
 
-	let { onFile, onError, label = t('dropZone.pickDefault') }: Props = $props();
+	let { onFile, onError, label = t("dropZone.pickDefault") }: Props = $props();
 
 	let input = $state<HTMLInputElement | undefined>();
 	let depth = $state(0);
@@ -52,7 +56,7 @@
 	aria-label={label}
 	onclick={openPicker}
 	onkeydown={(e) => {
-		if (e.key === 'Enter' || e.key === ' ') {
+		if (e.key === "Enter" || e.key === " ") {
 			e.preventDefault();
 			openPicker();
 		}
@@ -78,7 +82,7 @@
 	onchange={() => {
 		accept(input?.files?.[0]);
 		if (input) {
-			input.value = '';
+			input.value = "";
 		}
 	}}
 />

web/src/lib/components/InfoPanel.svelte

@@ -1,8 +1,8 @@
 <script lang="ts">
-	import type { ImageInfo } from '$lib/core/analyze';
-	import { LOCALE_TAGS } from '$lib/i18n/dict';
-	import { getLocale } from '$lib/i18n/locale.svelte';
-	import { t } from '$lib/i18n/t';
+	import type { ImageInfo } from "$lib/core/analyze";
+	import { LOCALE_TAGS } from "$lib/i18n/dict";
+	import { getLocale } from "$lib/i18n/locale.svelte";
+	import { t } from "$lib/i18n/t";
 
 	interface Props {
 		info: ImageInfo | null;
@@ -14,15 +14,17 @@
 {#if info}
 	<dl>
 		<div class="panel">
-			<dt>{t('infoPanel.dimensions')}</dt>
+			<dt>{t("infoPanel.dimensions")}</dt>
 			<dd>{info.width} × {info.height} px</dd>
 		</div>
 		<div class="panel">
-			<dt>{t('infoPanel.alpha')}</dt>
-			<dd>{info.hasAlpha ? t('infoPanel.alphaYes') : t('infoPanel.alphaNo')}</dd>
+			<dt>{t("infoPanel.alpha")}</dt>
+			<dd>
+				{info.hasAlpha ? t("infoPanel.alphaYes") : t("infoPanel.alphaNo")}
+			</dd>
 		</div>
 		<div class="panel">
-			<dt>{t('infoPanel.colorCount')}</dt>
+			<dt>{t("infoPanel.colorCount")}</dt>
 			<dd>{info.colorCount.toLocaleString(LOCALE_TAGS[getLocale()])}</dd>
 		</div>
 	</dl>

web/src/lib/components/ParamForm.svelte

@@ -1,12 +1,12 @@
 <script lang="ts">
-	import CheckboxField from './ui/CheckboxField.svelte';
-	import ColorField from './ui/ColorField.svelte';
-	import SelectField from './ui/SelectField.svelte';
-	import SliderField from './ui/SliderField.svelte';
-	import TextField from './ui/TextField.svelte';
-	import type { ParamDef, ToolEntry } from '$lib/registry';
-	import { optionLabel, paramLabel } from '$lib/i18n/tool-strings';
-	import { t } from '$lib/i18n/t';
+	import CheckboxField from "./ui/CheckboxField.svelte";
+	import ColorField from "./ui/ColorField.svelte";
+	import SelectField from "./ui/SelectField.svelte";
+	import SliderField from "./ui/SliderField.svelte";
+	import TextField from "./ui/TextField.svelte";
+	import type { ParamDef, ToolEntry } from "$lib/registry";
+	import { optionLabel, paramLabel } from "$lib/i18n/tool-strings";
+	import { t } from "$lib/i18n/t";
 
 	interface Props {
 		tool: ToolEntry;
@@ -25,19 +25,27 @@
 		pipetteTargetId = null,
 		onPipetteToggle,
 		hasMask = false,
-		showMask = $bindable(false)
+		showMask = $bindable(false),
 	}: Props = $props();
 </script>
 
 <div class="params-grid">
 	{#if hasMask}
-		<CheckboxField id="show-mask" label={t('ui.showMask')} bind:checked={showMask} />
+		<CheckboxField
+			id="show-mask"
+			label={t("ui.showMask")}
+			bind:checked={showMask}
+		/>
 	{/if}
 	{#each params as param (param.id)}
 		<div class="field">
-			{#if param.type === 'checkbox'}
-				<CheckboxField id={param.id} label={paramLabel(tool, param)} bind:checked={values[param.id]} />
-			{:else if param.type === 'number'}
+			{#if param.type === "checkbox"}
+				<CheckboxField
+					id={param.id}
+					label={paramLabel(tool, param)}
+					bind:checked={values[param.id]}
+				/>
+			{:else if param.type === "number"}
 				<TextField
 					id={param.id}
 					label={paramLabel(tool, param)}
@@ -47,7 +55,7 @@
 					step={param.step}
 					bind:value={values[param.id]}
 				/>
-			{:else if param.type === 'slider'}
+			{:else if param.type === "slider"}
 				<SliderField
 					id={param.id}
 					label={paramLabel(tool, param)}
@@ -57,17 +65,17 @@
 					default={param.default}
 					bind:value={values[param.id]}
 				/>
-			{:else if param.type === 'select'}
+			{:else if param.type === "select"}
 				<SelectField
 					id={param.id}
 					label={paramLabel(tool, param)}
 					options={param.options.map((o) => ({
 						value: o.value,
-						label: optionLabel(tool, param, o.value)
+						label: optionLabel(tool, param, o.value),
 					}))}
 					bind:value={values[param.id]}
 				/>
-			{:else if param.type === 'color'}
+			{:else if param.type === "color"}
 				<ColorField
 					id={param.id}
 					label={paramLabel(tool, param)}
@@ -75,7 +83,7 @@
 					pipetteActive={pipetteTargetId === param.id}
 					onPipetteToggle={() => onPipetteToggle?.(param.id)}
 				/>
-			{:else if param.type === 'text'}
+			{:else if param.type === "text"}
 				<TextField
 					id={param.id}
 					label={paramLabel(tool, param)}

web/src/lib/components/Preview.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
-	import { rgbToHex } from '$lib/core/color';
-	import type { PixelImage } from '$lib/core/types';
-	import PipetteLoupe from './tool/PipetteLoupe.svelte';
+	import { rgbToHex } from "$lib/core/color";
+	import type { PixelImage } from "$lib/core/types";
+	import PipetteLoupe from "./tool/PipetteLoupe.svelte";
 
 	interface Props {
 		image: PixelImage | null;
@@ -12,27 +12,42 @@
 	let { image, pipetteActive = false, onPickColor }: Props = $props();
 
 	let canvas = $state<HTMLCanvasElement | undefined>();
-	let hover = $state<{ clientX: number; clientY: number; px: number; py: number; hex: string } | null>(
-		null
-	);
+	let hover = $state<{
+		clientX: number;
+		clientY: number;
+		px: number;
+		py: number;
+		hex: string;
+	} | null>(null);
 
 	$effect(() => {
 		if (!canvas || !image) return;
 		canvas.width = image.width;
 		canvas.height = image.height;
-		const ctx = canvas.getContext('2d');
+		const ctx = canvas.getContext("2d");
 		if (!ctx) return;
-		ctx.putImageData(new ImageData(image.data, image.width, image.height), 0, 0);
+		ctx.putImageData(
+			new ImageData(image.data, image.width, image.height),
+			0,
+			0,
+		);
 	});
 
-	function pixelAt(event: MouseEvent): { px: number; py: number; hex: string } | null {
+	function pixelAt(
+		event: MouseEvent,
+	): { px: number; py: number; hex: string } | null {
 		if (!canvas || !image) return null;
 		const rect = canvas.getBoundingClientRect();
 		if (rect.width === 0 || rect.height === 0) return null;
-		const px = Math.floor((event.clientX - rect.left) * (canvas.width / rect.width));
-		const py = Math.floor((event.clientY - rect.top) * (canvas.height / rect.height));
-		if (px < 0 || py < 0 || px >= canvas.width || py >= canvas.height) return null;
-		const ctx = canvas.getContext('2d');
+		const px = Math.floor(
+			(event.clientX - rect.left) * (canvas.width / rect.width),
+		);
+		const py = Math.floor(
+			(event.clientY - rect.top) * (canvas.height / rect.height),
+		);
+		if (px < 0 || py < 0 || px >= canvas.width || py >= canvas.height)
+			return null;
+		const ctx = canvas.getContext("2d");
 		if (!ctx) return null;
 		const [r, g, b] = ctx.getImageData(px, py, 1, 1).data;
 		return { px, py, hex: rgbToHex(r, g, b) };
@@ -53,7 +68,13 @@
 		}
 		const pixel = pixelAt(event);
 		hover = pixel
-			? { clientX: event.clientX, clientY: event.clientY, px: pixel.px, py: pixel.py, hex: pixel.hex }
+			? {
+					clientX: event.clientX,
+					clientY: event.clientY,
+					px: pixel.px,
+					py: pixel.py,
+					hex: pixel.hex,
+				}
 			: null;
 	}
 
@@ -90,8 +111,10 @@
 		display: block;
 		max-width: 100%;
 		max-height: 32rem;
-		background:
-			repeating-conic-gradient(var(--check-a) 0% 25%, var(--check-b) 0% 50%);
+		background: repeating-conic-gradient(
+			var(--check-a) 0% 25%,
+			var(--check-b) 0% 50%
+		);
 		background-size: 16px 16px;
 		border: 1px solid var(--border);
 	}

web/src/lib/components/ToolPage.svelte

@@ -1,60 +1,81 @@
 <script lang="ts">
-	import { imageInfo, type ImageInfo } from '$lib/core/analyze';
-	import { ToolError } from '$lib/core/errors';
-	import { decodeFile, isSupportedImage, unsupportedImageError } from '$lib/core/io';
-	import type { PixelImage } from '$lib/core/types';
-	import { defaultParams, getTool, outputOf, sanitizeParams, type ToolEntry } from '$lib/registry';
-	import { loadStoredSteps, newStepId, saveSteps, type PipelineStep } from '$lib/tools/pipeline';
-	import { TOOL_ICONS } from '$lib/tools/tool-icons';
-	import DownloadButton from './DownloadButton.svelte';
-	import ParamForm from './ParamForm.svelte';
-	import Preview from './Preview.svelte';
-	import ToolSearch from './search/ToolSearch.svelte';
-	import { createAutoRunner } from '$lib/tools/auto-run';
-	import { executeStep } from '$lib/tools/executor';
-	import { clearOverlay, setOverlay } from '$lib/tools/overlay-store.svelte';
-	import { t } from '$lib/i18n/t';
-	import { toolDescription, toolTitle } from '$lib/i18n/tool-strings';
-	import type { StageStatus } from './stage/stage-props';
-	import ChainToolBlock from './chain/ChainToolBlock.svelte';
-	import ToolStage from './stage/ToolStage.svelte';
-	import ToolStageClassic from './stage/ToolStageClassic.svelte';
+	import { imageInfo, type ImageInfo } from "$lib/core/analyze";
+	import { ToolError } from "$lib/core/errors";
+	import {
+		decodeFile,
+		isSupportedImage,
+		unsupportedImageError,
+	} from "$lib/core/io";
+	import type { PixelImage } from "$lib/core/types";
+	import {
+		defaultParams,
+		getTool,
+		outputOf,
+		sanitizeParams,
+		type ToolEntry,
+	} from "$lib/registry";
+	import {
+		loadStoredSteps,
+		newStepId,
+		saveSteps,
+		type PipelineStep,
+	} from "$lib/tools/pipeline";
+	import { TOOL_ICONS } from "$lib/tools/tool-icons";
+	import DownloadButton from "./DownloadButton.svelte";
+	import ParamForm from "./ParamForm.svelte";
+	import Preview from "./Preview.svelte";
+	import ToolSearch from "./search/ToolSearch.svelte";
+	import { createAutoRunner } from "$lib/tools/auto-run";
+	import { executeStep } from "$lib/tools/executor";
+	import { clearOverlay, setOverlay } from "$lib/tools/overlay-store.svelte";
+	import { t } from "$lib/i18n/t";
+	import { toolDescription, toolTitle } from "$lib/i18n/tool-strings";
+	import type { StageStatus } from "./stage/stage-props";
+	import ChainToolBlock from "./chain/ChainToolBlock.svelte";
+	import ToolStage from "./stage/ToolStage.svelte";
+	import ToolStageClassic from "./stage/ToolStageClassic.svelte";
 
 	export type PresetStep = { toolId: string; values?: Record<string, unknown> };
 
 	let {
 		tool,
 		restoreChain = false,
-		stageVariant = 'inline',
+		stageVariant = "inline",
 		presetBaseValues,
-		presetChain
+		presetChain,
 	}: {
 		tool: ToolEntry;
 		restoreChain?: boolean;
-		stageVariant?: 'classic' | 'inline';
+		stageVariant?: "classic" | "inline";
 		presetBaseValues?: Record<string, unknown>;
 		presetChain?: PresetStep[];
 	} = $props();
 
-	const StageComponent = $derived(stageVariant === 'classic' ? ToolStageClassic : ToolStage);
+	const StageComponent = $derived(
+		stageVariant === "classic" ? ToolStageClassic : ToolStage,
+	);
 
 	type Status = StageStatus;
 
 	const isPreset = $derived(
-		(presetChain?.length ?? 0) > 0 || Object.keys(presetBaseValues ?? {}).length > 0
+		(presetChain?.length ?? 0) > 0 ||
+			Object.keys(presetBaseValues ?? {}).length > 0,
 	);
 
-	let status = $state<Status>('idle');
+	let status = $state<Status>("idle");
 	let source = $state<PixelImage | null>(null);
 	let result = $state<PixelImage | null>(null);
 	let previewResult = $state<PixelImage | null>(null);
 	let textResult = $state<string | null>(null);
 	let showMask = $state(false);
 	let info = $state<ImageInfo | null>(null);
-	let errorText = $state('');
+	let errorText = $state("");
 	let overlayImage = $state<PixelImage | null>(null);
 	// svelte-ignore state_referenced_locally
-	let values = $state<Record<string, any>>({ ...defaultParams(tool), ...presetBaseValues });
+	let values = $state<Record<string, any>>({
+		...defaultParams(tool),
+		...presetBaseValues,
+	});
 	// svelte-ignore state_referenced_locally
 	let chain = $state<PipelineStep[]>(
 		restoreChain
@@ -66,28 +87,30 @@
 								{
 									id: newStepId(),
 									toolId: preset.toolId,
-									values: { ...defaultParams(stepTool), ...preset.values }
-								}
+									values: { ...defaultParams(stepTool), ...preset.values },
+								},
 							]
 						: [];
-				})
+				}),
 	);
 	let chainResults = $state<(PixelImage | null)[]>([]);
-	let lastRunChainJson = '';
+	let lastRunChainJson = "";
 
-	const isInfo = $derived(tool.resultType === 'info');
-	const isSourceless = $derived(tool.sourceMode === 'none');
-	const isTextSource = $derived(tool.sourceMode === 'text');
+	const isInfo = $derived(tool.resultType === "info");
+	const isSourceless = $derived(tool.sourceMode === "none");
+	const isTextSource = $derived(tool.sourceMode === "text");
 	const sanitized = $derived(sanitizeParams(tool, values));
 	const canChainBase = $derived(
-		(tool.resultType ?? 'image') === 'image' && tool.sourceMode !== 'text'
+		(tool.resultType ?? "image") === "image" && tool.sourceMode !== "text",
 	);
-	const hasMask = $derived(typeof tool.preview === 'function');
-	const shownBase = $derived(showMask && previewResult ? previewResult : result);
-	const hasFilledSteps = $derived(chain.some((step) => step.toolId !== ''));
+	const hasMask = $derived(typeof tool.preview === "function");
+	const shownBase = $derived(
+		showMask && previewResult ? previewResult : result,
+	);
+	const hasFilledSteps = $derived(chain.some((step) => step.toolId !== ""));
 
 	function addChainStep() {
-		chain.push({ id: newStepId(), toolId: '', values: {} });
+		chain.push({ id: newStepId(), toolId: "", values: {} });
 	}
 
 	function removeChainStep(index: number) {
@@ -118,7 +141,7 @@
 	const runner = createAutoRunner();
 	let hasLastRun = false;
 	let lastRunSource: PixelImage | null = null;
-	let lastRunValuesJson = '';
+	let lastRunValuesJson = "";
 	let pipetteTargetId = $state<string | null>(null);
 
 	function handlePipetteToggle(id: string) {
@@ -132,8 +155,8 @@
 	}
 
 	async function handleFile(file: File) {
-		errorText = '';
-		status = 'processing';
+		errorText = "";
+		status = "processing";
 		try {
 			source = await decodeFile(file);
 			values = defaultParams(tool);
@@ -143,7 +166,7 @@
 			pipetteTargetId = null;
 			info = isInfo ? imageInfo(source) : null;
 			if (isInfo) {
-				status = 'loaded';
+				status = "loaded";
 			} else {
 				await runTool();
 			}
@@ -154,15 +177,15 @@
 
 	async function handleTextSubmit(text: string) {
 		if (!isTextSource) return;
-		errorText = '';
-		status = 'processing';
+		errorText = "";
+		status = "processing";
 		if (tool.textToText) {
 			try {
 				result = null;
 				previewResult = null;
 				info = null;
 				textResult = await tool.textToText(text);
-				status = 'loaded';
+				status = "loaded";
 			} catch (e) {
 				showError(e);
 			}
@@ -196,7 +219,7 @@
 			let next: PixelImage | null = null;
 			let nextText: string | null = null;
 
-			if (tool.resultType === 'text') {
+			if (tool.resultType === "text") {
 				nextText = await tool.toText!(source!, sanitized);
 			} else if (isSourceless) {
 				next = await tool.generate!(sanitized);
@@ -221,23 +244,31 @@
 			let current: PixelImage | null = next ?? source;
 			for (let i = 0; i < chain.length; i++) {
 				const step = chain[i];
-				const stepTool = step.toolId === '' ? undefined : getTool(step.toolId);
+				const stepTool = step.toolId === "" ? undefined : getTool(step.toolId);
 				if (!current || !stepTool?.run) {
 					collected.push(null);
 					continue;
 				}
 				try {
-					current = await executeStep(stepTool, current, sanitizeParams(stepTool, step.values));
+					current = await executeStep(
+						stepTool,
+						current,
+						sanitizeParams(stepTool, step.values),
+					);
 				} catch (e) {
 					throw new Error(
-						t('toolPage.stepError', { n: i + 2, title: toolTitle(stepTool), msg: errorMessage(e) })
+						t("toolPage.stepError", {
+							n: i + 2,
+							title: toolTitle(stepTool),
+							msg: errorMessage(e),
+						}),
 					);
 				}
 				if (!runner.isCurrent(token)) return;
 				collected.push(current);
 			}
 			chainResults = collected;
-			status = 'loaded';
+			status = "loaded";
 		} catch (e) {
 			if (!runner.isCurrent(token)) return;
 			showError(e);
@@ -262,7 +293,7 @@
 
 	$effect(() => {
 		if (isPreset) return;
-		const filled = chain.filter((step) => step.toolId !== '');
+		const filled = chain.filter((step) => step.toolId !== "");
 		if (filled.length === 0 && !hasLastRun) return;
 		saveSteps(filled);
 	});
@@ -273,7 +304,7 @@
 	}
 
 	function showError(e: unknown) {
-		status = source ? 'loaded' : 'idle';
+		status = source ? "loaded" : "idle";
 		errorText = errorMessage(e);
 	}
 
@@ -285,8 +316,8 @@
 		showMask = false;
 		pipetteTargetId = null;
 		info = null;
-		errorText = '';
-		status = 'idle';
+		errorText = "";
+		status = "idle";
 		clearOverlay();
 		values = { ...defaultParams(tool), ...presetBaseValues };
 	}
@@ -303,7 +334,7 @@
 		const items = event.clipboardData?.items;
 		if (!items) return;
 		for (const item of items) {
-			if (!item.type.startsWith('image/')) continue;
+			if (!item.type.startsWith("image/")) continue;
 			const file = item.getAsFile();
 			if (file) {
 				event.preventDefault();
@@ -331,32 +362,32 @@
 	<StageComponent
 		mode="base"
 		{tool}
-		source={source}
-		result={result}
+		{source}
+		{result}
 		displayImage={shownBase}
-		info={info}
-		status={status}
-		isInfo={isInfo}
-		isSourceless={isSourceless}
-		isTextSource={isTextSource}
-		textResult={textResult}
-		sanitized={sanitized}
-		canChainBase={canChainBase}
+		{info}
+		{status}
+		{isInfo}
+		{isSourceless}
+		{isTextSource}
+		{textResult}
+		{sanitized}
+		{canChainBase}
 		hasChain={chain.length > 0}
-		hasMask={hasMask}
+		{hasMask}
 		bind:showMask
 		bind:values
-		pipetteTargetId={pipetteTargetId}
-		handleFile={handleFile}
+		{pipetteTargetId}
+		{handleFile}
 		onTextSubmit={handleTextSubmit}
 		onSourceError={(e) => (errorText = errorMessage(e))}
-		reset={reset}
-		toggleChain={toggleChain}
-		handlePipetteToggle={handlePipetteToggle}
-		handlePickColor={handlePickColor}
-		showError={showError}
-		errorMessage={errorMessage}
-		overlayImage={overlayImage}
+		{reset}
+		{toggleChain}
+		{handlePipetteToggle}
+		{handlePickColor}
+		{showError}
+		{errorMessage}
+		{overlayImage}
 		onOverlayFile={(f) => void handleOverlayFile(f)}
 		onOverlayError={(e) => (errorText = errorMessage(e))}
 		onOverlayClear={clearOverlay}
@@ -364,33 +395,38 @@
 
 	<div class="chain-stack">
 		{#each chain as step, index (step.id)}
-			{#if step.toolId === ''}
+			{#if step.toolId === ""}
 				<div class="panel empty-slot">
-				<header>
-					<h3 class="heading-section">{t('toolPage.stepHeading', { n: index + 2 })}</h3>
-					<button
-						type="button"
-						class="remove-step"
-						aria-label={t('toolPage.removeStepAria')}
-						onclick={() => removeChainStep(index)}
-					>
-						✕
-					</button>
-				</header>
-					<ToolSearch onSelect={(id) => applyChainTool(index, id)} chainableOnly />
+					<header>
+						<h3 class="heading-section">
+							{t("toolPage.stepHeading", { n: index + 2 })}
+						</h3>
+						<button
+							type="button"
+							class="remove-step"
+							aria-label={t("toolPage.removeStepAria")}
+							onclick={() => removeChainStep(index)}
+						>
+							✕
+						</button>
+					</header>
+					<ToolSearch
+						onSelect={(id) => applyChainTool(index, id)}
+						chainableOnly
+					/>
 				</div>
 			{:else if getTool(step.toolId)}
 				{@const stepTool = getTool(step.toolId)!}
-				{#if stageVariant === 'inline'}
+				{#if stageVariant === "inline"}
 					{@const StepIcon = TOOL_ICONS[stepTool.id]}
 					<ToolStage
 						mode="chain"
-						index={index}
+						{index}
 						tool={stepTool}
 						bind:values={step.values}
 						input={index === 0 ? result : (chainResults[index - 1] ?? null)}
 						result={chainResults[index] ?? null}
-						busy={status === 'processing'}
+						busy={status === "processing"}
 						isLast={index === chain.length - 1}
 						onRemove={() => removeChainStep(index)}
 						onError={showError}
@@ -404,12 +440,15 @@
 										<StepIcon size={14} strokeWidth={2} />
 									</span>
 								{/if}
-								{t('chain.stepLabel', { n: index + 2, title: toolTitle(stepTool) })}
+								{t("chain.stepLabel", {
+									n: index + 2,
+									title: toolTitle(stepTool),
+								})}
 								<button
 									type="button"
 									class="remove-step"
-									aria-label={t('toolPage.removeStepAria')}
-									title={t('toolPage.removeStepAria')}
+									aria-label={t("toolPage.removeStepAria")}
+									title={t("toolPage.removeStepAria")}
 									onclick={() => removeChainStep(index)}
 								>
 									✕
@@ -419,12 +458,12 @@
 					</ToolStage>
 				{:else}
 					<ChainToolBlock
-						index={index}
+						{index}
 						tool={stepTool}
 						bind:values={step.values}
 						input={index === 0 ? result : (chainResults[index - 1] ?? null)}
 						result={chainResults[index] ?? null}
-						busy={status === 'processing'}
+						busy={status === "processing"}
 						isLast={index === chain.length - 1}
 						onRemove={() => removeChainStep(index)}
 						onError={showError}

web/src/lib/components/chain/ChainToolBlock.svelte

@@ -1,14 +1,14 @@
 <script lang="ts">
-	import { outputOf, sanitizeParams, type ToolEntry } from '$lib/registry';
-	import type { PixelImage } from '$lib/core/types';
-	import { t } from '$lib/i18n/t';
-	import { toolTitle } from '$lib/i18n/tool-strings';
-	import DownloadButton from '../DownloadButton.svelte';
-	import Button from '../ui/Button.svelte';
-	import EmptyState from '../ui/EmptyState.svelte';
-	import ParamsCard from '../tool/ParamsCard.svelte';
-	import Preview from '../Preview.svelte';
-	import { TOOL_ICONS } from '$lib/tools/tool-icons';
+	import { outputOf, sanitizeParams, type ToolEntry } from "$lib/registry";
+	import type { PixelImage } from "$lib/core/types";
+	import { t } from "$lib/i18n/t";
+	import { toolTitle } from "$lib/i18n/tool-strings";
+	import DownloadButton from "../DownloadButton.svelte";
+	import Button from "../ui/Button.svelte";
+	import EmptyState from "../ui/EmptyState.svelte";
+	import ParamsCard from "../tool/ParamsCard.svelte";
+	import Preview from "../Preview.svelte";
+	import { TOOL_ICONS } from "$lib/tools/tool-icons";
 
 	interface Props {
 		index: number;
@@ -35,7 +35,7 @@
 		onRemove,
 		onError,
 		onAddStep,
-		onRemoveChain
+		onRemoveChain,
 	}: Props = $props();
 
 	const format = $derived(outputOf(tool));
@@ -47,14 +47,16 @@
 	<div class="panel tool-stage">
 		<span class="edge-legend step-legend">
 			{#if StepIcon}
-				<span class="step-icon" aria-hidden="true"><StepIcon size={14} strokeWidth={2} /></span>
+				<span class="step-icon" aria-hidden="true"
+					><StepIcon size={14} strokeWidth={2} /></span
+				>
 			{/if}
-			{t('chain.stepLabel', { n: index + 2, title: toolTitle(tool) })}
+			{t("chain.stepLabel", { n: index + 2, title: toolTitle(tool) })}
 			<button
 				type="button"
 				class="remove"
-				aria-label={t('chain.removeStepAria')}
-				title={t('chain.removeStepAria')}
+				aria-label={t("chain.removeStepAria")}
+				title={t("chain.removeStepAria")}
 				onclick={onRemove}
 			>
 				✕
@@ -62,34 +64,44 @@
 		</span>
 
 		<div class="cell">
-			<span class="edge-legend cell-legend" aria-hidden="true">{t('chain.inputLegend')}</span>
+			<span class="edge-legend cell-legend" aria-hidden="true"
+				>{t("chain.inputLegend")}</span
+			>
 			<div class="cell-media">
 				<Preview image={input} />
 			</div>
 		</div>
 		<div class="cell">
-			<span class="edge-legend cell-legend" aria-hidden="true">{t('chain.resultLegend')}</span>
+			<span class="edge-legend cell-legend" aria-hidden="true"
+				>{t("chain.resultLegend")}</span
+			>
 			{#if busy && !result}
 				<div class="cell-media">
-					<EmptyState title={t('chain.busyTitle')} hint={t('chain.busyHint')} />
+					<EmptyState title={t("chain.busyTitle")} hint={t("chain.busyHint")} />
 				</div>
 			{:else}
 				<div class="cell-media">
 					<Preview image={result} />
 					{#if busy}
-						<span class="recalc" aria-live="polite">{t('resultCard.recalc')}</span>
+						<span class="recalc" aria-live="polite"
+							>{t("resultCard.recalc")}</span
+						>
 					{/if}
 				</div>
 				<div class="actions-row">
 					<DownloadButton
 						image={result}
-						format={format}
+						{format}
 						baseName="{index + 2}-{tool.id}"
 						params={safeParams}
 						{onError}
 					/>
-					<Button variant="secondary" fullWidth onclick={isLast ? onAddStep : onRemoveChain}>
-						{isLast ? t('resultCard.nextTool') : t('resultCard.breakChain')}
+					<Button
+						variant="secondary"
+						fullWidth
+						onclick={isLast ? onAddStep : onRemoveChain}
+					>
+						{isLast ? t("resultCard.nextTool") : t("resultCard.breakChain")}
 					</Button>
 				</div>
 			{/if}
@@ -98,9 +110,11 @@
 
 	{#if tool.params.length > 0}
 		<div class="params-sep">
-			<span class="edge-legend" aria-hidden="true">{t('chain.paramsLegend')}</span>
+			<span class="edge-legend" aria-hidden="true"
+				>{t("chain.paramsLegend")}</span
+			>
 		</div>
-		<ParamsCard tool={tool} params={tool.params} bind:values />
+		<ParamsCard {tool} params={tool.params} bind:values />
 	{/if}
 </div>
 

web/src/lib/components/kit/TopBar.svelte

@@ -22,7 +22,12 @@
 	</div>
 	<div class="top-actions">
 		<span class="status"><StatusDot /> AUTO PIPELINE</span>
-		<IconButton icon={CircleHelp} label="Help" variant="bare" onclick={() => {}} />
+		<IconButton
+			icon={CircleHelp}
+			label="Help"
+			variant="bare"
+			onclick={() => {}}
+		/>
 		<IconButton
 			icon={theme === "light" ? Moon : Sun}
 			label="Toggle theme"

web/src/lib/components/search/ToolCard.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-	import { TOOL_ICONS } from '$lib/tools/tool-icons';
+	import { TOOL_ICONS } from "$lib/tools/tool-icons";
 
 	interface Props {
 		toolId: string;
@@ -18,7 +18,7 @@
 		selected = false,
 		href,
 		onActivate,
-		onHover
+		onHover,
 	}: Props = $props();
 
 	const Icon = $derived(TOOL_ICONS[toolId]);
@@ -35,12 +35,7 @@
 {/snippet}
 
 {#if href}
-	<a
-		{href}
-		class="card"
-		class:selected
-		onmousemove={onHover}
-	>
+	<a {href} class="card" class:selected onmousemove={onHover}>
 		{@render content()}
 	</a>
 {:else}
@@ -53,7 +48,7 @@
 		onclick={onActivate}
 		onmousemove={onHover}
 		onkeydown={(e) => {
-			if (e.key === 'Enter') onActivate?.();
+			if (e.key === "Enter") onActivate?.();
 		}}
 	>
 		{@render content()}

web/src/lib/components/search/ToolSearch.svelte

@@ -1,11 +1,15 @@
 <script lang="ts">
-	import { isChainable, TOOLS } from '$lib/registry';
-	import { LOCALE_TAGS } from '$lib/i18n/dict';
-	import { getLocale } from '$lib/i18n/locale.svelte';
-	import { normalizeForSearch, scoreDoc } from '$lib/i18n/matching';
-	import { t } from '$lib/i18n/t';
-	import { toolDescription, toolSearchDoc, toolTitle } from '$lib/i18n/tool-strings';
-	import ToolCard from './ToolCard.svelte';
+	import { isChainable, TOOLS } from "$lib/registry";
+	import { LOCALE_TAGS } from "$lib/i18n/dict";
+	import { getLocale } from "$lib/i18n/locale.svelte";
+	import { normalizeForSearch, scoreDoc } from "$lib/i18n/matching";
+	import { t } from "$lib/i18n/t";
+	import {
+		toolDescription,
+		toolSearchDoc,
+		toolTitle,
+	} from "$lib/i18n/tool-strings";
+	import ToolCard from "./ToolCard.svelte";
 
 	interface Props {
 		onSelect: (toolId: string) => void;
@@ -15,9 +19,11 @@
 
 	let { onSelect, chainableOnly = false }: Props = $props();
 
-	const candidates = $derived(chainableOnly ? TOOLS.filter(isChainable) : TOOLS);
+	const candidates = $derived(
+		chainableOnly ? TOOLS.filter(isChainable) : TOOLS,
+	);
 
-	let query = $state('');
+	let query = $state("");
 	let activeIndex = $state(0);
 	let listOpen = $state(false);
 
@@ -40,7 +46,7 @@
 					title: toolTitle(tool),
 					description: toolDescription(tool),
 					popularity: tool.popularity ?? 50,
-					score: s
+					score: s,
 				});
 			}
 		}
@@ -49,31 +55,31 @@
 			(a, b) =>
 				b.score - a.score ||
 				b.popularity - a.popularity ||
-				collator.compare(a.title, b.title)
+				collator.compare(a.title, b.title),
 		);
 		return found.slice(0, 12);
 	});
 
 	function choose(id: string) {
 		listOpen = false;
-		query = '';
+		query = "";
 		activeIndex = 0;
 		onSelect(id);
 	}
 
 	function onKeydown(event: KeyboardEvent) {
 		if (!listOpen || matches.length === 0) return;
-		if (event.key === 'ArrowDown') {
+		if (event.key === "ArrowDown") {
 			event.preventDefault();
 			activeIndex = (activeIndex + 1) % matches.length;
-		} else if (event.key === 'ArrowUp') {
+		} else if (event.key === "ArrowUp") {
 			event.preventDefault();
 			activeIndex = (activeIndex - 1 + matches.length) % matches.length;
-		} else if (event.key === 'Enter') {
+		} else if (event.key === "Enter") {
 			event.preventDefault();
 			const match = matches[Math.min(activeIndex, matches.length - 1)];
 			if (match) choose(match.id);
-		} else if (event.key === 'Escape') {
+		} else if (event.key === "Escape") {
 			listOpen = false;
 		}
 	}
@@ -89,14 +95,14 @@
 			activeIndex = 0;
 		}}
 		onkeydown={onKeydown}
-		placeholder={t('search.placeholder')}
-		aria-label={t('search.aria')}
+		placeholder={t("search.placeholder")}
+		aria-label={t("search.aria")}
 		role="combobox"
 		aria-expanded={listOpen}
 		aria-controls="tool-search-list"
 	/>
 	{#if listOpen && query.trim().length > 0 && matches.length === 0}
-		<p class="none text-muted">{t('search.nothingFound')}</p>
+		<p class="none text-muted">{t("search.nothingFound")}</p>
 	{:else if listOpen && matches.length > 0}
 		<div id="tool-search-list" class="cards" role="listbox">
 			{#each matches as match, index (match.id)}

web/src/lib/components/stage/ToolStage.svelte

@@ -1,24 +1,24 @@
 <script lang="ts">
-	import type { Snippet } from 'svelte';
-	import { outputOf, sanitizeParams, type ToolEntry } from '$lib/registry';
-	import type { ImageInfo } from '$lib/core/analyze';
-	import type { PixelImage } from '$lib/core/types';
-	import { t } from '$lib/i18n/t';
-	import { toolTitle } from '$lib/i18n/tool-strings';
-	import { TOOL_ICONS } from '$lib/tools/tool-icons';
-	import DownloadButton from '../DownloadButton.svelte';
-	import Button from '../ui/Button.svelte';
-	import EmptyState from '../ui/EmptyState.svelte';
-	import OverlayCard from '../tool/OverlayCard.svelte';
-	import ParamsCard from '../tool/ParamsCard.svelte';
-	import ResultCard from '../tool/ResultCard.svelte';
-	import SourceCard from '../tool/SourceCard.svelte';
-	import TextInputCard from '../tool/TextInputCard.svelte';
-	import Preview from '../Preview.svelte';
-	import type { StageStatus } from './stage-props';
+	import type { Snippet } from "svelte";
+	import { outputOf, sanitizeParams, type ToolEntry } from "$lib/registry";
+	import type { ImageInfo } from "$lib/core/analyze";
+	import type { PixelImage } from "$lib/core/types";
+	import { t } from "$lib/i18n/t";
+	import { toolTitle } from "$lib/i18n/tool-strings";
+	import { TOOL_ICONS } from "$lib/tools/tool-icons";
+	import DownloadButton from "../DownloadButton.svelte";
+	import Button from "../ui/Button.svelte";
+	import EmptyState from "../ui/EmptyState.svelte";
+	import OverlayCard from "../tool/OverlayCard.svelte";
+	import ParamsCard from "../tool/ParamsCard.svelte";
+	import ResultCard from "../tool/ResultCard.svelte";
+	import SourceCard from "../tool/SourceCard.svelte";
+	import TextInputCard from "../tool/TextInputCard.svelte";
+	import Preview from "../Preview.svelte";
+	import type { StageStatus } from "./stage-props";
 
 	interface Props {
-		mode: 'base' | 'chain';
+		mode: "base" | "chain";
 		header?: Snippet;
 		tool: ToolEntry;
 		source?: PixelImage | null;
@@ -66,7 +66,7 @@
 		source = null,
 		displayImage = null,
 		info = null,
-		status = 'idle',
+		status = "idle",
 		isInfo = false,
 		isSourceless = false,
 		isTextSource = false,
@@ -98,43 +98,59 @@
 		onRemove,
 		onError,
 		onAddStep,
-		onRemoveChain
+		onRemoveChain,
 	}: Props = $props();
 
-	const isChain = $derived(mode === 'chain');
+	const isChain = $derived(mode === "chain");
 	const format = $derived(outputOf(tool));
 	const safeParams = $derived(sanitizeParams(tool, values ?? {}));
 	const StepIcon = $derived(TOOL_ICONS[tool.id]);
 	const showParams = $derived(
-		mode === 'chain'
+		mode === "chain"
 			? tool.params.length > 0
 			: (source !== null || isSourceless) &&
-				!isInfo &&
-				(tool.params.length > 0 || hasMask)
+					!isInfo &&
+					(tool.params.length > 0 || hasMask),
 	);
 
-	const leftLegend = $derived(isChain ? t('chain.inputLegend') : t('toolPage.legendSource'));
-	const midLegend = $derived(isChain ? t('chain.paramsLegend') : t('toolPage.legendParams'));
+	const leftLegend = $derived(
+		isChain ? t("chain.inputLegend") : t("toolPage.legendSource"),
+	);
+	const midLegend = $derived(
+		isChain ? t("chain.paramsLegend") : t("toolPage.legendParams"),
+	);
 	const rightLegend = $derived(
-		isChain ? t('chain.resultLegend') : isInfo ? t('toolPage.legendSummary') : t('toolPage.legendResult')
+		isChain
+			? t("chain.resultLegend")
+			: isInfo
+				? t("toolPage.legendSummary")
+				: t("toolPage.legendResult"),
 	);
 </script>
 
-<div class="panel stage-grid" class:no-params={!showParams} class:single={!isChain && !!isSourceless}>
+<div
+	class="panel stage-grid"
+	class:no-params={!showParams}
+	class:single={!isChain && !!isSourceless}
+>
 	{#if header}
 		{@render header()}
 	{/if}
 
 	{#if isChain}
 		<section class="pane">
-			<span class="edge-legend pane-legend" aria-hidden="true">{leftLegend}</span>
+			<span class="edge-legend pane-legend" aria-hidden="true"
+				>{leftLegend}</span
+			>
 			<div class="pane-body">
 				<Preview image={input} />
 			</div>
 		</section>
 	{:else if !isSourceless}
 		<section class="pane">
-			<span class="edge-legend pane-legend" aria-hidden="true">{leftLegend}</span>
+			<span class="edge-legend pane-legend" aria-hidden="true"
+				>{leftLegend}</span
+			>
 			<div class="pane-body">
 				{#if isTextSource && !source}
 					<TextInputCard onSubmit={(text) => onTextSubmit?.(text)} />
@@ -162,34 +178,50 @@
 
 	{#if showParams}
 		<section class="pane pane-params">
-			<span class="edge-legend pane-legend" aria-hidden="true">{midLegend}</span>
+			<span class="edge-legend pane-legend" aria-hidden="true">{midLegend}</span
+			>
 			<div class="pane-body">
-				<ParamsCard {tool} params={tool.params} bind:values {pipetteTargetId} onPipetteToggle={(id) => handlePipetteToggle?.(id)} {hasMask} bind:showMask />
+				<ParamsCard
+					{tool}
+					params={tool.params}
+					bind:values
+					{pipetteTargetId}
+					onPipetteToggle={(id) => handlePipetteToggle?.(id)}
+					{hasMask}
+					bind:showMask
+				/>
 			</div>
 		</section>
 	{/if}
 
 	<section class="pane">
-		<span class="edge-legend pane-legend" aria-hidden="true">{rightLegend}</span>
+		<span class="edge-legend pane-legend" aria-hidden="true">{rightLegend}</span
+		>
 		<div class="pane-body">
 			{#if isChain}
 				{#if busy && !result}
-					<EmptyState title={t('chain.busyTitle')} hint={t('chain.busyHint')} />
+					<EmptyState title={t("chain.busyTitle")} hint={t("chain.busyHint")} />
 				{:else}
 					<Preview image={result} />
 					{#if busy}
-						<span class="recalc" aria-live="polite">{t('resultCard.recalc')}</span>
+						<span class="recalc" aria-live="polite"
+							>{t("resultCard.recalc")}</span
+						>
 					{/if}
 					<div class="actions-row">
 						<DownloadButton
 							image={result}
-							format={format}
+							{format}
 							baseName="{index + 2}-{tool.id}"
 							params={safeParams}
 							onError={(e) => showError?.(e)}
 						/>
-						<Button variant="secondary" fullWidth onclick={isLast ? onAddStep : onRemoveChain}>
-							{isLast ? t('resultCard.nextTool') : t('resultCard.breakChain')}
+						<Button
+							variant="secondary"
+							fullWidth
+							onclick={isLast ? onAddStep : onRemoveChain}
+						>
+							{isLast ? t("resultCard.nextTool") : t("resultCard.breakChain")}
 						</Button>
 					</div>
 				{/if}
@@ -199,11 +231,11 @@
 					sourceLoaded={isSourceless ? true : !!source}
 					{status}
 					{result}
-					displayImage={displayImage}
+					{displayImage}
 					{info}
 					{isInfo}
 					params={sanitized}
-					textResult={textResult}
+					{textResult}
 					onChainToggle={canChainBase ? toggleChain : undefined}
 					{hasChain}
 					onDownloadError={(e) => showError?.(e)}
@@ -276,7 +308,7 @@
 		text-align: left;
 	}
 
-	.pane-params :global(input[type='range']) {
+	.pane-params :global(input[type="range"]) {
 		order: -1;
 		flex: 1 1 100%;
 		min-width: 0;
@@ -306,7 +338,10 @@
 
 	@media (min-width: 75rem) {
 		.stage-grid:not(.no-params):not(.single) {
-			grid-template-columns: minmax(0, 1fr) clamp(13rem, 17vw, 18rem) minmax(0, 1fr);
+			grid-template-columns: minmax(0, 1fr) clamp(13rem, 17vw, 18rem) minmax(
+					0,
+					1fr
+				);
 		}
 
 		.stage-grid.no-params:not(.single),

web/src/lib/components/stage/ToolStageClassic.svelte

@@ -1,10 +1,10 @@
 <script lang="ts">
-	import { t } from '$lib/i18n/t';
-	import ParamsCard from '../tool/ParamsCard.svelte';
-	import ResultCard from '../tool/ResultCard.svelte';
-	import SourceCard from '../tool/SourceCard.svelte';
-	import TextInputCard from '../tool/TextInputCard.svelte';
-	import type { StageProps } from './stage-props';
+	import { t } from "$lib/i18n/t";
+	import ParamsCard from "../tool/ParamsCard.svelte";
+	import ResultCard from "../tool/ResultCard.svelte";
+	import SourceCard from "../tool/SourceCard.svelte";
+	import TextInputCard from "../tool/TextInputCard.svelte";
+	import type { StageProps } from "./stage-props";
 
 	let {
 		tool,
@@ -32,14 +32,16 @@
 		handlePipetteToggle,
 		handlePickColor,
 		showError,
-		errorMessage
+		errorMessage,
 	}: StageProps = $props();
 </script>
 
 <div class="panel tool-block">
 	<div class="tool-stage" class:single={isSourceless}>
 		{#if !isSourceless}
-			<span class="edge-legend source-legend" aria-hidden="true">{t('toolPage.legendSource')}</span>
+			<span class="edge-legend source-legend" aria-hidden="true"
+				>{t("toolPage.legendSource")}</span
+			>
 			<div class="cell">
 				{#if isTextSource && !source}
 					<TextInputCard onSubmit={onTextSubmit} />
@@ -56,7 +58,7 @@
 			</div>
 		{/if}
 		<span class="edge-legend result-legend" aria-hidden="true">
-			{isInfo ? t('toolPage.legendSummary') : t('toolPage.legendResult')}
+			{isInfo ? t("toolPage.legendSummary") : t("toolPage.legendResult")}
 		</span>
 		<div class="cell">
 			<ResultCard
@@ -64,11 +66,11 @@
 				sourceLoaded={isSourceless ? true : !!source}
 				{status}
 				{result}
-				displayImage={displayImage}
+				{displayImage}
 				{info}
 				{isInfo}
 				params={sanitized}
-				textResult={textResult}
+				{textResult}
 				onChainToggle={canChainBase ? toggleChain : undefined}
 				{hasChain}
 				onDownloadError={showError}
@@ -78,7 +80,9 @@
 
 	{#if (source || isSourceless) && !isInfo && (tool.params.length > 0 || hasMask)}
 		<div class="params-sep">
-			<span class="edge-legend" aria-hidden="true">{t('toolPage.legendParams')}</span>
+			<span class="edge-legend" aria-hidden="true"
+				>{t("toolPage.legendParams")}</span
+			>
 		</div>
 		<ParamsCard
 			{tool}

web/src/lib/components/stage/stage-props.ts

@@ -1,8 +1,8 @@
-import type { ImageInfo } from '$lib/core/analyze';
-import type { PixelImage } from '$lib/core/types';
-import type { ToolEntry } from '$lib/registry';
+import type { ImageInfo } from "$lib/core/analyze";
+import type { PixelImage } from "$lib/core/types";
+import type { ToolEntry } from "$lib/registry";
 
-export type StageStatus = 'idle' | 'loaded' | 'processing' | 'error';
+export type StageStatus = "idle" | "loaded" | "processing" | "error";
 
 export interface StageProps {
 	tool: ToolEntry;

web/src/lib/components/tool/OverlayCard.svelte

@@ -1,9 +1,9 @@
 <script lang="ts">
-	import { t } from '$lib/i18n/t';
-	import type { PixelImage } from '$lib/core/types';
-	import DropZone from '../DropZone.svelte';
-	import Preview from '../Preview.svelte';
-	import Button from '../ui/Button.svelte';
+	import { t } from "$lib/i18n/t";
+	import type { PixelImage } from "$lib/core/types";
+	import DropZone from "../DropZone.svelte";
+	import Preview from "../Preview.svelte";
+	import Button from "../ui/Button.svelte";
 
 	interface Props {
 		overlay: PixelImage | null;
@@ -16,13 +16,17 @@
 </script>
 
 <div class="overlay-card">
-	<span class="edge-legend overlay-legend" aria-hidden="true">{t('ui.overlayTitle')}</span>
+	<span class="edge-legend overlay-legend" aria-hidden="true"
+		>{t("ui.overlayTitle")}</span
+	>
 	{#if !overlay}
-		<DropZone {onFile} {onError} label={t('ui.overlayDrop')} />
+		<DropZone {onFile} {onError} label={t("ui.overlayDrop")} />
 	{:else}
 		<div class="preview-wrap">
 			<Preview image={overlay} />
-			<Button variant="secondary" onclick={onClear}>{t('ui.overlayRemove')}</Button>
+			<Button variant="secondary" onclick={onClear}
+				>{t("ui.overlayRemove")}</Button
+			>
 		</div>
 	{/if}
 </div>

web/src/lib/components/tool/ParamsCard.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
-	import ParamForm from '../ParamForm.svelte';
-	import type { ParamDef, ToolEntry } from '$lib/registry';
-	import { t } from '$lib/i18n/t';
+	import ParamForm from "../ParamForm.svelte";
+	import type { ParamDef, ToolEntry } from "$lib/registry";
+	import { t } from "$lib/i18n/t";
 
 	interface Props {
 		tool: ToolEntry;
@@ -20,7 +20,7 @@
 		pipetteTargetId = null,
 		onPipetteToggle,
 		hasMask = false,
-		showMask = $bindable(false)
+		showMask = $bindable(false),
 	}: Props = $props();
 </script>
 
@@ -36,7 +36,7 @@
 			bind:showMask
 		/>
 	{:else}
-		<p class="hint text-caption text-muted">{t('paramsCard.noParams')}</p>
+		<p class="hint text-caption text-muted">{t("paramsCard.noParams")}</p>
 	{/if}
 </div>
 

web/src/lib/components/tool/PipetteLoupe.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-	import type { PixelImage } from '$lib/core/types';
+	import type { PixelImage } from "$lib/core/types";
 
 	interface Props {
 		image: PixelImage;
@@ -25,10 +25,16 @@
 
 	function ensureSource(): HTMLCanvasElement | null {
 		if (!srcCanvas || srcKey !== image) {
-			srcCanvas = document.createElement('canvas');
+			srcCanvas = document.createElement("canvas");
 			srcCanvas.width = image.width;
 			srcCanvas.height = image.height;
-			srcCanvas.getContext('2d')?.putImageData(new ImageData(image.data, image.width, image.height), 0, 0);
+			srcCanvas
+				.getContext("2d")
+				?.putImageData(
+					new ImageData(image.data, image.width, image.height),
+					0,
+					0,
+				);
 			srcKey = image;
 		}
 		return srcCanvas;
@@ -38,8 +44,12 @@
 		return Math.min(max, Math.max(min, v));
 	}
 
-	const blockX = $derived(clamp(px - HALF, 0, Math.max(0, image.width - BLOCK)));
-	const blockY = $derived(clamp(py - HALF, 0, Math.max(0, image.height - BLOCK)));
+	const blockX = $derived(
+		clamp(px - HALF, 0, Math.max(0, image.width - BLOCK)),
+	);
+	const blockY = $derived(
+		clamp(py - HALF, 0, Math.max(0, image.height - BLOCK)),
+	);
 	const flipBelow = $derived(clientY < SIZE + 24);
 
 	$effect(() => {
@@ -47,12 +57,12 @@
 		const dpr = window.devicePixelRatio || 1;
 		loupeCanvas.width = SIZE * dpr;
 		loupeCanvas.height = SIZE * dpr;
-		const ctx = loupeCanvas.getContext('2d');
+		const ctx = loupeCanvas.getContext("2d");
 		const src = ensureSource();
 		if (!ctx || !src) return;
 		ctx.setTransform(dpr, 0, 0, dpr, 0, 0);
 		ctx.imageSmoothingEnabled = false;
-		ctx.fillStyle = '#111318';
+		ctx.fillStyle = "#111318";
 		ctx.fillRect(0, 0, SIZE, SIZE);
 		ctx.drawImage(
 			src,
@@ -63,11 +73,16 @@
 			CENTER + (blockX - px) * ZOOM,
 			CENTER + (blockY - py) * ZOOM,
 			BLOCK * ZOOM,
-			BLOCK * ZOOM
+			BLOCK * ZOOM,
 		);
-		ctx.strokeStyle = 'rgba(255,255,255,0.9)';
+		ctx.strokeStyle = "rgba(255,255,255,0.9)";
 		ctx.lineWidth = 1;
-		ctx.strokeRect(CENTER - ZOOM / 2 + 0.5, CENTER - ZOOM / 2 + 0.5, ZOOM, ZOOM);
+		ctx.strokeRect(
+			CENTER - ZOOM / 2 + 0.5,
+			CENTER - ZOOM / 2 + 0.5,
+			ZOOM,
+			ZOOM,
+		);
 	});
 </script>
 
@@ -77,7 +92,8 @@
 	style="left:{clientX}px;top:{clientY}px"
 	aria-hidden="true"
 >
-	<canvas bind:this={loupeCanvas} style="width:{SIZE}px;height:{SIZE}px"></canvas>
+	<canvas bind:this={loupeCanvas} style="width:{SIZE}px;height:{SIZE}px"
+	></canvas>
 	<p class="hex">{hex}</p>
 </div>
 

web/src/lib/components/tool/ResultCard.svelte

@@ -1,16 +1,16 @@
 <script lang="ts">
-	import Button from '../ui/Button.svelte';
-	import DownloadButton from '../DownloadButton.svelte';
-	import EmptyState from '../ui/EmptyState.svelte';
-	import InfoPanel from '../InfoPanel.svelte';
-	import Preview from '../Preview.svelte';
-	import TextResult from './TextResult.svelte';
-	import type { ImageInfo } from '$lib/core/analyze';
-	import type { PixelImage } from '$lib/core/types';
-	import { outputOf, type ToolEntry } from '$lib/registry';
-	import { t } from '$lib/i18n/t';
+	import Button from "../ui/Button.svelte";
+	import DownloadButton from "../DownloadButton.svelte";
+	import EmptyState from "../ui/EmptyState.svelte";
+	import InfoPanel from "../InfoPanel.svelte";
+	import Preview from "../Preview.svelte";
+	import TextResult from "./TextResult.svelte";
+	import type { ImageInfo } from "$lib/core/analyze";
+	import type { PixelImage } from "$lib/core/types";
+	import { outputOf, type ToolEntry } from "$lib/registry";
+	import { t } from "$lib/i18n/t";
 
-	type Status = 'idle' | 'loaded' | 'processing' | 'error';
+	type Status = "idle" | "loaded" | "processing" | "error";
 
 	interface Props {
 		tool: ToolEntry;
@@ -39,20 +39,23 @@
 		textResult,
 		onChainToggle,
 		hasChain = false,
-		onDownloadError
+		onDownloadError,
 	}: Props = $props();
 </script>
 
 <div class="container">
 	{#if !sourceLoaded}
 		<div class="media">
-			<EmptyState title={t('resultCard.emptyTitle')} hint={t('resultCard.emptyHint')} />
+			<EmptyState
+				title={t("resultCard.emptyTitle")}
+				hint={t("resultCard.emptyHint")}
+			/>
 		</div>
-	{:else if !isInfo && status === 'processing' && !result}
+	{:else if !isInfo && status === "processing" && !result}
 		<div class="media">
 			<EmptyState
-				title={t('resultCard.processingTitle')}
-				hint={t('resultCard.processingHint')}
+				title={t("resultCard.processingTitle")}
+				hint={t("resultCard.processingHint")}
 			/>
 		</div>
 	{:else if isInfo}
@@ -61,7 +64,7 @@
 				<InfoPanel {info} />
 			{/if}
 		</div>
-	{:else if tool.resultType === 'text'}
+	{:else if tool.resultType === "text"}
 		<div class="media">
 			{#if textResult !== null}
 				<TextResult text={textResult} filename={tool.id} toolId={tool.id} />
@@ -70,8 +73,8 @@
 	{:else}
 		<div class="media">
 			<Preview image={displayImage} />
-			{#if status === 'processing'}
-				<span class="recalc" aria-live="polite">{t('resultCard.recalc')}</span>
+			{#if status === "processing"}
+				<span class="recalc" aria-live="polite">{t("resultCard.recalc")}</span>
 			{/if}
 		</div>
 		<div class="actions-row">
@@ -84,7 +87,7 @@
 			/>
 			{#if onChainToggle}
 				<Button variant="secondary" fullWidth onclick={onChainToggle}>
-					{hasChain ? t('resultCard.breakChain') : t('resultCard.nextTool')}
+					{hasChain ? t("resultCard.breakChain") : t("resultCard.nextTool")}
 				</Button>
 			{/if}
 		</div>

web/src/lib/components/tool/SourceCard.svelte

@@ -1,10 +1,10 @@
 <script lang="ts">
-	import type { PixelImage } from '$lib/core/types';
-	import { t } from '$lib/i18n/t';
-	import DropOverlay from '../DropOverlay.svelte';
-	import DropZone from '../DropZone.svelte';
-	import Preview from '../Preview.svelte';
-	import Button from '../ui/Button.svelte';
+	import type { PixelImage } from "$lib/core/types";
+	import { t } from "$lib/i18n/t";
+	import DropOverlay from "../DropOverlay.svelte";
+	import DropZone from "../DropZone.svelte";
+	import Preview from "../Preview.svelte";
+	import Button from "../ui/Button.svelte";
 
 	interface Props {
 		source: PixelImage | null;
@@ -15,7 +15,14 @@
 		onPickColor?: (hex: string) => void;
 	}
 
-	let { source, onFile, onError, onReset, pipetteActive = false, onPickColor }: Props = $props();
+	let {
+		source,
+		onFile,
+		onError,
+		onReset,
+		pipetteActive = false,
+		onPickColor,
+	}: Props = $props();
 </script>
 
 <div class="container">
@@ -24,9 +31,11 @@
 	{:else}
 		<DropOverlay {onFile} {onError}>
 			<div class="media">
-				<Preview image={source} pipetteActive={pipetteActive} onPickColor={onPickColor} />
+				<Preview image={source} {pipetteActive} {onPickColor} />
 			</div>
-			<Button variant="secondary" onclick={onReset}>{t('sourceCard.replaceImage')}</Button>
+			<Button variant="secondary" onclick={onReset}
+				>{t("sourceCard.replaceImage")}</Button
+			>
 		</DropOverlay>
 	{/if}
 </div>

web/src/lib/components/tool/TextInputCard.svelte

@@ -1,6 +1,6 @@
 <script lang="ts">
-	import Button from '../ui/Button.svelte';
-	import { t } from '$lib/i18n/t';
+	import Button from "../ui/Button.svelte";
+	import { t } from "$lib/i18n/t";
 
 	interface Props {
 		onSubmit: (text: string) => void;
@@ -8,7 +8,7 @@
 
 	let { onSubmit }: Props = $props();
 
-	let text = $state('');
+	let text = $state("");
 
 	function submit() {
 		if (text.trim().length === 0) return;
@@ -17,16 +17,19 @@
 </script>
 
 <div class="container">
-	<h2 class="heading-section">{t('textInput.heading')}</h2>
+	<h2 class="heading-section">{t("textInput.heading")}</h2>
 	<textarea
 		class="input"
 		rows="8"
 		bind:value={text}
-		placeholder={t('textInput.placeholder')}
-		aria-label={t('textInput.aria')}
-	></textarea>
-	<Button variant="secondary" onclick={submit} disabled={text.trim().length === 0}>
-		{t('textInput.decode')}
+		placeholder={t("textInput.placeholder")}
+		aria-label={t("textInput.aria")}></textarea>
+	<Button
+		variant="secondary"
+		onclick={submit}
+		disabled={text.trim().length === 0}
+	>
+		{t("textInput.decode")}
 	</Button>
 </div>
 

web/src/lib/components/tool/TextResult.svelte

@@ -1,7 +1,7 @@
 <script lang="ts">
-	import { downloadBlob } from '$lib/core/io';
-	import { t } from '$lib/i18n/t';
-	import { getMergedDict } from '$lib/i18n/locale.svelte';
+	import { downloadBlob } from "$lib/core/io";
+	import { t } from "$lib/i18n/t";
+	import { getMergedDict } from "$lib/i18n/locale.svelte";
 
 	interface Props {
 		text: string;
@@ -12,7 +12,7 @@
 	let { text, filename, toolId }: Props = $props();
 
 	const shown = $derived(
-		toolId ? (getMergedDict().tools[toolId]?.results?.[text] ?? text) : text
+		toolId ? (getMergedDict().tools[toolId]?.results?.[text] ?? text) : text,
 	);
 
 	let copied = $state(false);
@@ -24,17 +24,24 @@
 	}
 
 	function download() {
-		downloadBlob(new Blob([shown], { type: 'text/plain' }), `${filename}.txt`);
+		downloadBlob(new Blob([shown], { type: "text/plain" }), `${filename}.txt`);
 	}
 </script>
 
 <div class="panel text-result">
-	<textarea class="output" rows="10" readonly value={shown} aria-label={t('textResult.outputAria')}></textarea>
+	<textarea
+		class="output"
+		rows="10"
+		readonly
+		value={shown}
+		aria-label={t("textResult.outputAria")}></textarea>
 	<div class="actions">
 		<button type="button" class="secondary" onclick={copy}>
-			{copied ? t('textResult.copied') : t('textResult.copy')}
+			{copied ? t("textResult.copied") : t("textResult.copy")}
 		</button>
-		<button type="button" class="primary" onclick={download}>{t('textResult.downloadTxt')}</button>
+		<button type="button" class="primary" onclick={download}
+			>{t("textResult.downloadTxt")}</button
+		>
 	</div>
 </div>
 

web/src/lib/components/ui/Button.svelte

@@ -1,9 +1,9 @@
 <script lang="ts">
-	import type { Snippet } from 'svelte';
+	import type { Snippet } from "svelte";
 
 	interface Props {
-		variant?: 'primary' | 'secondary';
-		type?: 'button' | 'submit';
+		variant?: "primary" | "secondary";
+		type?: "button" | "submit";
 		disabled?: boolean;
 		busy?: boolean;
 		busyText?: string;
@@ -13,14 +13,14 @@
 	}
 
 	let {
-		variant = 'primary',
-		type = 'button',
+		variant = "primary",
+		type = "button",
 		disabled = false,
 		busy = false,
-		busyText = '',
+		busyText = "",
 		fullWidth = false,
 		onclick,
-		children
+		children,
 	}: Props = $props();
 </script>
 
@@ -29,7 +29,7 @@
 	class={fullWidth ? `${variant} fullwidth` : variant}
 	aria-busy={busy}
 	disabled={disabled || busy}
-	onclick={onclick}
+	{onclick}
 >
 	{#if busy && busyText}
 		{busyText}

web/src/lib/components/ui/CheckboxField.svelte

@@ -11,7 +11,7 @@
 
 <div class="checkbox-row">
 	<label class="checkbox" for={id}>
-		<input id={id} type="checkbox" bind:checked />
+		<input {id} type="checkbox" bind:checked />
 		{label}
 	</label>
 	{#if hint}
@@ -38,7 +38,7 @@
 		color: var(--text-muted);
 	}
 
-	input[type='checkbox'] {
+	input[type="checkbox"] {
 		width: 1rem;
 		height: 1rem;
 		cursor: pointer;

web/src/lib/components/ui/ColorField.svelte

@@ -1,6 +1,6 @@
 <script lang="ts">
-	import Field from './Field.svelte';
-	import { t } from '$lib/i18n/t';
+	import Field from "./Field.svelte";
+	import { t } from "$lib/i18n/t";
 
 	interface Props {
 		id: string;
@@ -11,20 +11,26 @@
 		onPipetteToggle?: () => void;
 	}
 
-	let { id, label, value = $bindable('#000000'), hint, pipetteActive = false, onPipetteToggle }:
-		Props = $props();
+	let {
+		id,
+		label,
+		value = $bindable("#000000"),
+		hint,
+		pipetteActive = false,
+		onPipetteToggle,
+	}: Props = $props();
 </script>
 
 <Field {id} {label} {hint}>
 	<div class="row">
-		<input id={id} class="control swatch" type="color" bind:value />
+		<input {id} class="control swatch" type="color" bind:value />
 		{#if onPipetteToggle}
 			<button
 				type="button"
 				class="pipette"
-				aria-label={t('ui.pipette')}
+				aria-label={t("ui.pipette")}
 				aria-pressed={pipetteActive}
-				title={t('ui.pipette')}
+				title={t("ui.pipette")}
 				onclick={onPipetteToggle}
 			>
 				◎
@@ -73,7 +79,7 @@
 		color: var(--link);
 	}
 
-	.pipette[aria-pressed='true'] {
+	.pipette[aria-pressed="true"] {
 		border-color: var(--link);
 		color: var(--link);
 		background: color-mix(in srgb, var(--accent) 10%, var(--surface));

web/src/lib/components/ui/EmptyState.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-	import type { Snippet } from 'svelte';
+	import type { Snippet } from "svelte";
 
 	interface Props {
 		title: string;

web/src/lib/components/ui/Field.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-	import type { Snippet } from 'svelte';
+	import type { Snippet } from "svelte";
 
 	interface Props {
 		id: string;

web/src/lib/components/ui/SelectField.svelte

@@ -1,5 +1,5 @@
 <script lang="ts">
-	import Field from './Field.svelte';
+	import Field from "./Field.svelte";
 
 	interface Props {
 		id: string;
@@ -9,11 +9,11 @@
 		hint?: string;
 	}
 
-	let { id, label, value = $bindable(''), options, hint }: Props = $props();
+	let { id, label, value = $bindable(""), options, hint }: Props = $props();
 </script>
 
 <Field {id} {label} {hint}>
-	<select id={id} class="control" bind:value>
+	<select {id} class="control" bind:value>
 		{#each options as option (option.value)}
 			<option value={option.value}>{option.label}</option>
 		{/each}

web/src/lib/components/ui/SliderField.svelte

@@ -1,6 +1,6 @@
 <script lang="ts">
-	import Field from './Field.svelte';
-	import { t } from '$lib/i18n/t';
+	import Field from "./Field.svelte";
+	import { t } from "$lib/i18n/t";
 
 	interface Props {
 		id: string;
@@ -21,7 +21,7 @@
 		max,
 		step,
 		default: defaultValue,
-		hint
+		hint,
 	}: Props = $props();
 
 	function decrement() {
@@ -38,18 +38,30 @@
 		if (defaultValue !== undefined) value = defaultValue;
 	}
 
-	const resetDisabled = $derived(defaultValue === undefined || value === defaultValue);
+	const resetDisabled = $derived(
+		defaultValue === undefined || value === defaultValue,
+	);
 </script>
 
 <Field {id} {label} {hint}>
 	<div class="row">
-		<button type="button" class="step" aria-label={t('ui.decrease')} onclick={decrement}>−</button>
-		<input id={id} type="range" min={min} max={max} step={step} bind:value />
-		<button type="button" class="step" aria-label={t('ui.increase')} onclick={increment}>+</button>
 		<button
 			type="button"
 			class="step"
-			aria-label={t('ui.reset')}
+			aria-label={t("ui.decrease")}
+			onclick={decrement}>−</button
+		>
+		<input {id} type="range" {min} {max} {step} bind:value />
+		<button
+			type="button"
+			class="step"
+			aria-label={t("ui.increase")}
+			onclick={increment}>+</button
+		>
+		<button
+			type="button"
+			class="step"
+			aria-label={t("ui.reset")}
 			disabled={resetDisabled}
 			onclick={reset}
 		>
@@ -68,7 +80,7 @@
 		max-width: 22rem;
 	}
 
-	input[type='range'] {
+	input[type="range"] {
 		flex: 1;
 		min-width: 3rem;
 		accent-color: var(--link);

web/src/lib/components/ui/TextField.svelte

@@ -1,11 +1,11 @@
 <script lang="ts">
-	import Field from './Field.svelte';
+	import Field from "./Field.svelte";
 
 	interface Props {
 		id: string;
 		label: string;
 		value?: string | number;
-		type?: 'number' | 'text';
+		type?: "number" | "text";
 		min?: number;
 		max?: number;
 		step?: number;
@@ -13,12 +13,30 @@
 		placeholder?: string;
 	}
 
-	let { id, label, value = $bindable(''), type = 'text', min, max, step, hint, placeholder }: Props =
-		$props();
+	let {
+		id,
+		label,
+		value = $bindable(""),
+		type = "text",
+		min,
+		max,
+		step,
+		hint,
+		placeholder,
+	}: Props = $props();
 </script>
 
 <Field {id} {label} {hint}>
-	<input class="control" {id} {type} min={min} max={max} step={step} {placeholder} bind:value />
+	<input
+		class="control"
+		{id}
+		{type}
+		{min}
+		{max}
+		{step}
+		{placeholder}
+		bind:value
+	/>
 </Field>
 
 <style>

web/src/lib/core/affine.test.ts

@@ -1,39 +1,53 @@
-import { describe, expect, it } from 'vitest';
-import { rotate90, sampleBilinear } from './geometry';
-import { rotateFreeImage, skewImage, transformImage, zoomImage } from './affine';
-import { makeImage } from './test-helpers';
+import { describe, expect, it } from "vitest";
+import { rotate90, sampleBilinear } from "./geometry";
+import {
+	rotateFreeImage,
+	skewImage,
+	transformImage,
+	zoomImage,
+} from "./affine";
+import { makeImage } from "./test-helpers";
 
-describe('sampleBilinear', () => {
-	it('целые координаты возвращают точный пиксель', () => {
+describe("sampleBilinear", () => {
+	it("целые координаты возвращают точный пиксель", () => {
 		const img = makeImage(2, 1, [
 			[255, 0, 0, 255],
-			[0, 0, 255, 255]
+			[0, 0, 255, 255],
 		]);
 		expect(sampleBilinear(img, 0, 0)).toEqual([255, 0, 0, 255]);
 		expect(sampleBilinear(img, 1, 0)).toEqual([0, 0, 255, 255]);
 	});
 
-	it('дробная координата интерполирует', () => {
+	it("дробная координата интерполирует", () => {
 		const img = makeImage(2, 1, [
 			[0, 0, 0, 255],
-			[200, 200, 200, 255]
+			[200, 200, 200, 255],
 		]);
 		const [r] = sampleBilinear(img, 0.5, 0);
 		expect(r).toBeCloseTo(100, 0);
 	});
 
-	it('координаты за краем клампятся', () => {
+	it("координаты за краем клампятся", () => {
 		const img = makeImage(1, 1, [[7, 7, 7, 255]]);
 		expect(sampleBilinear(img, -10, -10)).toEqual([7, 7, 7, 255]);
 	});
 });
 
-describe('rotateFreeImage', () => {
-	it('поворот на 180° даёт размеры не меньше исходных и непустой результат', () => {
+describe("rotateFreeImage", () => {
+	it("поворот на 180° даёт размеры не меньше исходных и непустой результат", () => {
 		const img = makeImage(4, 3, [
-			[255, 0, 0, 255], [0, 255, 0, 255], [0, 0, 255, 255], [255, 255, 0, 255],
-			[128, 128, 128, 255], [64, 64, 64, 255], [32, 32, 32, 255], [200, 200, 200, 255],
-			[10, 20, 30, 255], [40, 50, 60, 255], [70, 80, 90, 255], [100, 100, 100, 255]
+			[255, 0, 0, 255],
+			[0, 255, 0, 255],
+			[0, 0, 255, 255],
+			[255, 255, 0, 255],
+			[128, 128, 128, 255],
+			[64, 64, 64, 255],
+			[32, 32, 32, 255],
+			[200, 200, 200, 255],
+			[10, 20, 30, 255],
+			[40, 50, 60, 255],
+			[70, 80, 90, 255],
+			[100, 100, 100, 255],
 		]);
 		const out = rotateFreeImage(img, 180);
 		expect(out.width).toBeGreaterThanOrEqual(img.width);
@@ -46,12 +60,8 @@ describe('rotateFreeImage', () => {
 		expect(opaque / total).toBeGreaterThan(0.8);
 	});
 
-	it('поворот квадрата на 360° близок к оригиналу', () => {
-		const img = makeImage(
-			5,
-			5,
-			new Array(25).fill([200, 100, 50, 255])
-		);
+	it("поворот квадрата на 360° близок к оригиналу", () => {
+		const img = makeImage(5, 5, new Array(25).fill([200, 100, 50, 255]));
 		const out = rotateFreeImage(img, 360);
 		expect(out.width).toBeGreaterThanOrEqual(5);
 		expect(out.height).toBeGreaterThanOrEqual(5);
@@ -59,15 +69,17 @@ describe('rotateFreeImage', () => {
 			for (let x = 0; x < 5; x++) {
 				const di = (y * out.width + x) * 4;
 				for (let ch = 0; ch < 4; ch++) {
-					expect(Math.abs(out.data[di + ch] - img.data[(y * 5 + x) * 4 + ch])).toBeLessThanOrEqual(4);
+					expect(
+						Math.abs(out.data[di + ch] - img.data[(y * 5 + x) * 4 + ch]),
+					).toBeLessThanOrEqual(4);
 				}
 			}
 		}
 	});
 });
 
-describe('skewImage', () => {
-	it('наклон X=45° расширяет холст до w+h−1 и сдвигает строки вправо', () => {
+describe("skewImage", () => {
+	it("наклон X=45° расширяет холст до w+h−1 и сдвигает строки вправо", () => {
 		const img = makeImage(2, 2, new Array(4).fill([255, 0, 0, 255]));
 		const out = skewImage(img, 45, 0);
 		expect(out.width).toBe(3);
@@ -76,16 +88,20 @@ describe('skewImage', () => {
 		for (let i = 3; i < out.data.length; i += 4) {
 			if (out.data[i] === 255) {
 				opaque++;
-				expect([out.data[i - 3], out.data[i - 2], out.data[i - 1]]).toEqual([255, 0, 0]);
+				expect([out.data[i - 3], out.data[i - 2], out.data[i - 1]]).toEqual([
+					255, 0, 0,
+				]);
 			}
 		}
 		expect(opaque).toBe(4);
 	});
 
-	it('углы 0° — тождественное преобразование', () => {
+	it("углы 0° — тождественное преобразование", () => {
 		const img = makeImage(2, 2, [
-			[255, 0, 0, 255], [0, 255, 0, 255],
-			[0, 0, 255, 255], [128, 128, 128, 255]
+			[255, 0, 0, 255],
+			[0, 255, 0, 255],
+			[0, 0, 255, 255],
+			[128, 128, 128, 255],
 		]);
 		const out = skewImage(img, 0, 0);
 		expect(out.width).toBe(2);
@@ -93,22 +109,24 @@ describe('skewImage', () => {
 	});
 });
 
-describe('transformImage — заливка фона', () => {
-	it('сдвиг с белым фоном заполняет освободившийся край', () => {
+describe("transformImage — заливка фона", () => {
+	it("сдвиг с белым фоном заполняет освободившийся край", () => {
 		const img = makeImage(2, 2, [
-			[255, 0, 0, 255], [0, 255, 0, 255],
-			[0, 0, 255, 255], [128, 128, 128, 255]
+			[255, 0, 0, 255],
+			[0, 255, 0, 255],
+			[0, 0, 255, 255],
+			[128, 128, 128, 255],
 		]);
-		const out = transformImage(img, [1, 0, 0, 1, -1, 0], 2, 2, '#ffffff');
+		const out = transformImage(img, [1, 0, 0, 1, -1, 0], 2, 2, "#ffffff");
 		expect(out.width).toBe(2);
 		expect(out.height).toBe(2);
 		for (let y = 0; y < 2; y++) {
-			const di = (y * 2) * 4;
+			const di = y * 2 * 4;
 			expect([...out.data.slice(di, di + 4)]).toEqual([255, 255, 255, 255]);
 		}
 	});
 
-	it('без фона освободившийся край остаётся прозрачным', () => {
+	it("без фона освободившийся край остаётся прозрачным", () => {
 		const img = makeImage(2, 2, new Array(4).fill([10, 20, 30, 255]));
 		const out = transformImage(img, [1, 0, 0, 1, -1, 0], 2, 2);
 		expect(out.data[3]).toBe(0);

web/src/lib/core/affine.ts

@@ -1,14 +1,14 @@
-import { parseHex } from './alpha';
-import { ToolError } from './errors';
-import { clonePixelImage, createPixelImage, type PixelImage } from './types';
-import { sampleBilinear } from './geometry';
+import { parseHex } from "./alpha";
+import { ToolError } from "./errors";
+import { clonePixelImage, createPixelImage, type PixelImage } from "./types";
+import { sampleBilinear } from "./geometry";
 
 export type AffineMatrix = [number, number, number, number, number, number];
 
 export function invertAffine([a, b, c, d, e, f]: AffineMatrix): AffineMatrix {
 	const det = a * d - b * c;
 	if (Math.abs(det) < 1e-12) {
-		throw new ToolError('errors.badTransform');
+		throw new ToolError("errors.badTransform");
 	}
 	const ia = d / det;
 	const ib = -b / det;
@@ -24,7 +24,7 @@ export function transformImage(
 	dstToSrc: AffineMatrix,
 	outWidth: number,
 	outHeight: number,
-	bgHex?: string
+	bgHex?: string,
 ): PixelImage {
 	const [a, b, c, d, e, f] = dstToSrc;
 	const out = createPixelImage(outWidth, outHeight);
@@ -34,7 +34,12 @@ export function transformImage(
 			const sx = a * x + c * y + e;
 			const sy = b * x + d * y + f;
 			const di = (y * outWidth + x) * 4;
-			if (sx < -EPS || sy < -EPS || sx > img.width - 1 + EPS || sy > img.height - 1 + EPS) {
+			if (
+				sx < -EPS ||
+				sy < -EPS ||
+				sx > img.width - 1 + EPS ||
+				sy > img.height - 1 + EPS
+			) {
 				if (bg) {
 					out.data[di] = bg[0];
 					out.data[di + 1] = bg[1];
@@ -72,7 +77,7 @@ function centeredTransform(img: PixelImage, forward: AffineMatrix): PixelImage {
 		[0.5, 0.5],
 		[img.width - 0.5, 0.5],
 		[0.5, img.height - 0.5],
-		[img.width - 0.5, img.height - 0.5]
+		[img.width - 0.5, img.height - 0.5],
 	]) {
 		const qx = forward[0] * px + forward[2] * py + forward[4];
 		const qy = forward[1] * px + forward[3] * py + forward[5];
@@ -85,14 +90,23 @@ function centeredTransform(img: PixelImage, forward: AffineMatrix): PixelImage {
 	const outH = Math.round(maxY - minY) + 1;
 	const tx = inv[0] * minX + inv[2] * minY - 0.5;
 	const ty = inv[1] * minX + inv[3] * minY - 0.5;
-	return transformImage(img, [inv[0], inv[1], inv[2], inv[3], tx, ty], outW, outH);
+	return transformImage(
+		img,
+		[inv[0], inv[1], inv[2], inv[3], tx, ty],
+		outW,
+		outH,
+	);
 }
 
-export function skewImage(img: PixelImage, degX: number, degY: number): PixelImage {
+export function skewImage(
+	img: PixelImage,
+	degX: number,
+	degY: number,
+): PixelImage {
 	const kx = Math.tan((degX * Math.PI) / 180);
 	const ky = Math.tan((degY * Math.PI) / 180);
 	if (!Number.isFinite(kx) || !Number.isFinite(ky)) {
-		throw new ToolError('errors.skewAngle');
+		throw new ToolError("errors.skewAngle");
 	}
 	return centeredTransform(img, [1, ky, kx, 1, 0, 0]);
 }

web/src/lib/core/alpha.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from "vitest";
 import {
 	colorMask,
 	extractAlphaMask,
@@ -8,53 +8,52 @@ import {
 	parseHex,
 	removeColorToAlpha,
 	roundCorners,
-	setAlphaChannel
-} from './alpha';
-import { makeImage } from './test-helpers';
+	setAlphaChannel,
+} from "./alpha";
+import { makeImage } from "./test-helpers";
 
-describe('hardenAlpha', () => {
-	it('бинаризует альфу по порогу, RGB не трогает', () => {
+describe("hardenAlpha", () => {
+	it("бинаризует альфу по порогу, RGB не трогает", () => {
 		const out = hardenAlpha(
 			makeImage(2, 1, [
 				[10, 20, 30, 100],
-				[40, 50, 60, 200]
+				[40, 50, 60, 200],
 			]),
-			50
+			50,
 		);
-		expect([...out.data]).toEqual([
-			10, 20, 30, 0,
-			40, 50, 60, 255
-		]);
+		expect([...out.data]).toEqual([10, 20, 30, 0, 40, 50, 60, 255]);
 	});
 });
 
-describe('setAlphaChannel', () => {
-	it('задаёт константную альфу', () => {
-		const out = setAlphaChannel(makeImage(2, 1, [
-			[1, 2, 3, 255],
-			[4, 5, 6, 0]
-		]), 50);
+describe("setAlphaChannel", () => {
+	it("задаёт константную альфу", () => {
+		const out = setAlphaChannel(
+			makeImage(2, 1, [
+				[1, 2, 3, 255],
+				[4, 5, 6, 0],
+			]),
+			50,
+		);
 		expect(out.data[3]).toBe(128);
 		expect(out.data[7]).toBe(128);
 		expect(out.data[0]).toBe(1);
 	});
 });
 
-describe('extractAlphaMask', () => {
-	it('переводит альфу в чёрно-белую непрозрачную маску', () => {
-		const out = extractAlphaMask(makeImage(2, 1, [
-			[10, 20, 30, 255],
-			[40, 50, 60, 0]
-		]));
-		expect([...out.data]).toEqual([
-			255, 255, 255, 255,
-			0, 0, 0, 255
-		]);
+describe("extractAlphaMask", () => {
+	it("переводит альфу в чёрно-белую непрозрачную маску", () => {
+		const out = extractAlphaMask(
+			makeImage(2, 1, [
+				[10, 20, 30, 255],
+				[40, 50, 60, 0],
+			]),
+		);
+		expect([...out.data]).toEqual([255, 255, 255, 255, 0, 0, 0, 255]);
 	});
 });
 
-describe('roundCorners', () => {
-	it('срезает углы, центр и середины сторон остаются', () => {
+describe("roundCorners", () => {
+	it("срезает углы, центр и середины сторон остаются", () => {
 		const img = makeImage(11, 11, new Array(121).fill([100, 100, 100, 255]));
 		const out = roundCorners(img, 40);
 		expect(out.data[(0 * 11 + 0) * 4 + 3]).toBe(0);
@@ -62,125 +61,125 @@ describe('roundCorners', () => {
 		expect(out.data[(5 * 11 + 0) * 4 + 3]).toBe(255);
 	});
 
-	it('нулевой радиус ничего не меняет', () => {
+	it("нулевой радиус ничего не меняет", () => {
 		const img = makeImage(2, 2, new Array(4).fill([1, 2, 3, 255]));
 		expect([...roundCorners(img, 0).data]).toEqual([...img.data]);
 	});
 });
 
-describe('invertAlpha', () => {
-	it('обращает альфу, RGB не трогает', () => {
+describe("invertAlpha", () => {
+	it("обращает альфу, RGB не трогает", () => {
 		const out = invertAlpha(makeImage(1, 1, [[10, 20, 30, 128]]));
 		expect([...out.data]).toEqual([10, 20, 30, 127]);
 	});
 });
 
-describe('removeColorToAlpha', () => {
+describe("removeColorToAlpha", () => {
 	const fixture = () =>
 		makeImage(2, 1, [
 			[255, 255, 255, 255],
-			[255, 0, 0, 255]
+			[255, 0, 0, 255],
 		]);
 
-	it('обнуляет альфу только у точного совпадения при tolerance=0', () => {
-		const out = removeColorToAlpha(fixture(), '#ff0000', 0);
+	it("обнуляет альфу только у точного совпадения при tolerance=0", () => {
+		const out = removeColorToAlpha(fixture(), "#ff0000", 0);
 		expect(out.data[3]).toBe(255);
 		expect(out.data[7]).toBe(0);
 		expect(out.data[4]).toBe(255);
 		expect(out.data[5]).toBe(0);
 	});
 
-	it('поддерживает короткую форму и регистр hex', () => {
-		expect([...removeColorToAlpha(fixture(), '#f00', 0).data.slice(4)]).toEqual([
-			255, 0, 0, 0
-		]);
-		expect([...removeColorToAlpha(fixture(), '#FF0000', 0).data.slice(4)]).toEqual([
-			255, 0, 0, 0
-		]);
+	it("поддерживает короткую форму и регистр hex", () => {
+		expect([...removeColorToAlpha(fixture(), "#f00", 0).data.slice(4)]).toEqual(
+			[255, 0, 0, 0],
+		);
+		expect([
+			...removeColorToAlpha(fixture(), "#FF0000", 0).data.slice(4),
+		]).toEqual([255, 0, 0, 0]);
 	});
 
-	it('tolerance 100% удаляет весь диапазон расстояний', () => {
-		const out = removeColorToAlpha(fixture(), '#000000', 100);
+	it("tolerance 100% удаляет весь диапазон расстояний", () => {
+		const out = removeColorToAlpha(fixture(), "#000000", 100);
 		expect(out.data[3]).toBe(0);
 		expect(out.data[7]).toBe(0);
 	});
 
-	it('промежуточный tolerance различает близкие и далёкие цвета', () => {
+	it("промежуточный tolerance различает близкие и далёкие цвета", () => {
 		const img = makeImage(2, 1, [
 			[0, 0, 0, 255],
-			[128, 128, 128, 255]
+			[128, 128, 128, 255],
 		]);
-		const kept = removeColorToAlpha(img, '#000000', 40);
-		const removed = removeColorToAlpha(img, '#000000', 60);
+		const kept = removeColorToAlpha(img, "#000000", 40);
+		const removed = removeColorToAlpha(img, "#000000", 60);
 		expect(kept.data[3]).toBe(0);
 		expect(kept.data[7]).toBe(255);
 		expect(removed.data[3]).toBe(0);
 		expect(removed.data[7]).toBe(0);
 	});
 
-	it('не мутирует вход', () => {
+	it("не мутирует вход", () => {
 		const img = fixture();
-		removeColorToAlpha(img, '#ffffff', 100);
-		expect([...img.data]).toEqual([
-			255, 255, 255, 255,
-			255, 0, 0, 255
-		]);
+		removeColorToAlpha(img, "#ffffff", 100);
+		expect([...img.data]).toEqual([255, 255, 255, 255, 255, 0, 0, 255]);
 	});
 });
 
-describe('colorMask', () => {
-	it('удаляемые пиксели белые, остальные чёрные, маска непрозрачная', () => {
+describe("colorMask", () => {
+	it("удаляемые пиксели белые, остальные чёрные, маска непрозрачная", () => {
 		const out = colorMask(
 			makeImage(2, 1, [
 				[255, 0, 0, 255],
-				[0, 255, 0, 255]
+				[0, 255, 0, 255],
 			]),
-			'#ff0000',
-			0
+			"#ff0000",
+			0,
 		);
-		expect([...out.data]).toEqual([
-			255, 255, 255, 255,
-			0, 0, 0, 255
-		]);
+		expect([...out.data]).toEqual([255, 255, 255, 255, 0, 0, 0, 255]);
 	});
 
-	it('порог совпадает с removeColorToAlpha', () => {
+	it("порог совпадает с removeColorToAlpha", () => {
 		const img = makeImage(2, 1, [
 			[0, 0, 0, 255],
-			[128, 128, 128, 255]
+			[128, 128, 128, 255],
 		]);
-		const kept = colorMask(img, '#000000', 40);
-		const removed = colorMask(img, '#000000', 60);
+		const kept = colorMask(img, "#000000", 40);
+		const removed = colorMask(img, "#000000", 60);
 		expect(kept.data[4]).toBe(0);
 		expect(removed.data[4]).toBe(255);
 	});
 });
 
-describe('flattenOntoColor', () => {
-	it('непрозрачный пиксель не меняется, альфа становится 255', () => {
-		const out = flattenOntoColor(makeImage(1, 1, [[10, 20, 30, 255]]), '#ffffff');
+describe("flattenOntoColor", () => {
+	it("непрозрачный пиксель не меняется, альфа становится 255", () => {
+		const out = flattenOntoColor(
+			makeImage(1, 1, [[10, 20, 30, 255]]),
+			"#ffffff",
+		);
 		expect([...out.data]).toEqual([10, 20, 30, 255]);
 	});
 
-	it('полностью прозрачный пиксель становится цветом подложки', () => {
-		const out = flattenOntoColor(makeImage(1, 1, [[99, 99, 99, 0]]), '#ff8040');
+	it("полностью прозрачный пиксель становится цветом подложки", () => {
+		const out = flattenOntoColor(makeImage(1, 1, [[99, 99, 99, 0]]), "#ff8040");
 		expect([...out.data]).toEqual([255, 128, 64, 255]);
 	});
 
-	it('полупрозрачный пиксель смешивается с подложкой', () => {
-		const out = flattenOntoColor(makeImage(1, 1, [[10, 20, 30, 128]]), '#ffffff');
+	it("полупрозрачный пиксель смешивается с подложкой", () => {
+		const out = flattenOntoColor(
+			makeImage(1, 1, [[10, 20, 30, 128]]),
+			"#ffffff",
+		);
 		expect([...out.data]).toEqual([132, 137, 142, 255]);
 	});
 });
 
-describe('parseHex', () => {
-	it('разбирает #rrggbb, rrggbb, #rgb', () => {
-		expect(parseHex('#ff8040')).toEqual([255, 128, 64]);
-		expect(parseHex('ff8040')).toEqual([255, 128, 64]);
-		expect(parseHex('#F80')).toEqual([255, 136, 0]);
+describe("parseHex", () => {
+	it("разбирает #rrggbb, rrggbb, #rgb", () => {
+		expect(parseHex("#ff8040")).toEqual([255, 128, 64]);
+		expect(parseHex("ff8040")).toEqual([255, 128, 64]);
+		expect(parseHex("#F80")).toEqual([255, 136, 0]);
 	});
 
-	it.each(['zzz', '12345', '##ff', ''])('бросает ошибку на "%s"', (bad) => {
+	it.each(["zzz", "12345", "##ff", ""])('бросает ошибку на "%s"', (bad) => {
 		expect(() => parseHex(bad)).toThrow(/errors\.badHex/);
 	});
 });

web/src/lib/core/alpha.ts

@@ -1,17 +1,22 @@
-import { createPixelImage, type PixelImage } from './types';
-import { ToolError } from './errors';
+import { createPixelImage, type PixelImage } from "./types";
+import { ToolError } from "./errors";
 
 const MAX_COLOR_DISTANCE = Math.sqrt(3 * 255 * 255);
 
 export function removeColorToAlpha(
 	img: PixelImage,
 	hex: string,
-	tolerancePercent = 0
+	tolerancePercent = 0,
 ): PixelImage {
 	const [targetR, targetG, targetB] = parseHex(hex);
-	const tolerance = (clamp(tolerancePercent, 0, 100) / 100) * MAX_COLOR_DISTANCE;
+	const tolerance =
+		(clamp(tolerancePercent, 0, 100) / 100) * MAX_COLOR_DISTANCE;
 	const thresholdSq = tolerance * tolerance;
-	const out: PixelImage = { width: img.width, height: img.height, data: img.data.slice() };
+	const out: PixelImage = {
+		width: img.width,
+		height: img.height,
+		data: img.data.slice(),
+	};
 	for (let i = 0; i < out.data.length; i += 4) {
 		const dr = out.data[i] - targetR;
 		const dg = out.data[i + 1] - targetG;
@@ -25,7 +30,11 @@ export function removeColorToAlpha(
 
 export function setAlphaChannel(img: PixelImage, percent: number): PixelImage {
 	const alpha = Math.round((clamp(percent, 0, 100) / 100) * 255);
-	const out: PixelImage = { width: img.width, height: img.height, data: img.data.slice() };
+	const out: PixelImage = {
+		width: img.width,
+		height: img.height,
+		data: img.data.slice(),
+	};
 	for (let i = 3; i < out.data.length; i += 4) {
 		out.data[i] = alpha;
 	}
@@ -44,10 +53,19 @@ export function extractAlphaMask(img: PixelImage): PixelImage {
 	return out;
 }
 
-export function roundCorners(img: PixelImage, radiusPercent: number): PixelImage {
-	const radius = (clamp(radiusPercent, 0, 50) / 100) * (Math.min(img.width, img.height) / 2);
-	if (radius < 1) return { width: img.width, height: img.height, data: img.data.slice() };
-	const out: PixelImage = { width: img.width, height: img.height, data: img.data.slice() };
+export function roundCorners(
+	img: PixelImage,
+	radiusPercent: number,
+): PixelImage {
+	const radius =
+		(clamp(radiusPercent, 0, 50) / 100) * (Math.min(img.width, img.height) / 2);
+	if (radius < 1)
+		return { width: img.width, height: img.height, data: img.data.slice() };
+	const out: PixelImage = {
+		width: img.width,
+		height: img.height,
+		data: img.data.slice(),
+	};
 	const r2 = radius * radius;
 	for (let y = 0; y < out.height; y++) {
 		for (let x = 0; x < out.width; x++) {
@@ -74,7 +92,10 @@ export function invertAlpha(img: PixelImage): PixelImage {
 	return out;
 }
 
-export function hardenAlpha(img: PixelImage, thresholdPercent: number): PixelImage {
+export function hardenAlpha(
+	img: PixelImage,
+	thresholdPercent: number,
+): PixelImage {
 	const threshold = (clamp(thresholdPercent, 0, 100) / 100) * 255;
 	const out = createPixelImage(img.width, img.height);
 	for (let i = 0; i < out.data.length; i += 4) {
@@ -86,9 +107,14 @@ export function hardenAlpha(img: PixelImage, thresholdPercent: number): PixelIma
 	return out;
 }
 
-export function colorMask(img: PixelImage, hex: string, tolerancePercent = 0): PixelImage {
+export function colorMask(
+	img: PixelImage,
+	hex: string,
+	tolerancePercent = 0,
+): PixelImage {
 	const [targetR, targetG, targetB] = parseHex(hex);
-	const tolerance = (clamp(tolerancePercent, 0, 100) / 100) * MAX_COLOR_DISTANCE;
+	const tolerance =
+		(clamp(tolerancePercent, 0, 100) / 100) * MAX_COLOR_DISTANCE;
 	const thresholdSq = tolerance * tolerance;
 	const out = createPixelImage(img.width, img.height);
 	for (let i = 0; i < out.data.length; i += 4) {
@@ -121,20 +147,20 @@ export function flattenOntoColor(img: PixelImage, hex: string): PixelImage {
 export function parseHex(hex: string): [number, number, number] {
 	const match = /^#?([0-9a-f]{3}|[0-9a-f]{6})$/i.exec(hex.trim());
 	if (!match) {
-		throw new ToolError('errors.badHex', { value: hex });
+		throw new ToolError("errors.badHex", { value: hex });
 	}
 	const digits = match[1];
 	if (digits.length === 3) {
 		return [
 			parseInt(digits[0] + digits[0], 16),
 			parseInt(digits[1] + digits[1], 16),
-			parseInt(digits[2] + digits[2], 16)
+			parseInt(digits[2] + digits[2], 16),
 		];
 	}
 	return [
 		parseInt(digits.slice(0, 2), 16),
 		parseInt(digits.slice(2, 4), 16),
-		parseInt(digits.slice(4, 6), 16)
+		parseInt(digits.slice(4, 6), 16),
 	];
 }
 

web/src/lib/core/analyze.test.ts

@@ -1,76 +1,87 @@
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from "vitest";
 import {
 	hasTransparency,
 	imageInfo,
 	isGrayscale,
-	orientationOf
-} from './analyze';
-import { makeImage } from './test-helpers';
+	orientationOf,
+} from "./analyze";
+import { makeImage } from "./test-helpers";
 
-describe('imageInfo', () => {
-	it('находит полупрозрачные пиксели и считает уникальные RGBA-цвета', () => {
+describe("imageInfo", () => {
+	it("находит полупрозрачные пиксели и считает уникальные RGBA-цвета", () => {
 		const info = imageInfo(
 			makeImage(2, 2, [
 				[0, 0, 0, 255],
 				[0, 0, 0, 255],
 				[255, 0, 0, 128],
-				[255, 0, 0, 128]
-			])
+				[255, 0, 0, 128],
+			]),
 		);
-		expect(info).toEqual({ width: 2, height: 2, hasAlpha: true, colorCount: 2 });
+		expect(info).toEqual({
+			width: 2,
+			height: 2,
+			hasAlpha: true,
+			colorCount: 2,
+		});
 	});
 
-	it('полностью непрозрачное изображение — hasAlpha false', () => {
+	it("полностью непрозрачное изображение — hasAlpha false", () => {
 		const info = imageInfo(
 			makeImage(2, 1, [
 				[10, 20, 30, 255],
-				[40, 50, 60, 255]
-			])
+				[40, 50, 60, 255],
+			]),
 		);
 		expect(info.hasAlpha).toBe(false);
 		expect(info.colorCount).toBe(2);
 	});
 
-	it('разная альфа означает разные цвета', () => {
+	it("разная альфа означает разные цвета", () => {
 		const info = imageInfo(
 			makeImage(2, 1, [
 				[255, 0, 0, 255],
-				[255, 0, 0, 128]
-			])
+				[255, 0, 0, 128],
+			]),
 		);
 		expect(info.hasAlpha).toBe(true);
 		expect(info.colorCount).toBe(2);
 	});
 
-	it('возвращает корректные размеры неквадрата', () => {
+	it("возвращает корректные размеры неквадрата", () => {
 		const info = imageInfo(makeImage(5, 3, new Array(15).fill([1, 2, 3, 4])));
 		expect(info.width).toBe(5);
 		expect(info.height).toBe(3);
 	});
 });
 
-describe('isGrayscale', () => {
-	it('серые пиксели — монохром', () => {
+describe("isGrayscale", () => {
+	it("серые пиксели — монохром", () => {
 		expect(isGrayscale(makeImage(1, 1, [[10, 10, 10, 255]]))).toBe(true);
 	});
-	it('цветной пиксель ломает монохром', () => {
+	it("цветной пиксель ломает монохром", () => {
 		expect(isGrayscale(makeImage(1, 1, [[10, 11, 10, 255]]))).toBe(false);
 	});
 });
 
-describe('hasTransparency', () => {
-	it('альфа ниже 255 — прозрачность есть', () => {
+describe("hasTransparency", () => {
+	it("альфа ниже 255 — прозрачность есть", () => {
 		expect(hasTransparency(makeImage(1, 1, [[0, 0, 0, 254]]))).toBe(true);
 	});
-	it('все пиксели непрозрачны', () => {
+	it("все пиксели непрозрачны", () => {
 		expect(hasTransparency(makeImage(1, 1, [[0, 0, 0, 255]]))).toBe(false);
 	});
 });
 
-describe('orientationOf', () => {
-	it('определяет ориентацию', () => {
-		expect(orientationOf(makeImage(2, 3, new Array(6).fill([1, 1, 1, 1])))).toBe('portrait');
-		expect(orientationOf(makeImage(3, 2, new Array(6).fill([1, 1, 1, 1])))).toBe('landscape');
-		expect(orientationOf(makeImage(2, 2, new Array(4).fill([1, 1, 1, 1])))).toBe('square');
+describe("orientationOf", () => {
+	it("определяет ориентацию", () => {
+		expect(
+			orientationOf(makeImage(2, 3, new Array(6).fill([1, 1, 1, 1]))),
+		).toBe("portrait");
+		expect(
+			orientationOf(makeImage(3, 2, new Array(6).fill([1, 1, 1, 1]))),
+		).toBe("landscape");
+		expect(
+			orientationOf(makeImage(2, 2, new Array(4).fill([1, 1, 1, 1]))),
+		).toBe("square");
 	});
-});
+});

web/src/lib/core/analyze.ts

@@ -1,4 +1,4 @@
-import type { PixelImage } from './types';
+import type { PixelImage } from "./types";
 
 export type ImageInfo = {
 	width: number;
@@ -22,12 +22,20 @@ export function imageInfo(img: PixelImage): ImageInfo {
 			0;
 		seen.add(key);
 	}
-	return { width: img.width, height: img.height, hasAlpha, colorCount: seen.size };
+	return {
+		width: img.width,
+		height: img.height,
+		hasAlpha,
+		colorCount: seen.size,
+	};
 }
 
 export function isGrayscale(img: PixelImage): boolean {
 	for (let i = 0; i < img.data.length; i += 4) {
-		if (img.data[i] !== img.data[i + 1] || img.data[i + 1] !== img.data[i + 2]) {
+		if (
+			img.data[i] !== img.data[i + 1] ||
+			img.data[i + 1] !== img.data[i + 2]
+		) {
 			return false;
 		}
 	}
@@ -41,10 +49,10 @@ export function hasTransparency(img: PixelImage): boolean {
 	return false;
 }
 
-export type Orientation = 'portrait' | 'landscape' | 'square';
+export type Orientation = "portrait" | "landscape" | "square";
 
 export function orientationOf(img: PixelImage): Orientation {
-	if (img.height > img.width) return 'portrait';
-	if (img.width > img.height) return 'landscape';
-	return 'square';
+	if (img.height > img.width) return "portrait";
+	if (img.width > img.height) return "landscape";
+	return "square";
 }

web/src/lib/core/background.test.ts

@@ -1,108 +1,119 @@
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from "vitest";
 import {
 	backgroundMaskPreview,
 	backgroundRemovalMask,
-	removeBackground
-} from './background';
-import { makeImage } from './test-helpers';
+	removeBackground,
+} from "./background";
+import { makeImage } from "./test-helpers";
 
 const GREEN = [0, 255, 0, 255];
 const RED = [255, 0, 0, 255];
 
-describe('backgroundRemovalMask', () => {
-	it('глобальный режим удаляет все совпадающие пиксели', () => {
-		const mask = backgroundRemovalMask(
-			makeImage(2, 1, [GREEN, RED]),
-			{ color: '#00ff00', tolerancePercent: 0, outerOnly: false, smoothPasses: 0 }
-		);
+describe("backgroundRemovalMask", () => {
+	it("глобальный режим удаляет все совпадающие пиксели", () => {
+		const mask = backgroundRemovalMask(makeImage(2, 1, [GREEN, RED]), {
+			color: "#00ff00",
+			tolerancePercent: 0,
+			outerOnly: false,
+			smoothPasses: 0,
+		});
 		expect([...mask]).toEqual([1, 0]);
 	});
 
-describe('режим внешних областей', () => {
-	const ringRedCenterGreen = [
-		RED, RED, RED,
-		RED, GREEN, RED,
-		RED, RED, RED
-	];
+	describe("режим внешних областей", () => {
+		const ringRedCenterGreen = [RED, RED, RED, RED, GREEN, RED, RED, RED, RED];
 
-	it('заливка от краёв не достаёт до изолированного совпадающего острова', () => {
-		const mask = backgroundRemovalMask(
-			makeImage(3, 3, ringRedCenterGreen),
-			{ color: '#00ff00', tolerancePercent: 0, outerOnly: true, smoothPasses: 0 }
-		);
-		expect(mask[4]).toBe(0);
+		it("заливка от краёв не достаёт до изолированного совпадающего острова", () => {
+			const mask = backgroundRemovalMask(makeImage(3, 3, ringRedCenterGreen), {
+				color: "#00ff00",
+				tolerancePercent: 0,
+				outerOnly: true,
+				smoothPasses: 0,
+			});
+			expect(mask[4]).toBe(0);
+		});
+
+		it("глобальный режим удаляет и изолированный остров", () => {
+			const mask = backgroundRemovalMask(makeImage(3, 3, ringRedCenterGreen), {
+				color: "#00ff00",
+				tolerancePercent: 0,
+				outerOnly: false,
+				smoothPasses: 0,
+			});
+			expect(mask[4]).toBe(1);
+			expect(mask[0]).toBe(0);
+		});
 	});
 
-	it('глобальный режим удаляет и изолированный остров', () => {
-		const mask = backgroundRemovalMask(
-			makeImage(3, 3, ringRedCenterGreen),
-			{ color: '#00ff00', tolerancePercent: 0, outerOnly: false, smoothPasses: 0 }
-		);
-		expect(mask[4]).toBe(1);
-		expect(mask[0]).toBe(0);
-	});
-});
-
-	it('допуск расширяет захват по цветовому расстоянию', () => {
+	it("допуск расширяет захват по цветовому расстоянию", () => {
 		const img = makeImage(2, 1, [
 			[10, 10, 10, 255],
-			[128, 128, 128, 255]
+			[128, 128, 128, 255],
 		]);
 		const tight = backgroundRemovalMask(img, {
-			color: '#000000', tolerancePercent: 40, outerOnly: false, smoothPasses: 0
+			color: "#000000",
+			tolerancePercent: 40,
+			outerOnly: false,
+			smoothPasses: 0,
 		});
 		const wide = backgroundRemovalMask(img, {
-			color: '#000000', tolerancePercent: 60, outerOnly: false, smoothPasses: 0
+			color: "#000000",
+			tolerancePercent: 60,
+			outerOnly: false,
+			smoothPasses: 0,
 		});
 		expect(tight[1]).toBe(0);
 		expect(wide[1]).toBe(1);
 	});
 });
 
-describe('smoothMask-поведение через backgroundRemovalMask', () => {
-	const ringRedCenterGreen = [
-		RED, RED, RED,
-		RED, GREEN, RED,
-		RED, RED, RED
-	];
-	const opts = { color: '#00ff00', tolerancePercent: 0, outerOnly: false };
+describe("smoothMask-поведение через backgroundRemovalMask", () => {
+	const ringRedCenterGreen = [RED, RED, RED, RED, GREEN, RED, RED, RED, RED];
+	const opts = { color: "#00ff00", tolerancePercent: 0, outerOnly: false };
 
 	const alphaAtCenter = (img: { data: Uint8ClampedArray }) => img.data[19];
 
-	it('без сглаживания центр удалён', () => {
-		const img = removeBackground(makeImage(3, 3, ringRedCenterGreen), { ...opts, smoothPasses: 0 });
+	it("без сглаживания центр удалён", () => {
+		const img = removeBackground(makeImage(3, 3, ringRedCenterGreen), {
+			...opts,
+			smoothPasses: 0,
+		});
 		expect(alphaAtCenter(img)).toBe(0);
 	});
 
-	it('два прохода мажоритарного фильтра возвращают изолированный пиксель', () => {
-		const img = removeBackground(makeImage(3, 3, ringRedCenterGreen), { ...opts, smoothPasses: 2 });
+	it("два прохода мажоритарного фильтра возвращают изолированный пиксель", () => {
+		const img = removeBackground(makeImage(3, 3, ringRedCenterGreen), {
+			...opts,
+			smoothPasses: 2,
+		});
 		expect(alphaAtCenter(img)).toBe(255);
 	});
 });
 
-describe('removeBackground', () => {
-	it('обнуляет альфу удалённых, сохраняет RGB остальных', () => {
-		const out = removeBackground(
-			makeImage(2, 1, [GREEN, [5, 6, 7, 200]]),
-			{ color: '#00ff00', tolerancePercent: 0, outerOnly: false, smoothPasses: 0 }
-		);
+describe("removeBackground", () => {
+	it("обнуляет альфу удалённых, сохраняет RGB остальных", () => {
+		const out = removeBackground(makeImage(2, 1, [GREEN, [5, 6, 7, 200]]), {
+			color: "#00ff00",
+			tolerancePercent: 0,
+			outerOnly: false,
+			smoothPasses: 0,
+		});
 		expect(out.data[3]).toBe(0);
 		expect([...out.data.slice(4, 8)]).toEqual([5, 6, 7, 200]);
 	});
 });
 
-describe('backgroundMaskPreview', () => {
-	it('белое там, где удаление, чёрное — где остаёмся, всё непрозрачно', () => {
+describe("backgroundMaskPreview", () => {
+	it("белое там, где удаление, чёрное — где остаёмся, всё непрозрачно", () => {
 		const preview = backgroundMaskPreview(
-			makeImage(2, 1, [
-				GREEN,
-				[9, 9, 9, 60]
-			]),
-			{ color: '#00ff00', tolerancePercent: 0, outerOnly: false, smoothPasses: 0 }
+			makeImage(2, 1, [GREEN, [9, 9, 9, 60]]),
+			{
+				color: "#00ff00",
+				tolerancePercent: 0,
+				outerOnly: false,
+				smoothPasses: 0,
+			},
 		);
-		expect([...preview.data]).toEqual([
-			255, 255, 255, 255,
-			0, 0, 0, 255
-		]);
+		expect([...preview.data]).toEqual([255, 255, 255, 255, 0, 0, 0, 255]);
 	});
 });

web/src/lib/core/background.ts

@@ -1,5 +1,5 @@
-import { parseHex } from './alpha';
-import { createPixelImage, type PixelImage } from './types';
+import { parseHex } from "./alpha";
+import { createPixelImage, type PixelImage } from "./types";
 
 export type BackgroundOptions = {
 	color: string;
@@ -13,9 +13,10 @@ function buildRawMask(
 	targetR: number,
 	targetG: number,
 	targetB: number,
-	tolerancePercent: number
+	tolerancePercent: number,
 ): Uint8Array {
-	const tolerance = (clamp(tolerancePercent, 0, 100) / 100) * Math.sqrt(3 * 255 * 255);
+	const tolerance =
+		(clamp(tolerancePercent, 0, 100) / 100) * Math.sqrt(3 * 255 * 255);
 	const thresholdSq = tolerance * tolerance;
 	const mask = new Uint8Array(img.width * img.height);
 	for (let i = 0; i < mask.length; i++) {
@@ -61,7 +62,7 @@ export function smoothMask(
 	mask: Uint8Array,
 	w: number,
 	h: number,
-	passes: number
+	passes: number,
 ): Uint8Array {
 	let current = mask;
 	const count = clamp(Math.trunc(passes), 0, 8);
@@ -89,7 +90,7 @@ export function smoothMask(
 
 export function backgroundRemovalMask(
 	img: PixelImage,
-	options: BackgroundOptions
+	options: BackgroundOptions,
 ): Uint8Array {
 	const [tr, tg, tb] = parseHex(options.color);
 	const mask = buildRawMask(img, tr, tg, tb, options.tolerancePercent);
@@ -99,7 +100,10 @@ export function backgroundRemovalMask(
 	return smoothMask(mask, img.width, img.height, options.smoothPasses);
 }
 
-export function removeBackground(img: PixelImage, options: BackgroundOptions): PixelImage {
+export function removeBackground(
+	img: PixelImage,
+	options: BackgroundOptions,
+): PixelImage {
 	const mask = backgroundRemovalMask(img, options);
 	const out = createPixelImage(img.width, img.height);
 	for (let i = 0; i < mask.length; i++) {
@@ -112,7 +116,10 @@ export function removeBackground(img: PixelImage, options: BackgroundOptions): P
 	return out;
 }
 
-export function backgroundMaskPreview(img: PixelImage, options: BackgroundOptions): PixelImage {
+export function backgroundMaskPreview(
+	img: PixelImage,
+	options: BackgroundOptions,
+): PixelImage {
 	const mask = backgroundRemovalMask(img, options);
 	const out = createPixelImage(img.width, img.height);
 	for (let i = 0; i < mask.length; i++) {

web/src/lib/core/bmp.test.ts

@@ -1,14 +1,14 @@
-import { describe, expect, it } from 'vitest';
-import { encodeBmpBytes } from './bmp';
-import { makeImage } from './test-helpers';
+import { describe, expect, it } from "vitest";
+import { encodeBmpBytes } from "./bmp";
+import { makeImage } from "./test-helpers";
 
-describe('encodeBmpBytes', () => {
-	it('пишет заголовки BM и размеры для 2x1 без паддинга-неопределённости', () => {
+describe("encodeBmpBytes", () => {
+	it("пишет заголовки BM и размеры для 2x1 без паддинга-неопределённости", () => {
 		const bytes = encodeBmpBytes(
 			makeImage(2, 1, [
 				[255, 0, 0, 255],
-				[0, 255, 0, 255]
-			])
+				[0, 255, 0, 255],
+			]),
 		);
 		expect([bytes[0], bytes[1]]).toEqual([0x42, 0x4d]);
 		const view = new DataView(bytes.buffer);
@@ -18,22 +18,19 @@ describe('encodeBmpBytes', () => {
 		expect(view.getUint16(28, true)).toBe(24);
 	});
 
-	it('хранит пиксели в BGR снизу-вверх с паддингом строки', () => {
+	it("хранит пиксели в BGR снизу-вверх с паддингом строки", () => {
 		const bytes = encodeBmpBytes(
 			makeImage(2, 1, [
 				[255, 0, 0, 255],
-				[0, 255, 0, 255]
-			])
+				[0, 255, 0, 255],
+			]),
 		);
-		expect([...bytes.slice(54, 60)]).toEqual([
-			0, 0, 255,
-			0, 255, 0
-		]);
+		expect([...bytes.slice(54, 60)]).toEqual([0, 0, 255, 0, 255, 0]);
 		expect(bytes[60]).toBe(0);
 		expect(bytes[61]).toBe(0);
 	});
 
-	it('нижняя строка изображения идёт первой в файле', () => {
+	it("нижняя строка изображения идёт первой в файле", () => {
 		const bytes = encodeBmpBytes(
 			makeImage(4, 2, [
 				[10, 10, 10, 255],
@@ -43,8 +40,8 @@ describe('encodeBmpBytes', () => {
 				[50, 50, 50, 255],
 				[60, 60, 60, 255],
 				[70, 70, 70, 255],
-				[80, 80, 80, 255]
-			])
+				[80, 80, 80, 255],
+			]),
 		);
 		expect(bytes[54]).toBe(50);
 		expect(bytes[54 + 12]).toBe(10);

web/src/lib/core/bmp.ts

@@ -1,4 +1,4 @@
-import type { PixelImage } from './types';
+import type { PixelImage } from "./types";
 
 export function encodeBmpBytes(img: PixelImage): Uint8Array<ArrayBuffer> {
 	const rowSize = Math.ceil((img.width * 3) / 4) * 4;

web/src/lib/core/channels.test.ts

@@ -1,41 +1,41 @@
-import { describe, expect, it } from 'vitest';
-import { hexToRgb } from './palette';
-import { renderSpace, SPACES } from './channels';
-import { makeImage } from './test-helpers';
+import { describe, expect, it } from "vitest";
+import { hexToRgb } from "./palette";
+import { renderSpace, SPACES } from "./channels";
+import { makeImage } from "./test-helpers";
 
-describe('преобразования пространств', () => {
-	it('hsl красного: h=0, s=1, l=0.5', () => {
-		const [h, s, l] = SPACES.hsl.convert(hexToRgb('#ff0000'));
+describe("преобразования пространств", () => {
+	it("hsl красного: h=0, s=1, l=0.5", () => {
+		const [h, s, l] = SPACES.hsl.convert(hexToRgb("#ff0000"));
 		expect(h).toBeCloseTo(0);
 		expect(s).toBeCloseTo(1);
 		expect(l).toBeCloseTo(0.5);
 	});
 
-	it('hsv белого: v=1, чёрного: v=0', () => {
+	it("hsv белого: v=1, чёрного: v=0", () => {
 		expect(SPACES.hsv.convert({ r: 255, g: 255, b: 255 })[2]).toBeCloseTo(1);
 		expect(SPACES.hsv.convert({ r: 0, g: 0, b: 0 })[2]).toBe(0);
 	});
 
-	it('hsi серого: s=0', () => {
+	it("hsi серого: s=0", () => {
 		const [, s] = SPACES.hsi.convert({ r: 128, g: 128, b: 128 });
 		expect(s).toBeCloseTo(0);
 	});
 
-	it('cmyk: белый — 0,0,0,0; чёрный — 0,0,0,1', () => {
+	it("cmyk: белый — 0,0,0,0; чёрный — 0,0,0,1", () => {
 		const w = SPACES.cmyk.convert({ r: 255, g: 255, b: 255 });
 		const b = SPACES.cmyk.convert({ r: 0, g: 0, b: 0 });
 		expect(w.every((v) => Math.abs(v) < 1e-9)).toBe(true);
 		expect(b[3]).toBeCloseTo(1);
 	});
 
-	it('ycbcr белого: y≈1, cb≈cr≈0.5', () => {
+	it("ycbcr белого: y≈1, cb≈cr≈0.5", () => {
 		const [y, cb, cr] = SPACES.ycbcr.convert({ r: 255, g: 255, b: 255 });
 		expect(y).toBeCloseTo(1);
 		expect(cb).toBeCloseTo(0.5, 2);
 		expect(cr).toBeCloseTo(0.5, 2);
 	});
 
-	it('lab белого: l≈1, a≈b≈0.5 (центр)', () => {
+	it("lab белого: l≈1, a≈b≈0.5 (центр)", () => {
 		const [l, a, bb] = SPACES.lab.convert({ r: 255, g: 255, b: 255 });
 		expect(l).toBeCloseTo(1, 2);
 		expect(a).toBeCloseTo(0.5, 2);
@@ -43,23 +43,25 @@ describe('преобразования пространств', () => {
 	});
 });
 
-describe('renderSpace', () => {
+describe("renderSpace", () => {
 	const red = makeImage(1, 1, [[255, 0, 0, 255]]);
 
-	it('gray-режим: компонент y (жёлтый) чистого красного = белый', () => {
-		const out = renderSpace(red, 'cmyk', 'y', 'gray');
+	it("gray-режим: компонент y (жёлтый) чистого красного = белый", () => {
+		const out = renderSpace(red, "cmyk", "y", "gray");
 		expect([...out.data]).toEqual([255, 255, 255, 255]);
 	});
 
-	it('color-режим hsl красного: каналы = тон/насыщенность/светлота', () => {
-		const out = renderSpace(red, 'hsl', 's', 'color');
+	it("color-режим hsl красного: каналы = тон/насыщенность/светлота", () => {
+		const out = renderSpace(red, "hsl", "s", "color");
 		expect(out.data[0]).toBe(0);
 		expect(out.data[1]).toBe(255);
 		expect(out.data[2]).toBeGreaterThanOrEqual(127);
 	});
 
-	it('неизвестное пространство или компонент дают прозрачную заглушку', () => {
+	it("неизвестное пространство или компонент дают прозрачную заглушку", () => {
 		const junk = makeImage(1, 1, [[10, 20, 30, 255]]);
-		expect(renderSpace(junk, 'cmyk' as never, 'zz' as never, 'gray').data[3]).toBe(0);
+		expect(
+			renderSpace(junk, "cmyk" as never, "zz" as never, "gray").data[3],
+		).toBe(0);
 	});
 });

web/src/lib/core/channels.ts

@@ -1,12 +1,12 @@
-import type { PixelImage } from './types';
-import { createPixelImage } from './types';
-import { rgbToHsl } from './palette';
-import type { Rgb } from './palette';
+import type { PixelImage } from "./types";
+import { createPixelImage } from "./types";
+import { rgbToHsl } from "./palette";
+import type { Rgb } from "./palette";
 
 /** Все компоненты нормализованы в 0..1 в порядке объявления. */
 export type SpaceComponents = number[];
 
-export type SpaceId = 'hsl' | 'hsv' | 'hsi' | 'cmyk' | 'ycbcr' | 'lab';
+export type SpaceId = "hsl" | "hsv" | "hsi" | "cmyk" | "ycbcr" | "lab";
 
 function hueOf({ r, g, b }: Rgb): number {
 	const max = Math.max(r, g, b);
@@ -47,7 +47,12 @@ function rgbToCmyk({ r, g, b }: Rgb): [number, number, number, number] {
 	const bn = b / 255;
 	const k = 1 - Math.max(rn, gn, bn);
 	if (k === 1) return [0, 0, 0, 1];
-	return [(1 - rn - k) / (1 - k), (1 - gn - k) / (1 - k), (1 - bn - k) / (1 - k), k];
+	return [
+		(1 - rn - k) / (1 - k),
+		(1 - gn - k) / (1 - k),
+		(1 - bn - k) / (1 - k),
+		k,
+	];
 }
 
 function rgbToYcbcr({ r, g, b }: Rgb): [number, number, number] {
@@ -71,27 +76,34 @@ function rgbToLab({ r, g, b }: Rgb): [number, number, number] {
 	const fy = f(y);
 	const fz = f(z);
 	// L нормирован 0..1; a/b центрированы на 0.5 с размахом ±0.5
-	return [(116 * fy - 16) / 100, (500 * (fx - fy)) / 250 + 0.5, (200 * (fy - fz)) / 250 + 0.5];
+	return [
+		(116 * fy - 16) / 100,
+		(500 * (fx - fy)) / 250 + 0.5,
+		(200 * (fy - fz)) / 250 + 0.5,
+	];
 }
 
-type SpaceDef = { components: string[]; convert: (rgb: Rgb) => SpaceComponents };
+type SpaceDef = {
+	components: string[];
+	convert: (rgb: Rgb) => SpaceComponents;
+};
 
 export const SPACES: Record<SpaceId, SpaceDef> = {
 	hsl: {
-		components: ['h', 's', 'l'],
+		components: ["h", "s", "l"],
 		convert: ({ r, g, b }) => {
 			const { h, s, l } = rgbToHsl({ r, g, b });
 			return [h / 360, s, l];
-		}
+		},
 	},
-	hsv: { components: ['h', 's', 'v'], convert: rgbToHsv },
-	hsi: { components: ['h', 's', 'i'], convert: rgbToHsi },
-	cmyk: { components: ['c', 'm', 'y', 'k'], convert: rgbToCmyk },
-	ycbcr: { components: ['y', 'cb', 'cr'], convert: rgbToYcbcr },
-	lab: { components: ['l', 'a', 'b'], convert: rgbToLab }
+	hsv: { components: ["h", "s", "v"], convert: rgbToHsv },
+	hsi: { components: ["h", "s", "i"], convert: rgbToHsi },
+	cmyk: { components: ["c", "m", "y", "k"], convert: rgbToCmyk },
+	ycbcr: { components: ["y", "cb", "cr"], convert: rgbToYcbcr },
+	lab: { components: ["l", "a", "b"], convert: rgbToLab },
 };
 
-export type ChannelDisplay = 'gray' | 'color';
+export type ChannelDisplay = "gray" | "color";
 
 /**
  * Визуализация выбранного пространства: каждый компонент пространства
@@ -102,7 +114,7 @@ export function renderSpace(
 	img: PixelImage,
 	space: SpaceId,
 	component: string,
-	display: ChannelDisplay
+	display: ChannelDisplay,
 ): PixelImage {
 	const def = SPACES[space];
 	if (!def) return createPixelImage(img.width, img.height);
@@ -110,10 +122,14 @@ export function renderSpace(
 	if (idx < 0) return createPixelImage(img.width, img.height);
 	const out = createPixelImage(img.width, img.height);
 	for (let i = 0; i < img.data.length; i += 4) {
-		const comps = def.convert({ r: img.data[i], g: img.data[i + 1], b: img.data[i + 2] });
+		const comps = def.convert({
+			r: img.data[i],
+			g: img.data[i + 1],
+			b: img.data[i + 2],
+		});
 		const di = i;
 		out.data[di + 3] = img.data[i + 3];
-		if (display === 'gray') {
+		if (display === "gray") {
 			const v = comps[idx] * 255;
 			out.data[di] = v;
 			out.data[di + 1] = v;

web/src/lib/core/color.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from "vitest";
 import {
 	autoContrast,
 	brightnessContrast,
@@ -15,39 +15,43 @@ import {
 	temperature,
 	tint,
 	thresholdBlackWhite,
-	twoColors
-} from './color';
-import { makeImage } from './test-helpers';
+	twoColors,
+} from "./color";
+import { makeImage } from "./test-helpers";
 
-describe('rgbToHex', () => {
-	it('форматирует базовые цвета', () => {
-		expect(rgbToHex(255, 0, 0)).toBe('#ff0000');
-		expect(rgbToHex(1, 2, 3)).toBe('#010203');
+describe("rgbToHex", () => {
+	it("форматирует базовые цвета", () => {
+		expect(rgbToHex(255, 0, 0)).toBe("#ff0000");
+		expect(rgbToHex(1, 2, 3)).toBe("#010203");
 	});
 
-	it('округляет дробные значения и клампит диапазон', () => {
-		expect(rgbToHex(127.6, -5, 300)).toBe('#8000ff');
+	it("округляет дробные значения и клампит диапазон", () => {
+		expect(rgbToHex(127.6, -5, 300)).toBe("#8000ff");
 	});
 });
 
-describe('setOpacity', () => {
-	it('умножает альфу на процент, RGB не трогает', () => {
+describe("setOpacity", () => {
+	it("умножает альфу на процент, RGB не трогает", () => {
 		const out = setOpacity(makeImage(1, 1, [[10, 20, 30, 128]]), 50);
 		expect([...out.data]).toEqual([10, 20, 30, 64]);
 	});
 
-	it('100% не меняет, 0% делает полностью прозрачным', () => {
-		expect(setOpacity(makeImage(1, 1, [[1, 2, 3, 200]]), 100).data[3]).toBe(200);
+	it("100% не меняет, 0% делает полностью прозрачным", () => {
+		expect(setOpacity(makeImage(1, 1, [[1, 2, 3, 200]]), 100).data[3]).toBe(
+			200,
+		);
 		expect(setOpacity(makeImage(1, 1, [[1, 2, 3, 200]]), 0).data[3]).toBe(0);
 	});
 });
 
-describe('sepia', () => {
-	it('применяет классическую матрицу с клампом', () => {
-		const out = sepia(makeImage(2, 1, [
-			[255, 0, 0, 255],
-			[255, 255, 255, 255]
-		]));
+describe("sepia", () => {
+	it("применяет классическую матрицу с клампом", () => {
+		const out = sepia(
+			makeImage(2, 1, [
+				[255, 0, 0, 255],
+				[255, 255, 255, 255],
+			]),
+		);
 		const px = (n: number) => [...out.data.slice(n * 4, n * 4 + 4)];
 		expect(px(0)).toEqual([100, 89, 69, 255]);
 		expect(px(1)[0]).toBe(255);
@@ -55,81 +59,85 @@ describe('sepia', () => {
 	});
 });
 
-describe('changeHue', () => {
-	it('чистый красный при +120° становится чистым зелёным', () => {
+describe("changeHue", () => {
+	it("чистый красный при +120° становится чистым зелёным", () => {
 		const out = changeHue(makeImage(1, 1, [[255, 0, 0, 255]]), 120);
 		expect([...out.data]).toEqual([0, 255, 0, 255]);
 	});
 
-	it('сдвиг 360° возвращает исходные цвета', () => {
+	it("сдвиг 360° возвращает исходные цвета", () => {
 		const img = makeImage(1, 1, [[90, 140, 210, 255]]);
 		expect([...changeHue(img, 360).data]).toEqual([...img.data]);
 	});
 });
 
-describe('extractChannel', () => {
-	it('выдаёт выбранный канал оттенками серого', () => {
-		const out = extractChannel(makeImage(1, 1, [[10, 20, 30, 40]]), 'green');
+describe("extractChannel", () => {
+	it("выдаёт выбранный канал оттенками серого", () => {
+		const out = extractChannel(makeImage(1, 1, [[10, 20, 30, 40]]), "green");
 		expect([...out.data]).toEqual([20, 20, 20, 40]);
 	});
 });
 
-describe('swapChannels', () => {
-	it('переставляет каналы парами', () => {
-		expect([...swapChannels(makeImage(1, 1, [[10, 20, 30, 40]]), 'r-b').data]).toEqual([
-			30, 20, 10, 40
-		]);
-		expect([...swapChannels(makeImage(1, 1, [[10, 20, 30, 40]]), 'g-b').data]).toEqual([
-			10, 30, 20, 40
-		]);
+describe("swapChannels", () => {
+	it("переставляет каналы парами", () => {
+		expect([
+			...swapChannels(makeImage(1, 1, [[10, 20, 30, 40]]), "r-b").data,
+		]).toEqual([30, 20, 10, 40]);
+		expect([
+			...swapChannels(makeImage(1, 1, [[10, 20, 30, 40]]), "g-b").data,
+		]).toEqual([10, 30, 20, 40]);
 	});
 });
 
-describe('thresholdBlackWhite', () => {
-	it('серый 128 относительно порога 50% — белый', () => {
-		expect(thresholdBlackWhite(makeImage(1, 1, [[128, 128, 128, 255]]), 50).data[0]).toBe(255);
-		expect(thresholdBlackWhite(makeImage(1, 1, [[128, 128, 128, 255]]), 60).data[0]).toBe(0);
+describe("thresholdBlackWhite", () => {
+	it("серый 128 относительно порога 50% — белый", () => {
+		expect(
+			thresholdBlackWhite(makeImage(1, 1, [[128, 128, 128, 255]]), 50).data[0],
+		).toBe(255);
+		expect(
+			thresholdBlackWhite(makeImage(1, 1, [[128, 128, 128, 255]]), 60).data[0],
+		).toBe(0);
 	});
 });
 
-describe('posterize', () => {
-	it('два уровня квантуют в чёрное и белое', () => {
+describe("posterize", () => {
+	it("два уровня квантуют в чёрное и белое", () => {
 		const out = posterize(
 			makeImage(2, 1, [
 				[100, 100, 100, 255],
-				[200, 200, 200, 255]
+				[200, 200, 200, 255],
 			]),
-			2
+			2,
 		);
 		expect(out.data[0]).toBe(0);
 		expect(out.data[4]).toBe(255);
 	});
 });
 
-describe('twoColors', () => {
-	it('яркие пиксели получают светлый цвет, тёмные — тёмный', () => {
+describe("twoColors", () => {
+	it("яркие пиксели получают светлый цвет, тёмные — тёмный", () => {
 		const out = twoColors(
 			makeImage(2, 1, [
 				[250, 250, 250, 255],
-				[10, 10, 10, 128]
+				[10, 10, 10, 128],
 			]),
-			'#ff0000',
-			'#00ff00',
-			50
+			"#ff0000",
+			"#00ff00",
+			50,
 		);
 		expect([...out.data.slice(0, 4)]).toEqual([255, 0, 0, 255]);
 		expect([...out.data.slice(4, 8)]).toEqual([0, 255, 0, 128]);
 	});
 });
 
-describe('grayscale', () => {
-	it('считает luma по весам BT.601 с округлением', () => {
+describe("grayscale", () => {
+	it("считает luma по весам BT.601 с округлением", () => {
 		const out = grayscale(
 			makeImage(3, 1, [
 				[255, 0, 0, 255],
 				[0, 255, 0, 255],
-				[0, 0, 255, 255]
-			])
+				[0, 0, 255, 255],
+			]),
 		);
 		const rgb = [...out.data].reduce<number[]>((acc, v, i) => {
 			if (i % 4 === 0) acc.push(v);
@@ -138,7 +146,7 @@ describe('grayscale', () => {
 		expect(rgb).toEqual([76, 150, 29]);
 	});
 
-	it('сохраняет альфу и не мутирует вход', () => {
+	it("сохраняет альфу и не мутирует вход", () => {
 		const img = makeImage(1, 1, [[10, 20, 30, 200]]);
 		const out = grayscale(img);
 		expect([...out.data]).toEqual([18, 18, 18, 200]);
@@ -146,89 +154,91 @@ describe('grayscale', () => {
 	});
 });
 
-describe('invert', () => {
-	it('инвертирует RGB, не трогая альфу', () => {
+describe("invert", () => {
+	it("инвертирует RGB, не трогая альфу", () => {
 		const out = invert(makeImage(1, 1, [[10, 200, 30, 7]]));
 		expect([...out.data]).toEqual([245, 55, 225, 7]);
 	});
 });
 
-describe('brightnessContrast', () => {
+describe("brightnessContrast", () => {
 	const pixel = (r: number) => makeImage(1, 1, [[r, r, r, 255]]);
 	const red = (out: number[]) => [out[0], out[1], out[2]];
 
-	it('b=0, c=0 — тождественное преобразование', () => {
+	it("b=0, c=0 — тождественное преобразование", () => {
 		const out = brightnessContrast(pixel(77), 0, 0);
 		expect(red([...out.data])).toEqual([77, 77, 77]);
 	});
 
-	it('brightness +100 насыщает всё в белый', () => {
+	it("brightness +100 насыщает всё в белый", () => {
 		const out = brightnessContrast(pixel(10), 100, 0);
 		expect(red([...out.data])).toEqual([255, 255, 255]);
 	});
 
-	it('brightness -100 заливает чёрным', () => {
+	it("brightness -100 заливает чёрным", () => {
 		const out = brightnessContrast(pixel(240), -100, 0);
 		expect(red([...out.data])).toEqual([0, 0, 0]);
 	});
 
-	it('contrast -100 сводит всё к серому 128', () => {
+	it("contrast -100 сводит всё к серому 128", () => {
 		const out = brightnessContrast(pixel(30), 0, -100);
 		expect(red([...out.data])).toEqual([128, 128, 128]);
 	});
 
-	it('параметры вне диапазона клампятся', () => {
+	it("параметры вне диапазона клампятся", () => {
 		const out = brightnessContrast(pixel(10), 150, 0);
 		expect(red([...out.data])).toEqual([255, 255, 255]);
 	});
 
-	it('альфа не меняется', () => {
+	it("альфа не меняется", () => {
 		const out = brightnessContrast(makeImage(1, 1, [[10, 20, 30, 64]]), 50, 50);
 		expect(out.data[3]).toBe(64);
 	});
 });
 
-describe('gammaCorrection', () => {
-	it('гамма 1 — идентичность', () => {
+describe("gammaCorrection", () => {
+	it("гамма 1 — идентичность", () => {
 		const img = makeImage(1, 1, [[64, 128, 192, 255]]);
 		expect([...gammaCorrection(img, 1).data]).toEqual([64, 128, 192, 255]);
 	});
-	it('гамма 2 удваивает яркость (64 → 128)', () => {
+	it("гамма 2 удваивает яркость (64 → 128)", () => {
 		const out = gammaCorrection(makeImage(1, 1, [[64, 64, 64, 255]]), 2);
 		expect(out.data[0]).toBe(128);
 	});
 });
 
-describe('autoContrast', () => {
-	it('растягивает диапазон [10..200] до [0..255]', () => {
-		const out = autoContrast(makeImage(2, 1, [
-			[10, 10, 10, 255],
-			[200, 200, 200, 255]
-		]));
+describe("autoContrast", () => {
+	it("растягивает диапазон [10..200] до [0..255]", () => {
+		const out = autoContrast(
+			makeImage(2, 1, [
+				[10, 10, 10, 255],
+				[200, 200, 200, 255],
+			]),
+		);
 		expect(out.data[0]).toBe(0);
 		expect(out.data[4]).toBe(255);
 	});
 });
 
-describe('temperature', () => {
-	it('положительная — теплее (красный ↑, синий ↓)', () => {
+describe("temperature", () => {
+	it("положительная — теплее (красный ↑, синий ↓)", () => {
 		const out = temperature(makeImage(1, 1, [[128, 128, 128, 255]]), 50);
 		expect(out.data[0]).toBeGreaterThan(128);
 		expect(out.data[2]).toBeLessThan(128);
 	});
-	it('нулевая температура не меняет', () => {
+	it("нулевая температура не меняет", () => {
 		const img = makeImage(1, 1, [[128, 128, 128, 255]]);
 		expect([...temperature(img, 0).data]).toEqual([...img.data]);
 	});
 });
 
-describe('tint', () => {
-	it('сила 100 на белом даёт чистый цвет', () => {
-		const out = tint(makeImage(1, 1, [[255, 255, 255, 255]]), '#ff0000', 100);
+describe("tint", () => {
+	it("сила 100 на белом даёт чистый цвет", () => {
+		const out = tint(makeImage(1, 1, [[255, 255, 255, 255]]), "#ff0000", 100);
 		expect([...out.data]).toEqual([255, 0, 0, 255]);
 	});
-	it('сила 0 — идентичность', () => {
+	it("сила 0 — идентичность", () => {
 		const img = makeImage(1, 1, [[100, 150, 200, 255]]);
-		expect([...tint(img, '#ff0000', 0).data]).toEqual([...img.data]);
+		expect([...tint(img, "#ff0000", 0).data]).toEqual([...img.data]);
 	});
-});
+});

web/src/lib/core/color.ts

@@ -1,9 +1,9 @@
-import { clonePixelImage, createPixelImage, type PixelImage } from './types';
-import { ToolError } from './errors';
+import { clonePixelImage, createPixelImage, type PixelImage } from "./types";
+import { ToolError } from "./errors";
 
-export type RgbChannel = 'red' | 'green' | 'blue';
+export type RgbChannel = "red" | "green" | "blue";
 
-export type ChannelSwapPair = 'r-g' | 'r-b' | 'g-b';
+export type ChannelSwapPair = "r-g" | "r-b" | "g-b";
 
 export function setOpacity(img: PixelImage, percent: number): PixelImage {
 	const factor = clamp(percent, 0, 100) / 100;
@@ -74,7 +74,10 @@ function hueComponent(p: number, q: number, t: number): number {
 
 const CHANNEL_INDEX: Record<RgbChannel, number> = { red: 0, green: 1, blue: 2 };
 
-export function extractChannel(img: PixelImage, channel: RgbChannel): PixelImage {
+export function extractChannel(
+	img: PixelImage,
+	channel: RgbChannel,
+): PixelImage {
 	const index = CHANNEL_INDEX[channel];
 	const out = createPixelImage(img.width, img.height);
 	for (let i = 0; i < out.data.length; i += 4) {
@@ -88,12 +91,15 @@ export function extractChannel(img: PixelImage, channel: RgbChannel): PixelImage
 }
 
 const SWAP_INDEX: Record<ChannelSwapPair, [number, number]> = {
-	'r-g': [0, 1],
-	'r-b': [0, 2],
-	'g-b': [1, 2]
+	"r-g": [0, 1],
+	"r-b": [0, 2],
+	"g-b": [1, 2],
 };
 
-export function swapChannels(img: PixelImage, pair: ChannelSwapPair): PixelImage {
+export function swapChannels(
+	img: PixelImage,
+	pair: ChannelSwapPair,
+): PixelImage {
 	const [a, b] = SWAP_INDEX[pair];
 	const out = createPixelImage(img.width, img.height);
 	for (let i = 0; i < out.data.length; i += 4) {
@@ -108,11 +114,15 @@ export function swapChannels(img: PixelImage, pair: ChannelSwapPair): PixelImage
 	return out;
 }
 
-export function thresholdBlackWhite(img: PixelImage, thresholdPercent: number): PixelImage {
+export function thresholdBlackWhite(
+	img: PixelImage,
+	thresholdPercent: number,
+): PixelImage {
 	const threshold = (clamp(thresholdPercent, 0, 100) / 100) * 255;
 	const out = createPixelImage(img.width, img.height);
 	for (let i = 0; i < out.data.length; i += 4) {
-		const luma = 0.299 * img.data[i] + 0.587 * img.data[i + 1] + 0.114 * img.data[i + 2];
+		const luma =
+			0.299 * img.data[i] + 0.587 * img.data[i + 1] + 0.114 * img.data[i + 2];
 		const v = luma >= threshold ? 255 : 0;
 		out.data[i] = v;
 		out.data[i + 1] = v;
@@ -128,7 +138,9 @@ export function posterize(img: PixelImage, levels: number): PixelImage {
 	const out = createPixelImage(img.width, img.height);
 	for (let i = 0; i < out.data.length; i += 4) {
 		for (let ch = 0; ch < 3; ch++) {
-			out.data[i + ch] = Math.round(Math.round(img.data[i + ch] / stepSize) * stepSize);
+			out.data[i + ch] = Math.round(
+				Math.round(img.data[i + ch] / stepSize) * stepSize,
+			);
 		}
 		out.data[i + 3] = img.data[i + 3];
 	}
@@ -139,14 +151,15 @@ export function twoColors(
 	img: PixelImage,
 	lightHex: string,
 	darkHex: string,
-	thresholdPercent: number
+	thresholdPercent: number,
 ): PixelImage {
 	const [lr, lg, lb] = parseColor(lightHex);
 	const [dr, dg, db] = parseColor(darkHex);
 	const threshold = (clamp(thresholdPercent, 0, 100) / 100) * 255;
 	const out = createPixelImage(img.width, img.height);
 	for (let i = 0; i < out.data.length; i += 4) {
-		const luma = 0.299 * img.data[i] + 0.587 * img.data[i + 1] + 0.114 * img.data[i + 2];
+		const luma =
+			0.299 * img.data[i] + 0.587 * img.data[i + 1] + 0.114 * img.data[i + 2];
 		if (luma >= threshold) {
 			out.data[i] = lr;
 			out.data[i + 1] = lg;
@@ -164,20 +177,21 @@ export function twoColors(
 function parseColor(hex: string): [number, number, number] {
 	const match = /^#([0-9a-f]{6})$/i.exec(hex.trim());
 	if (!match) {
-		throw new ToolError('errors.badHex', { value: hex });
+		throw new ToolError("errors.badHex", { value: hex });
 	}
 	const digits = match[1];
 	return [
 		parseInt(digits.slice(0, 2), 16),
 		parseInt(digits.slice(2, 4), 16),
-		parseInt(digits.slice(4, 6), 16)
+		parseInt(digits.slice(4, 6), 16),
 	];
 }
 
 export function grayscale(img: PixelImage): PixelImage {
 	const out = createPixelImage(img.width, img.height);
 	for (let i = 0; i < img.data.length; i += 4) {
-		const luma = 0.299 * img.data[i] + 0.587 * img.data[i + 1] + 0.114 * img.data[i + 2];
+		const luma =
+			0.299 * img.data[i] + 0.587 * img.data[i + 1] + 0.114 * img.data[i + 2];
 		out.data[i] = luma;
 		out.data[i + 1] = luma;
 		out.data[i + 2] = luma;
@@ -200,7 +214,7 @@ export function invert(img: PixelImage): PixelImage {
 export function brightnessContrast(
 	img: PixelImage,
 	brightness: number,
-	contrast: number
+	contrast: number,
 ): PixelImage {
 	const offset = (clamp(brightness, -100, 100) / 100) * 255;
 	const c = (clamp(contrast, -100, 100) / 100) * 255;
@@ -217,7 +231,8 @@ export function brightnessContrast(
 }
 
 export function rgbToHex(r: number, g: number, b: number): string {
-	const byte = (v: number) => clamp(Math.round(v), 0, 255).toString(16).padStart(2, '0');
+	const byte = (v: number) =>
+		clamp(Math.round(v), 0, 255).toString(16).padStart(2, "0");
 	return `#${byte(r)}${byte(g)}${byte(b)}`;
 }
 
@@ -286,11 +301,11 @@ export function temperature(img: PixelImage, percent: number): PixelImage {
 export function tint(
 	img: PixelImage,
 	colorHex: string,
-	strengthPercent: number
+	strengthPercent: number,
 ): PixelImage {
 	const s = clamp(strengthPercent, 0, 100) / 100;
 	const match = /^#([0-9a-f]{6})$/i.exec(colorHex.trim());
-	if (!match) throw new ToolError('errors.badHex', { value: colorHex });
+	if (!match) throw new ToolError("errors.badHex", { value: colorHex });
 	const d = match[1];
 	const tr = parseInt(d.slice(0, 2), 16) / 255;
 	const tg = parseInt(d.slice(2, 4), 16) / 255;

web/src/lib/core/compress.test.ts

@@ -1,34 +1,35 @@
-import { describe, expect, it } from 'vitest';
-import { COMPRESSION_LEVELS, findMaxColorsWithin } from './compress';
+import { describe, expect, it } from "vitest";
+import { COMPRESSION_LEVELS, findMaxColorsWithin } from "./compress";
 
-describe('COMPRESSION_LEVELS', () => {
-	it('пресеты упорядочены по убыванию цветов', () => {
+describe("COMPRESSION_LEVELS", () => {
+	it("пресеты упорядочены по убыванию цветов", () => {
 		const values = Object.values(COMPRESSION_LEVELS);
-		for (let i = 1; i < values.length; i++) expect(values[i - 1]).toBeGreaterThan(values[i]);
+		for (let i = 1; i < values.length; i++)
+			expect(values[i - 1]).toBeGreaterThan(values[i]);
 	});
 });
 
-describe('findMaxColorsWithin', () => {
+describe("findMaxColorsWithin", () => {
 	const sizeOf = (k: number) => 1000 + k * 100; // размер растёт с k
 
-	it('подбирает максимум k, укладывающийся в цель', async () => {
+	it("подбирает максимум k, укладывающийся в цель", async () => {
 		// target 5200 → подходит k≤42 → ожидаем 42 при maxK≥42
 		const k = await findMaxColorsWithin(5200, 256, async (kk) => sizeOf(kk));
 		expect(k).toBeGreaterThanOrEqual(40);
 		expect(sizeOf(k)).toBeLessThanOrEqual(5200);
 	});
 
-	it('цель достигается даже на минимуме — возвращает 2', async () => {
+	it("цель достигается даже на минимуме — возвращает 2", async () => {
 		const k = await findMaxColorsWithin(50, 256, async (kk) => sizeOf(kk));
 		expect(k).toBe(2);
 	});
 
-	it('encodeSize null трактуется как провал', async () => {
+	it("encodeSize null трактуется как провал", async () => {
 		const k = await findMaxColorsWithin(999999, 16, async () => null);
 		expect(k).toBe(2);
 	});
 
-	it('бинарный поиск сходится быстрее полного перебора', async () => {
+	it("бинарный поиск сходится быстрее полного перебора", async () => {
 		let calls = 0;
 		await findMaxColorsWithin(30000, 256, async (kk) => {
 			calls++;

web/src/lib/core/compress.ts

@@ -3,7 +3,7 @@ export const COMPRESSION_LEVELS = {
 	light: 192,
 	balanced: 96,
 	strong: 44,
-	extreme: 16
+	extreme: 16,
 } as const;
 
 export type CompressionLevel = keyof typeof COMPRESSION_LEVELS;
@@ -16,7 +16,7 @@ export type CompressionLevel = keyof typeof COMPRESSION_LEVELS;
 export async function findMaxColorsWithin(
 	targetBytes: number,
 	maxK: number,
-	encodeSize: (k: number) => Promise<number | null>
+	encodeSize: (k: number) => Promise<number | null>,
 ): Promise<number> {
 	const hi = Math.max(2, Math.round(maxK));
 	let ok = 2;

web/src/lib/core/convolution.test.ts

@@ -1,19 +1,19 @@
-import { describe, expect, it } from 'vitest';
-import { convolve, gaussianBlur, sharpen } from './convolution';
-import { makeImage } from './test-helpers';
+import { describe, expect, it } from "vitest";
+import { convolve, gaussianBlur, sharpen } from "./convolution";
+import { makeImage } from "./test-helpers";
 
 const SHARPEN_KERNEL = [0, -1, 0, -1, 5, -1, 0, -1, 0];
 
-describe('convolve', () => {
-	it('крестовое ядро резкости на полоске из трёх пикселей', () => {
+describe("convolve", () => {
+	it("крестовое ядро резкости на полоске из трёх пикселей", () => {
 		const out = convolve(
 			makeImage(3, 1, [
 				[0, 0, 0, 255],
 				[100, 100, 100, 255],
-				[0, 0, 0, 255]
+				[0, 0, 0, 255],
 			]),
 			SHARPEN_KERNEL,
-			3
+			3,
 		);
 		expect([...out.data.slice(4, 8)]).toEqual([255, 255, 255, 255]);
 		expect([...out.data.slice(0, 4)]).toEqual([0, 0, 0, 255]);
@@ -23,39 +23,41 @@ describe('convolve', () => {
 	it.each([
 		[2, 3],
 		[3.5, 3],
-		[0, 3]
-	])('бросает ошибку на некорректном размере ядра %i', (size) => {
-		expect(() => convolve(makeImage(1, 1, [[0, 0, 0, 255]]), [1], size as number)).toThrow();
+		[0, 3],
+	])("бросает ошибку на некорректном размере ядра %i", (size) => {
+		expect(() =>
+			convolve(makeImage(1, 1, [[0, 0, 0, 255]]), [1], size as number),
+		).toThrow();
 	});
 });
 
-describe('sharpen', () => {
-	it('сила 0 возвращает копию', () => {
+describe("sharpen", () => {
+	it("сила 0 возвращает копию", () => {
 		const img = makeImage(2, 2, [
 			[10, 20, 30, 255],
 			[40, 50, 60, 128],
 			[70, 80, 90, 255],
-			[100, 110, 120, 200]
+			[100, 110, 120, 200],
 		]);
 		expect([...sharpen(img, 0).data]).toEqual([...img.data]);
 	});
 
-	it('сила 100 применяет чистое ядро резкости', () => {
+	it("сила 100 применяет чистое ядро резкости", () => {
 		const out = sharpen(
 			makeImage(3, 1, [
 				[0, 0, 0, 255],
 				[100, 100, 100, 255],
-				[0, 0, 0, 255]
+				[0, 0, 0, 255],
 			]),
-			100
+			100,
 		);
 		expect(out.data[4]).toBe(255);
 		expect(out.data[0]).toBe(0);
 	});
 });
 
-describe('gaussianBlur', () => {
-	it('постоянное изображение не меняется ни в RGB, ни в альфе', () => {
+describe("gaussianBlur", () => {
+	it("постоянное изображение не меняется ни в RGB, ни в альфе", () => {
 		const img = makeImage(3, 3, new Array(9).fill([40, 80, 120, 128]));
 		const out = gaussianBlur(img, 16);
 		for (let i = 0; i < out.data.length; i++) {
@@ -63,13 +65,15 @@ describe('gaussianBlur', () => {
 		}
 	});
 
-	it('далёкие углы остаются прозрачными, цвет центра не искажается', () => {
+	it("далёкие углы остаются прозрачными, цвет центра не искажается", () => {
 		const size = 61;
 		const pixels: number[][] = [];
 		for (let y = 0; y < size; y++) {
 			for (let x = 0; x < size; x++) {
 				pixels.push(
-					x >= 26 && x <= 34 && y >= 26 && y <= 34 ? [200, 50, 25, 255] : [0, 0, 0, 0]
+					x >= 26 && x <= 34 && y >= 26 && y <= 34
+						? [200, 50, 25, 255]
+						: [0, 0, 0, 0],
 				);
 			}
 		}
@@ -85,50 +89,50 @@ describe('gaussianBlur', () => {
 		expect(out.data[center + 2]).toBe(25);
 	});
 
-	it('симметричный вход даёт симметричный результат', () => {
+	it("симметричный вход даёт симметричный результат", () => {
 		const leftByRow = [
 			[
 				[255, 0, 0, 255],
 				[10, 20, 30, 255],
 				[64, 64, 64, 64],
-				[5, 5, 5, 200]
+				[5, 5, 5, 200],
 			],
 			[
 				[10, 20, 30, 255],
 				[200, 100, 50, 255],
 				[1, 2, 3, 4],
-				[90, 90, 90, 250]
+				[90, 90, 90, 250],
 			],
 			[
 				[64, 64, 64, 64],
 				[1, 2, 3, 4],
 				[128, 128, 128, 128],
-				[40, 40, 40, 240]
+				[40, 40, 40, 240],
 			],
 			[
 				[200, 100, 50, 255],
 				[90, 90, 90, 250],
 				[40, 40, 40, 240],
-				[7, 7, 7, 255]
+				[7, 7, 7, 255],
 			],
 			[
 				[10, 20, 30, 255],
 				[1, 2, 3, 4],
 				[64, 64, 64, 64],
-				[90, 90, 90, 250]
+				[90, 90, 90, 250],
 			],
 			[
 				[64, 64, 64, 64],
 				[200, 100, 50, 255],
 				[5, 5, 5, 200],
-				[1, 2, 3, 4]
+				[1, 2, 3, 4],
 			],
 			[
 				[5, 5, 5, 200],
 				[40, 40, 40, 240],
 				[90, 90, 90, 250],
-				[128, 128, 128, 128]
-			]
+				[128, 128, 128, 128],
+			],
 		];
 		const pixels: number[][] = [];
 		for (let y = 0; y < 7; y++) {
@@ -146,7 +150,7 @@ describe('gaussianBlur', () => {
 					blurred.data[ri],
 					blurred.data[ri + 1],
 					blurred.data[ri + 2],
-					blurred.data[ri + 3]
+					blurred.data[ri + 3],
 				]);
 			}
 		}

web/src/lib/core/convolution.ts

@@ -1,18 +1,18 @@
-import { clonePixelImage, createPixelImage, type PixelImage } from './types';
-import { ToolError } from './errors';
+import { clonePixelImage, createPixelImage, type PixelImage } from "./types";
+import { ToolError } from "./errors";
 
 type Plane = Float64Array;
 
 export function convolve(
 	img: PixelImage,
 	kernel: readonly number[],
-	size: number
+	size: number,
 ): PixelImage {
 	if (!Number.isInteger(size) || size < 1 || size % 2 === 0) {
-		throw new ToolError('errors.radiusInt');
+		throw new ToolError("errors.radiusInt");
 	}
 	if (kernel.length !== size * size) {
-		throw new ToolError('errors.kernelSize');
+		throw new ToolError("errors.kernelSize");
 	}
 	const half = Math.floor(size / 2);
 	const out = createPixelImage(img.width, img.height);
@@ -24,12 +24,14 @@ export function convolve(
 					const sy = clampInt(y + ky - half, 0, img.height - 1);
 					for (let kx = 0; kx < size; kx++) {
 						const sx = clampInt(x + kx - half, 0, img.width - 1);
-						acc += img.data[(sy * img.width + sx) * 4 + ch] * kernel[ky * size + kx];
+						acc +=
+							img.data[(sy * img.width + sx) * 4 + ch] * kernel[ky * size + kx];
 					}
 				}
 				out.data[(y * out.width + x) * 4 + ch] = acc;
 			}
-			out.data[(y * out.width + x) * 4 + 3] = img.data[(y * img.width + x) * 4 + 3];
+			out.data[(y * out.width + x) * 4 + 3] =
+				img.data[(y * img.width + x) * 4 + 3];
 		}
 	}
 	return out;
@@ -103,7 +105,13 @@ export function gaussianBlur(img: PixelImage, radiusPx: number): PixelImage {
 	return out;
 }
 
-function blurPlanePass(plane: Plane, tmp: Plane, w: number, h: number, r: number): void {
+function blurPlanePass(
+	plane: Plane,
+	tmp: Plane,
+	w: number,
+	h: number,
+	r: number,
+): void {
 	blurPlaneHorizontal(plane, tmp, w, h, r);
 	blurPlaneVertical(tmp, plane, w, h, r);
 }
@@ -113,7 +121,7 @@ function blurPlaneHorizontal(
 	dst: Plane,
 	w: number,
 	h: number,
-	r: number
+	r: number,
 ): void {
 	const div = 2 * r + 1;
 	const inv = 1 / div;
@@ -137,7 +145,7 @@ function blurPlaneVertical(
 	dst: Plane,
 	w: number,
 	h: number,
-	r: number
+	r: number,
 ): void {
 	const div = 2 * r + 1;
 	const inv = 1 / div;
@@ -160,7 +168,8 @@ function boxesForGauss(sigma: number, boxes: number): number[] {
 	let wl = Math.floor(wIdeal);
 	if (wl % 2 === 0) wl--;
 	const wu = wl + 2;
-	const mIdeal = (12 * sigma * sigma - boxes * wl * wl - boxes * wl - boxes) / (4 * wl + 4);
+	const mIdeal =
+		(12 * sigma * sigma - boxes * wl * wl - boxes * wl - boxes) / (4 * wl + 4);
 	const m = Math.round(mIdeal);
 	const sizes: number[] = [];
 	for (let i = 0; i < boxes; i++) {

web/src/lib/core/datefmt.test.ts

@@ -1,19 +1,19 @@
-import { describe, expect, it } from 'vitest';
-import { formatStamp } from './datefmt';
+import { describe, expect, it } from "vitest";
+import { formatStamp } from "./datefmt";
 
 const d = new Date(2026, 7, 25, 9, 5, 3);
 
-describe('formatStamp', () => {
-	it('разворачивает все базовые токены', () => {
-		expect(formatStamp(d, 'YYYY-MM-DD hh:mm:ss')).toBe('2026-08-25 09:05:03');
+describe("formatStamp", () => {
+	it("разворачивает все базовые токены", () => {
+		expect(formatStamp(d, "YYYY-MM-DD hh:mm:ss")).toBe("2026-08-25 09:05:03");
 	});
 
-	it('произвольный текст между токенами сохраняется', () => {
-		expect(formatStamp(d, 'DD.MM.YYYY')).toBe('25.08.2026');
-		expect(formatStamp(d, 'YYYY год, MM месяц')).toBe('2026 год, 08 месяц');
+	it("произвольный текст между токенами сохраняется", () => {
+		expect(formatStamp(d, "DD.MM.YYYY")).toBe("25.08.2026");
+		expect(formatStamp(d, "YYYY год, MM месяц")).toBe("2026 год, 08 месяц");
 	});
 
-	it('неизвестные последовательности не трогаются', () => {
-		expect(formatStamp(d, 'YYYYYY MMМ')).toBe('2026YY 08М');
+	it("неизвестные последовательности не трогаются", () => {
+		expect(formatStamp(d, "YYYYYY MMМ")).toBe("2026YY 08М");
 	});
 });

web/src/lib/core/datefmt.ts

@@ -1,4 +1,4 @@
-const PAD2 = (n: number) => String(n).padStart(2, '0');
+const PAD2 = (n: number) => String(n).padStart(2, "0");
 
 /**
  * Мини-форматтер штампа даты: токены YYYY MM DD hh mm ss заменяются
@@ -7,17 +7,17 @@ const PAD2 = (n: number) => String(n).padStart(2, '0');
 export function formatStamp(date: Date, pattern: string): string {
 	return pattern.replace(/YYYY|MM|DD|hh|mm|ss/g, (token) => {
 		switch (token) {
-			case 'YYYY':
+			case "YYYY":
 				return String(date.getFullYear());
-			case 'MM':
+			case "MM":
 				return PAD2(date.getMonth() + 1);
-			case 'DD':
+			case "DD":
 				return PAD2(date.getDate());
-			case 'hh':
+			case "hh":
 				return PAD2(date.getHours());
-			case 'mm':
+			case "mm":
 				return PAD2(date.getMinutes());
-			case 'ss':
+			case "ss":
 				return PAD2(date.getSeconds());
 			default:
 				return token;

web/src/lib/core/domText.ts

@@ -1,33 +1,44 @@
-import { ToolError } from './errors';
-import type { PixelImage } from './types';
-import { anchorOrigin, tileGrid, wrapText, type Position9 } from './textdraw';
+import { ToolError } from "./errors";
+import type { PixelImage } from "./types";
+import { anchorOrigin, tileGrid, wrapText, type Position9 } from "./textdraw";
 
-export type TextFont = 'sans' | 'serif' | 'mono';
+export type TextFont = "sans" | "serif" | "mono";
 
 const FONT_STACKS: Record<TextFont, string> = {
 	sans: 'system-ui, -apple-system, "Segoe UI", Roboto, sans-serif',
 	serif: 'Georgia, "Times New Roman", serif',
-	mono: 'ui-monospace, "Cascadia Code", Consolas, monospace'
+	mono: 'ui-monospace, "Cascadia Code", Consolas, monospace',
 };
 
-function ctx2d(w: number, h: number): { canvas: HTMLCanvasElement; ctx: CanvasRenderingContext2D } {
-	const canvas = document.createElement('canvas');
+function ctx2d(
+	w: number,
+	h: number,
+): { canvas: HTMLCanvasElement; ctx: CanvasRenderingContext2D } {
+	const canvas = document.createElement("canvas");
 	canvas.width = w;
 	canvas.height = h;
-	const ctx = canvas.getContext('2d', { willReadFrequently: true });
-	if (!ctx) throw new ToolError('errors.noCanvasCtx');
+	const ctx = canvas.getContext("2d", { willReadFrequently: true });
+	if (!ctx) throw new ToolError("errors.noCanvasCtx");
 	return { canvas, ctx };
 }
 
 function toPixelImage(canvas: HTMLCanvasElement): PixelImage {
-	const ctx = canvas.getContext('2d');
-	if (!ctx) throw new ToolError('errors.noCanvasCtx');
+	const ctx = canvas.getContext("2d");
+	if (!ctx) throw new ToolError("errors.noCanvasCtx");
 	const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
-	return { width: imageData.width, height: imageData.height, data: imageData.data };
+	return {
+		width: imageData.width,
+		height: imageData.height,
+		data: imageData.data,
+	};
 }
 
-export function fontString(size: number, font: TextFont, bold: boolean): string {
-	return `${bold ? '700 ' : '400 '}${size}px ${FONT_STACKS[font]}`;
+export function fontString(
+	size: number,
+	font: TextFont,
+	bold: boolean,
+): string {
+	return `${bold ? "700 " : "400 "}${size}px ${FONT_STACKS[font]}`;
 }
 
 export interface TextBlockOptions {
@@ -46,9 +57,16 @@ export interface TextBlockOptions {
 }
 
 /** Одна надпись (с автопереносом и опциональной плашкой) поверх изображения. */
-export function drawTextBlock(img: PixelImage, o: TextBlockOptions): PixelImage {
+export function drawTextBlock(
+	img: PixelImage,
+	o: TextBlockOptions,
+): PixelImage {
 	const { canvas, ctx } = ctx2d(img.width, img.height);
-	ctx.putImageData(new ImageData(new Uint8ClampedArray(img.data), img.width, img.height), 0, 0);
+	ctx.putImageData(
+		new ImageData(new Uint8ClampedArray(img.data), img.width, img.height),
+		0,
+		0,
+	);
 
 	ctx.font = fontString(o.fontSize, o.font, o.bold);
 	const maxWidth = ((o.maxWidthPercent ?? 90) / 100) * img.width;
@@ -57,11 +75,18 @@ export function drawTextBlock(img: PixelImage, o: TextBlockOptions): PixelImage
 	const ascent = o.fontSize * 0.8;
 	const blockW = Math.min(
 		maxWidth,
-		lines.reduce((max, s) => Math.max(max, ctx.measureText(s).width), 0)
+		lines.reduce((max, s) => Math.max(max, ctx.measureText(s).width), 0),
 	);
 	const blockH = lines.length * lineH;
 
-	const origin = anchorOrigin(o.position, blockW, blockH, img.width, img.height, o.margin);
+	const origin = anchorOrigin(
+		o.position,
+		blockW,
+		blockH,
+		img.width,
+		img.height,
+		o.margin,
+	);
 
 	ctx.save();
 	ctx.globalAlpha = o.opacityPercent / 100;
@@ -77,7 +102,7 @@ export function drawTextBlock(img: PixelImage, o: TextBlockOptions): PixelImage
 		ctx.globalAlpha = o.opacityPercent / 100;
 	}
 	ctx.fillStyle = o.color;
-	ctx.textBaseline = 'alphabetic';
+	ctx.textBaseline = "alphabetic";
 	lines.forEach((line, i) => {
 		ctx.fillText(line, origin.x, origin.y + ascent + i * lineH);
 	});
@@ -86,7 +111,10 @@ export function drawTextBlock(img: PixelImage, o: TextBlockOptions): PixelImage
 	return toPixelImage(canvas);
 }
 
-export interface TileTextOptions extends Omit<TextBlockOptions, 'position' | 'margin' | 'angleDeg'> {
+export interface TileTextOptions extends Omit<
+	TextBlockOptions,
+	"position" | "margin" | "angleDeg"
+> {
 	stepX: number;
 	stepY: number;
 	angleDeg: number;
@@ -110,7 +138,10 @@ export function renderTextToImage(o: TextToImageOptions): PixelImage {
 	measure.font = fontString(o.fontSize, o.font, o.bold);
 	const maxWidth = o.maxTextWidth ?? 4000;
 	const lines = [o.text];
-	const textW = Math.min(maxWidth, Math.max(measure.measureText(o.text).width, 1));
+	const textW = Math.min(
+		maxWidth,
+		Math.max(measure.measureText(o.text).width, 1),
+	);
 	const lineH = o.fontSize * 1.25;
 
 	const w = Math.max(1, Math.ceil(textW + o.padding * 2));
@@ -123,7 +154,7 @@ export function renderTextToImage(o: TextToImageOptions): PixelImage {
 	}
 	ctx.font = fontString(o.fontSize, o.font, o.bold);
 	ctx.fillStyle = o.color;
-	ctx.textBaseline = 'top';
+	ctx.textBaseline = "top";
 	lines.forEach((line) => ctx.fillText(line, o.padding, o.padding));
 	return toPixelImage(canvas);
 }
@@ -132,8 +163,8 @@ export function renderTextToImage(o: TextToImageOptions): PixelImage {
 export function renderEmoji(symbol: string, size: number): PixelImage {
 	const { canvas, ctx } = ctx2d(size, size);
 	ctx.font = `${Math.round(size * 0.72)}px "Apple Color Emoji","Segoe UI Emoji","Noto Color Emoji",sans-serif`;
-	ctx.textAlign = 'center';
-	ctx.textBaseline = 'middle';
+	ctx.textAlign = "center";
+	ctx.textBaseline = "middle";
 	ctx.fillText(symbol, size / 2, size / 2 + size * 0.04);
 	return toPixelImage(canvas);
 }
@@ -147,19 +178,37 @@ export interface ImageWatermarkOptions {
 }
 
 /** Картинка-знак поверх изображения: масштаб от ширины холста, позиция 3×3. */
-export function drawImageWatermark(img: PixelImage, o: ImageWatermarkOptions): PixelImage {
+export function drawImageWatermark(
+	img: PixelImage,
+	o: ImageWatermarkOptions,
+): PixelImage {
 	const { canvas, ctx } = ctx2d(img.width, img.height);
-	ctx.putImageData(new ImageData(new Uint8ClampedArray(img.data), img.width, img.height), 0, 0);
+	ctx.putImageData(
+		new ImageData(new Uint8ClampedArray(img.data), img.width, img.height),
+		0,
+		0,
+	);
 
 	const w = Math.max(1, Math.round((img.width * o.scalePercent) / 100));
 	const h = Math.max(1, Math.round((w * o.mark.height) / o.mark.width));
-	const origin = anchorOrigin(o.position, w, h, img.width, img.height, o.margin);
+	const origin = anchorOrigin(
+		o.position,
+		w,
+		h,
+		img.width,
+		img.height,
+		o.margin,
+	);
 
 	const markCanvas = ctx2d(o.mark.width, o.mark.height);
 	markCanvas.ctx.putImageData(
-		new ImageData(new Uint8ClampedArray(o.mark.data), o.mark.width, o.mark.height),
+		new ImageData(
+			new Uint8ClampedArray(o.mark.data),
+			o.mark.width,
+			o.mark.height,
+		),
+		0,
 		0,
-		0
 	);
 
 	ctx.save();
@@ -173,21 +222,33 @@ export function drawImageWatermark(img: PixelImage, o: ImageWatermarkOptions): P
 /** Повторяющаяся диагональная плитка текста на весь холст. */
 export function drawTextTile(img: PixelImage, o: TileTextOptions): PixelImage {
 	const { canvas, ctx } = ctx2d(img.width, img.height);
-	ctx.putImageData(new ImageData(new Uint8ClampedArray(img.data), img.width, img.height), 0, 0);
+	ctx.putImageData(
+		new ImageData(new Uint8ClampedArray(img.data), img.width, img.height),
+		0,
+		0,
+	);
 
 	ctx.font = fontString(o.fontSize, o.font, o.bold);
-	const sample = o.text.length > 0 ? o.text : ' ';
+	const sample = o.text.length > 0 ? o.text : " ";
 	const blockW = ctx.measureText(sample).width;
 	const blockH = o.fontSize * 1.4;
 
-	const points = tileGrid(img.width, img.height, o.angleDeg, o.stepX, o.stepY, blockW, blockH);
+	const points = tileGrid(
+		img.width,
+		img.height,
+		o.angleDeg,
+		o.stepX,
+		o.stepY,
+		blockW,
+		blockH,
+	);
 
 	ctx.save();
 	ctx.translate(img.width / 2, img.height / 2);
 	ctx.rotate((o.angleDeg * Math.PI) / 180);
 	ctx.globalAlpha = o.opacityPercent / 100;
 	ctx.fillStyle = o.color;
-	ctx.textBaseline = 'middle';
+	ctx.textBaseline = "middle";
 	for (const p of points) {
 		ctx.fillText(sample, p.x - blockW / 2, p.y);
 	}

web/src/lib/core/effects.test.ts

@@ -1,14 +1,14 @@
-import { describe, expect, it } from 'vitest';
-import { vignette } from './effects';
-import { makeImage } from './test-helpers';
+import { describe, expect, it } from "vitest";
+import { vignette } from "./effects";
+import { makeImage } from "./test-helpers";
 
-describe('vignette', () => {
-	it('сила 0 — идентичное преобразование', () => {
+describe("vignette", () => {
+	it("сила 0 — идентичное преобразование", () => {
 		const img = makeImage(3, 3, new Array(9).fill([200, 100, 50, 255]));
 		expect([...vignette(img, 0).data]).toEqual([...img.data]);
 	});
 
-	it('углы темнее центра', () => {
+	it("углы темнее центра", () => {
 		const img = makeImage(7, 7, new Array(49).fill([200, 200, 200, 255]));
 		const out = vignette(img, 80);
 		const centerR = out.data[(3 * 7 + 3) * 4];

web/src/lib/core/effects.ts

@@ -1,4 +1,4 @@
-import { clonePixelImage, createPixelImage, type PixelImage } from './types';
+import { clonePixelImage, createPixelImage, type PixelImage } from "./types";
 
 export function vignette(img: PixelImage, strengthPercent: number): PixelImage {
 	const strength = Math.min(Math.max(strengthPercent, 0), 100) / 100;

web/src/lib/core/errors.ts

@@ -11,7 +11,7 @@ export class ToolError extends Error {
 
 	constructor(key: string, vars?: ErrorVars) {
 		super(key);
-		this.name = 'ToolError';
+		this.name = "ToolError";
 		this.key = key;
 		this.vars = vars;
 	}

web/src/lib/core/gap-geometry.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from "vitest";
 import {
 	changeCanvasSize,
 	contentBounds,
@@ -6,9 +6,9 @@ import {
 	forceOrientation,
 	padToRatio,
 	symmetricCopy,
-	trimToContent
-} from './geometry';
-import { makeImage } from './test-helpers';
+	trimToContent,
+} from "./geometry";
+import { makeImage } from "./test-helpers";
 
 const bordered = () => {
 	// 4×4: рамка из прозрачных пикселей вокруг красного центра 2×2
@@ -23,12 +23,12 @@ const bordered = () => {
 	return img;
 };
 
-describe('contentBounds / trimToContent', () => {
-	it('границы по порогу альфы', () => {
+describe("contentBounds / trimToContent", () => {
+	it("границы по порогу альфы", () => {
 		expect(contentBounds(bordered(), 0)).toEqual({ x: 1, y: 1, w: 2, h: 2 });
 	});
 
-	it('trim обрезает поля и сохраняет содержимое', () => {
+	it("trim обрезает поля и сохраняет содержимое", () => {
 		const out = trimToContent(bordered(), 0);
 		expect(out.width).toBe(2);
 		expect(out.height).toBe(2);
@@ -36,7 +36,7 @@ describe('contentBounds / trimToContent', () => {
 		expect(out.data[3]).toBe(255);
 	});
 
-	it('полностью прозрачное изображение → 1×1', () => {
+	it("полностью прозрачное изображение → 1×1", () => {
 		const empty = makeImage(3, 3, new Array(9).fill([0, 0, 0, 0]));
 		const out = trimToContent(empty, 0);
 		expect(out.width).toBe(1);
@@ -44,43 +44,43 @@ describe('contentBounds / trimToContent', () => {
 	});
 });
 
-describe('changeCanvasSize', () => {
+describe("changeCanvasSize", () => {
 	const img = makeImage(2, 2, [
 		[1, 1, 1, 255],
 		[2, 2, 2, 255],
 		[3, 3, 3, 255],
-		[4, 4, 4, 255]
+		[4, 4, 4, 255],
 	]);
 
-	it('увеличение с якорем center — прозрачные поля со всех сторон', () => {
-		const out = changeCanvasSize(img, 4, 4, 'center');
+	it("увеличение с якорем center — прозрачные поля со всех сторон", () => {
+		const out = changeCanvasSize(img, 4, 4, "center");
 		expect(out.width).toBe(4);
 		expect(out.data[3]).toBe(0);
 		expect(out.data[(1 * 4 + 1) * 4 + 3]).toBe(255);
 	});
 
-	it('увеличение с якорем top-left — контент прижат в угол', () => {
-		const out = changeCanvasSize(img, 4, 4, 'top-left');
+	it("увеличение с якорем top-left — контент прижат в угол", () => {
+		const out = changeCanvasSize(img, 4, 4, "top-left");
 		expect(out.data[3]).toBe(255);
 		expect(out.data[(3 * 4 + 3) * 4 + 3]).toBe(0);
 	});
 
-	it('уменьшение обрезает как кроп от якоря bottom-right', () => {
-		const out = changeCanvasSize(img, 1, 1, 'bottom-right');
+	it("уменьшение обрезает как кроп от якоря bottom-right", () => {
+		const out = changeCanvasSize(img, 1, 1, "bottom-right");
 		expect(out.data[0]).toBe(4);
 	});
 });
 
-describe('соотношение сторон', () => {
+describe("соотношение сторон", () => {
 	const wide = makeImage(400, 200, new Array(80000).fill([9, 9, 9, 255]));
 
-	it('cropToRatio 1:1 из 2:1 → квадрат по высоте', () => {
+	it("cropToRatio 1:1 из 2:1 → квадрат по высоте", () => {
 		const out = cropToRatio(wide, 1);
 		expect(out.width).toBe(200);
 		expect(out.height).toBe(200);
 	});
 
-	it('padToRatio 1:1 из 2:1 → квадрат с прозрачными полями', () => {
+	it("padToRatio 1:1 из 2:1 → квадрат с прозрачными полями", () => {
 		const out = padToRatio(wide, 1);
 		expect(out.width).toBe(400);
 		expect(out.height).toBe(400);
@@ -89,39 +89,39 @@ describe('соотношение сторон', () => {
 	});
 });
 
-describe('forceOrientation / symmetricCopy', () => {
-	it('широкое становится высоким поворотом', () => {
+describe("forceOrientation / symmetricCopy", () => {
+	it("широкое становится высоким поворотом", () => {
 		const wide = makeImage(300, 100, new Array(30000).fill([5, 5, 5, 255]));
-		const out = forceOrientation(wide, 'portrait');
+		const out = forceOrientation(wide, "portrait");
 		expect(out.width).toBe(100);
 		expect(out.height).toBe(300);
 	});
 
-	it('квадрат не поворачивается', () => {
+	it("квадрат не поворачивается", () => {
 		const sq = makeImage(50, 50, new Array(2500).fill([5, 5, 5, 255]));
-		const out = forceOrientation(sq, 'portrait');
+		const out = forceOrientation(sq, "portrait");
 		expect(out.width).toBe(50);
 		expect(out.height).toBe(50);
 	});
 
-	it('симметричная копия удваивает ширину и зеркалит правую половину', () => {
+	it("симметричная копия удваивает ширину и зеркалит правую половину", () => {
 		const img = makeImage(2, 1, [
 			[10, 0, 0, 255],
-			[20, 0, 0, 255]
+			[20, 0, 0, 255],
 		]);
-		const out = symmetricCopy(img, 'vertical', 'left');
+		const out = symmetricCopy(img, "vertical", "left");
 		expect(out.width).toBe(4);
 		expect(out.data[0]).toBe(10);
 		expect(out.data[8]).toBe(20); // пиксель 2 = зеркало начала
 		expect(out.data[12]).toBe(10); // пиксель 3 = зеркало конца
 	});
 
-	it('вертикальная ось удваивает высоту', () => {
+	it("вертикальная ось удваивает высоту", () => {
 		const img = makeImage(1, 2, [
 			[10, 0, 0, 255],
-			[30, 0, 0, 255]
+			[30, 0, 0, 255],
 		]);
-		const out = symmetricCopy(img, 'horizontal', 'top');
+		const out = symmetricCopy(img, "horizontal", "top");
 		expect(out.height).toBe(4);
 		expect(out.data[(2 * 1 + 0) * 4]).toBe(30); // строка 2 = зеркало строки 1
 		expect(out.data[(3 * 1 + 0) * 4]).toBe(10); // строка 3 = зеркало строки 0

web/src/lib/core/gen-tools.test.ts

@@ -1,23 +1,23 @@
-import { describe, expect, it } from 'vitest';
-import { colorSpectrum, drawGrid, randomColorBlocks } from './gen-tools';
+import { describe, expect, it } from "vitest";
+import { colorSpectrum, drawGrid, randomColorBlocks } from "./gen-tools";
 
-describe('colorSpectrum', () => {
-	it('горизонтальный: левый край красный (hue 0)', () => {
-		const img = colorSpectrum(100, 10, 'horizontal', 100, 50);
+describe("colorSpectrum", () => {
+	it("горизонтальный: левый край красный (hue 0)", () => {
+		const img = colorSpectrum(100, 10, "horizontal", 100, 50);
 		expect(img.data[0]).toBeGreaterThan(200);
 		expect(img.data[1]).toBeLessThan(60);
 	});
 
-	it('вертикальный: зелёный максимум около hue 120°', () => {
-		const img = colorSpectrum(10, 100, 'vertical', 100, 50);
+	it("вертикальный: зелёный максимум около hue 120°", () => {
+		const img = colorSpectrum(10, 100, "vertical", 100, 50);
 		const rowHue120 = Math.round((120 / 360) * 99);
 		const g = img.data[(rowHue120 * 10 + 5) * 4 + 1];
 		expect(g).toBeGreaterThan(200);
 	});
 });
 
-describe('randomColorBlocks', () => {
-	it('детерминирован по seed и блоки однотонные', () => {
+describe("randomColorBlocks", () => {
+	it("детерминирован по seed и блоки однотонные", () => {
 		const a = randomColorBlocks(64, 64, 16, 7);
 		const b = randomColorBlocks(64, 64, 16, 7);
 		expect([...a.data]).toEqual([...b.data]);
@@ -27,18 +27,18 @@ describe('randomColorBlocks', () => {
 	});
 });
 
-describe('drawGrid', () => {
-	it('линии на пересечениях непрозрачны, фон прозрачен', () => {
-		const out = drawGrid(100, 100, 4, 4, 2, '#000000', true);
+describe("drawGrid", () => {
+	it("линии на пересечениях непрозрачны, фон прозрачен", () => {
+		const out = drawGrid(100, 100, 4, 4, 2, "#000000", true);
 		expect(out.data[0]).toBe(0);
 		expect(out.data[3]).toBe(255); // (0,0) на линии
-		const mid = ((53 * 100) + 53) * 4;
+		const mid = (53 * 100 + 53) * 4;
 		expect(out.data[mid + 3]).toBe(0); // между линиями прозрачн
 	});
 
-	it('белый непрозрачный фон при transparentBg=false', () => {
-		const out = drawGrid(20, 20, 2, 2, 1, '#000000', false);
-		const mid = ((5 * 20) + 5) * 4;
+	it("белый непрозрачный фон при transparentBg=false", () => {
+		const out = drawGrid(20, 20, 2, 2, 1, "#000000", false);
+		const mid = (5 * 20 + 5) * 4;
 		expect(out.data[mid]).toBe(255);
 	});
 });

web/src/lib/core/gen-tools.ts

@@ -1,23 +1,26 @@
-import { createPixelImage, type PixelImage } from './types';
-import { hslToRgb } from './palette';
-import { mulberry32 } from './pixel-fx';
+import { createPixelImage, type PixelImage } from "./types";
+import { hslToRgb } from "./palette";
+import { mulberry32 } from "./pixel-fx";
 
 /** Радужный спектр: оттенок 0..360 вдоль выбранной оси. */
 export function colorSpectrum(
 	width: number,
 	height: number,
-	direction: 'horizontal' | 'vertical',
+	direction: "horizontal" | "vertical",
 	saturationPercent: number,
-	lightnessPercent: number
+	lightnessPercent: number,
 ): PixelImage {
 	const out = createPixelImage(width, height);
 	for (let y = 0; y < height; y++) {
 		for (let x = 0; x < width; x++) {
-			const t = direction === 'vertical' ? y / Math.max(1, height - 1) : x / Math.max(1, width - 1);
+			const t =
+				direction === "vertical"
+					? y / Math.max(1, height - 1)
+					: x / Math.max(1, width - 1);
 			const { r, g, b } = hslToRgb({
 				h: t * 360,
 				s: saturationPercent / 100,
-				l: lightnessPercent / 100
+				l: lightnessPercent / 100,
 			});
 			const di = (y * width + x) * 4;
 			out.data[di] = r;
@@ -34,7 +37,7 @@ export function randomColorBlocks(
 	width: number,
 	height: number,
 	blockSize: number,
-	seed: number
+	seed: number,
 ): PixelImage {
 	const bs = Math.max(1, Math.round(blockSize));
 	const out = createPixelImage(width, height);
@@ -44,7 +47,7 @@ export function randomColorBlocks(
 			const { r, g, b } = hslToRgb({
 				h: rng() * 360,
 				s: 0.65 + rng() * 0.35,
-				l: 0.45 + rng() * 0.25
+				l: 0.45 + rng() * 0.25,
 			});
 			const yMax = Math.min(by + bs, height);
 			const xMax = Math.min(bx + bs, width);
@@ -62,7 +65,11 @@ export function randomColorBlocks(
 	return out;
 }
 
-function lineMask(length: number, divisions: number, lineWidth: number): Uint8Array {
+function lineMask(
+	length: number,
+	divisions: number,
+	lineWidth: number,
+): Uint8Array {
 	const mask = new Uint8Array(length);
 	const lw = Math.max(1, Math.round(lineWidth));
 	for (let i = 0; i <= divisions; i++) {
@@ -80,7 +87,7 @@ export function drawGrid(
 	rows: number,
 	lineWidth: number,
 	colorHex: string,
-	transparentBg: boolean
+	transparentBg: boolean,
 ): PixelImage {
 	const out = createPixelImage(width, height);
 	if (!transparentBg) out.data.fill(255);

web/src/lib/core/generate.test.ts

@@ -1,8 +1,8 @@
-import { describe, expect, it } from 'vitest';
-import { gradientImage, noiseImage, solidImage } from './generate';
+import { describe, expect, it } from "vitest";
+import { gradientImage, noiseImage, solidImage } from "./generate";
 
-describe('solidImage', () => {
-	it('заливает весь холст заданным цветом', () => {
+describe("solidImage", () => {
+	it("заливает весь холст заданным цветом", () => {
 		const out = solidImage(2, 2, [10, 20, 30, 255]);
 		expect(out.width).toBe(2);
 		expect([...out.data]).toEqual(new Array(4).fill([10, 20, 30, 255]).flat());
@@ -12,24 +12,26 @@ describe('solidImage', () => {
 		[0, 10],
 		[10, 0],
 		[2.5, 10],
-		[-1, 5]
-	])('бросает ошибку на размерах %i x %i', (w, h) => {
+		[-1, 5],
+	])("бросает ошибку на размерах %i x %i", (w, h) => {
 		expect(() => solidImage(w, h, [0, 0, 0, 255])).toThrow();
 	});
 });
 
-describe('noiseImage', () => {
-	it('детерминирован: одно зерно — одни байты', () => {
-		expect([...noiseImage(4, 4, 42).data]).toEqual([...noiseImage(4, 4, 42).data]);
+describe("noiseImage", () => {
+	it("детерминирован: одно зерно — одни байты", () => {
+		expect([...noiseImage(4, 4, 42).data]).toEqual([
+			...noiseImage(4, 4, 42).data,
+		]);
 	});
 
-	it('разные зерна дают разные данные', () => {
+	it("разные зерна дают разные данные", () => {
 		const a = [...noiseImage(8, 8, 1).data];
 		const b = [...noiseImage(8, 8, 2).data];
 		expect(a).not.toEqual(b);
 	});
 
-	it('альфа всегда непрозрачная', () => {
+	it("альфа всегда непрозрачная", () => {
 		const data = noiseImage(3, 3, 7).data;
 		for (let i = 3; i < data.length; i += 4) {
 			expect(data[i]).toBe(255);
@@ -37,14 +39,14 @@ describe('noiseImage', () => {
 	});
 });
 
-describe('gradientImage', () => {
-	it('горизонтальный градиент идёт от цвета A к цвету B', () => {
+describe("gradientImage", () => {
+	it("горизонтальный градиент идёт от цвета A к цвету B", () => {
 		const out = gradientImage(
 			3,
 			1,
 			[0, 0, 0, 255],
 			[255, 255, 255, 255],
-			'horizontal'
+			"horizontal",
 		);
 		const px = (x: number) => [...out.data.slice(x * 4, x * 4 + 4)];
 		expect(px(0)).toEqual([0, 0, 0, 255]);
@@ -52,13 +54,13 @@ describe('gradientImage', () => {
 		expect(px(2)).toEqual([255, 255, 255, 255]);
 	});
 
-	it('вертикальный градиент меняется по строкам', () => {
+	it("вертикальный градиент меняется по строкам", () => {
 		const out = gradientImage(
 			1,
 			2,
 			[0, 0, 0, 255],
 			[100, 100, 100, 255],
-			'vertical'
+			"vertical",
 		);
 		expect(out.data[0]).toBe(0);
 		expect(out.data[4]).toBe(100);

web/src/lib/core/generate.ts

@@ -1,13 +1,18 @@
-import type { PixelImage } from './types';
-import { ToolError } from './errors';
+import type { PixelImage } from "./types";
+import { ToolError } from "./errors";
 
 export function solidImage(
 	width: number,
 	height: number,
-	rgba: [number, number, number, number]
+	rgba: [number, number, number, number],
 ): PixelImage {
-	if (!Number.isInteger(width) || !Number.isInteger(height) || width < 1 || height < 1) {
-		throw new ToolError('errors.sizeInt');
+	if (
+		!Number.isInteger(width) ||
+		!Number.isInteger(height) ||
+		width < 1 ||
+		height < 1
+	) {
+		throw new ToolError("errors.sizeInt");
 	}
 	const data = new Uint8ClampedArray(width * height * 4);
 	for (let i = 0; i < data.length; i += 4) {
@@ -19,9 +24,18 @@ export function solidImage(
 	return { width, height, data };
 }
 
-export function noiseImage(width: number, height: number, seed: number): PixelImage {
-	if (!Number.isInteger(width) || !Number.isInteger(height) || width < 1 || height < 1) {
-		throw new ToolError('errors.sizeInt');
+export function noiseImage(
+	width: number,
+	height: number,
+	seed: number,
+): PixelImage {
+	if (
+		!Number.isInteger(width) ||
+		!Number.isInteger(height) ||
+		width < 1 ||
+		height < 1
+	) {
+		throw new ToolError("errors.sizeInt");
 	}
 	const random = mulberry32(seed);
 	const data = new Uint8ClampedArray(width * height * 4);
@@ -39,20 +53,25 @@ export function gradientImage(
 	height: number,
 	fromRgba: [number, number, number, number],
 	toRgba: [number, number, number, number],
-	direction: 'horizontal' | 'vertical'
+	direction: "horizontal" | "vertical",
 ): PixelImage {
-	if (!Number.isInteger(width) || !Number.isInteger(height) || width < 1 || height < 1) {
-		throw new ToolError('errors.sizeInt');
+	if (
+		!Number.isInteger(width) ||
+		!Number.isInteger(height) ||
+		width < 1 ||
+		height < 1
+	) {
+		throw new ToolError("errors.sizeInt");
 	}
 	const out: PixelImage = {
 		width,
 		height,
-		data: new Uint8ClampedArray(width * height * 4)
+		data: new Uint8ClampedArray(width * height * 4),
 	};
-	const steps = (direction === 'horizontal' ? width : height) - 1;
+	const steps = (direction === "horizontal" ? width : height) - 1;
 	for (let y = 0; y < height; y++) {
 		for (let x = 0; x < width; x++) {
-			const t = steps === 0 ? 0 : (direction === 'horizontal' ? x : y) / steps;
+			const t = steps === 0 ? 0 : (direction === "horizontal" ? x : y) / steps;
 			const i = (y * width + x) * 4;
 			out.data[i] = fromRgba[0] + (toRgba[0] - fromRgba[0]) * t;
 			out.data[i + 1] = fromRgba[1] + (toRgba[1] - fromRgba[1]) * t;

web/src/lib/core/geometry.test.ts

@@ -1,94 +1,90 @@
-import { describe, expect, it } from 'vitest';
-import { centerByAlpha, crop, expandCanvas, flip, resize, rotate90, tile } from './geometry';
-import { makeImage } from './test-helpers';
+import { describe, expect, it } from "vitest";
+import {
+	centerByAlpha,
+	crop,
+	expandCanvas,
+	flip,
+	resize,
+	rotate90,
+	tile,
+} from "./geometry";
+import { makeImage } from "./test-helpers";
 
 const square = () =>
 	makeImage(2, 2, [
 		[1, 1, 1, 1],
 		[2, 2, 2, 2],
 		[3, 3, 3, 3],
-		[4, 4, 4, 4]
+		[4, 4, 4, 4],
 	]);
 
-describe('flip', () => {
-	it('отражает по горизонтали (зеркало слева-направо)', () => {
-		const out = flip(square(), 'horizontal');
+describe("flip", () => {
+	it("отражает по горизонтали (зеркало слева-направо)", () => {
+		const out = flip(square(), "horizontal");
 		expect(out.width).toBe(2);
 		expect(out.height).toBe(2);
 		expect([...out.data]).toEqual([
-			2, 2, 2, 2,
-			1, 1, 1, 1,
-			4, 4, 4, 4,
-			3, 3, 3, 3
+			2, 2, 2, 2, 1, 1, 1, 1, 4, 4, 4, 4, 3, 3, 3, 3,
 		]);
 	});
 
-	it('отражает по вертикали (сверху-вниз)', () => {
-		const out = flip(square(), 'vertical');
+	it("отражает по вертикали (сверху-вниз)", () => {
+		const out = flip(square(), "vertical");
 		expect([...out.data]).toEqual([
-			3, 3, 3, 3,
-			4, 4, 4, 4,
-			1, 1, 1, 1,
-			2, 2, 2, 2
+			3, 3, 3, 3, 4, 4, 4, 4, 1, 1, 1, 1, 2, 2, 2, 2,
 		]);
 	});
 
-	it('не мутирует вход', () => {
+	it("не мутирует вход", () => {
 		const img = square();
-		flip(img, 'horizontal');
-		expect([...img.data]).toEqual([1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4]);
+		flip(img, "horizontal");
+		expect([...img.data]).toEqual([
+			1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4,
+		]);
 	});
 });
 
-describe('rotate90', () => {
-	it('поворачивает неквадрат 2x3 на 90° по часовой', () => {
+describe("rotate90", () => {
+	it("поворачивает неквадрат 2x3 на 90° по часовой", () => {
 		const rect = makeImage(2, 3, [
 			[1, 1, 1, 1],
 			[2, 2, 2, 2],
 			[3, 3, 3, 3],
 			[4, 4, 4, 4],
 			[5, 5, 5, 5],
-			[6, 6, 6, 6]
+			[6, 6, 6, 6],
 		]);
 		const out = rotate90(rect, 1);
 		expect(out.width).toBe(3);
 		expect(out.height).toBe(2);
 		expect([...out.data]).toEqual([
-			5, 5, 5, 5,
-			3, 3, 3, 3,
-			1, 1, 1, 1,
-			6, 6, 6, 6,
-			4, 4, 4, 4,
-			2, 2, 2, 2
+			5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 6, 6, 6, 6, 4, 4, 4, 4, 2, 2, 2, 2,
 		]);
 	});
 
-	it('turns=0 возвращает копию без изменений', () => {
+	it("turns=0 возвращает копию без изменений", () => {
 		const img = square();
 		const out = rotate90(img, 0);
 		expect(out).not.toBe(img);
 		expect([...out.data]).toEqual([...img.data]);
 	});
 
-	it('нормализует turns: 5 ≡ 1, -3 ≡ 1, 4 ≡ 0', () => {
+	it("нормализует turns: 5 ≡ 1, -3 ≡ 1, 4 ≡ 0", () => {
 		const once = [...rotate90(square(), 1).data];
 		expect([...rotate90(square(), 5).data]).toEqual(once);
 		expect([...rotate90(square(), -3).data]).toEqual(once);
 		expect([...rotate90(square(), 4).data]).toEqual([...square().data]);
 	});
 
-	it('turns=2 на квадрате равно двойному отражению', () => {
+	it("turns=2 на квадрате равно двойному отражению", () => {
 		const out = rotate90(square(), 2);
 		expect([...out.data]).toEqual([
-			4, 4, 4, 4,
-			3, 3, 3, 3,
-			2, 2, 2, 2,
-			1, 1, 1, 1
+			4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1,
 		]);
 	});
 });
 
-describe('crop', () => {
+describe("crop", () => {
 	const grid = () =>
 		makeImage(3, 3, [
 			[1, 1, 1, 1],
@@ -99,63 +95,64 @@ describe('crop', () => {
 			[6, 6, 6, 6],
 			[7, 7, 7, 7],
 			[8, 8, 8, 8],
-			[9, 9, 9, 9]
+			[9, 9, 9, 9],
 		]);
 
-	it('вырезает центральную область 2x2 из 3x3', () => {
+	it("вырезает центральную область 2x2 из 3x3", () => {
 		const out = crop(grid(), 1, 1, 2, 2);
 		expect(out.width).toBe(2);
 		expect(out.height).toBe(2);
 		expect([...out.data]).toEqual([
-			5, 5, 5, 5,
-			6, 6, 6, 6,
-			8, 8, 8, 8,
-			9, 9, 9, 9
+			5, 5, 5, 5, 6, 6, 6, 6, 8, 8, 8, 8, 9, 9, 9, 9,
 		]);
 	});
 
-	it('усекает область, выходящую за границы', () => {
+	it("усекает область, выходящую за границы", () => {
 		const out = crop(grid(), -1, -1, 2, 2);
 		expect(out.width).toBe(1);
 		expect(out.height).toBe(1);
 		expect([...out.data]).toEqual([1, 1, 1, 1]);
 	});
 
-	it('бросает ToolError для области вне изображения', () => {
+	it("бросает ToolError для области вне изображения", () => {
 		expect(() => crop(grid(), 5, 5, 2, 2)).toThrow(/errors\.cropBounds/);
 	});
 });
 
-describe('expandCanvas', () => {
+describe("expandCanvas", () => {
 	const pixel = () => makeImage(1, 1, [[10, 20, 30, 255]]);
 
-	it('прозрачное расширение кладёт пиксель со смещением', () => {
+	it("прозрачное расширение кладёт пиксель со смещением", () => {
 		const out = expandCanvas(pixel(), 1, 2, 3, 4);
 		expect(out.width).toBe(5);
 		expect(out.height).toBe(7);
 		expect([...out.data.slice(0, 4)]).toEqual([0, 0, 0, 0]);
-		expect([...out.data.slice((2 * 5 + 1) * 4, (2 * 5 + 1) * 4 + 4)]).toEqual([10, 20, 30, 255]);
+		expect([...out.data.slice((2 * 5 + 1) * 4, (2 * 5 + 1) * 4 + 4)]).toEqual([
+			10, 20, 30, 255,
+		]);
 	});
 
-	it('цветной фон заливает всё вокруг', () => {
-		const out = expandCanvas(pixel(), 1, 0, 0, 0, '#ffffff');
+	it("цветной фон заливает всё вокруг", () => {
+		const out = expandCanvas(pixel(), 1, 0, 0, 0, "#ffffff");
 		expect(out.data[0]).toBe(255);
 		expect(out.data[3]).toBe(255);
 		expect(out.data[(0 * 2 + 1) * 4 + 3]).toBe(255);
 	});
 });
 
-describe('tile', () => {
-	it('повторяет изображение по сетке', () => {
+describe("tile", () => {
+	it("повторяет изображение по сетке", () => {
 		const out = tile(makeImage(1, 1, [[9, 9, 9, 255]]), 3, 2);
 		expect(out.width).toBe(3);
 		expect(out.height).toBe(2);
-		expect([...out.data].filter((_, i) => i % 4 === 0)).toEqual([9, 9, 9, 9, 9, 9]);
+		expect([...out.data].filter((_, i) => i % 4 === 0)).toEqual([
+			9, 9, 9, 9, 9, 9,
+		]);
 	});
 });
 
-describe('centerByAlpha', () => {
-	it('вырезает непрозрачный блок и центрирует на прежнем холсте', () => {
+describe("centerByAlpha", () => {
+	it("вырезает непрозрачный блок и центрирует на прежнем холсте", () => {
 		const img = makeImage(3, 3, [
 			[0, 0, 0, 0],
 			[0, 0, 0, 0],
@@ -165,7 +162,7 @@ describe('centerByAlpha', () => {
 			[0, 0, 0, 0],
 			[0, 0, 0, 0],
 			[0, 0, 0, 0],
-			[0, 0, 0, 0]
+			[0, 0, 0, 0],
 		]);
 		const out = centerByAlpha(img);
 		expect(out.width).toBe(3);
@@ -175,30 +172,30 @@ describe('centerByAlpha', () => {
 		expect(alphaAt(1, 1)).toBe(255);
 	});
 
-	it('полностью прозрачное изображение возвращается без изменений', () => {
+	it("полностью прозрачное изображение возвращается без изменений", () => {
 		const img = makeImage(2, 1, [
 			[0, 0, 0, 0],
-			[0, 0, 0, 0]
+			[0, 0, 0, 0],
 		]);
 		expect([...centerByAlpha(img).data]).toEqual([...img.data]);
 	});
 });
 
-describe('resize', () => {
+describe("resize", () => {
 	const twoByTwo = () =>
 		makeImage(2, 2, [
 			[0, 0, 0, 255],
 			[100, 100, 100, 255],
 			[200, 200, 200, 255],
-			[255, 255, 255, 255]
+			[255, 255, 255, 255],
 		]);
 
-	it('совпадает с входом при тех же размерах', () => {
+	it("совпадает с входом при тех же размерах", () => {
 		const img = twoByTwo();
 		expect([...resize(img, 2, 2).data]).toEqual([...img.data]);
 	});
 
-	it('апскейл 2x2 -> 4x4 билинейно интерполирует', () => {
+	it("апскейл 2x2 -> 4x4 билинейно интерполирует", () => {
 		const out = resize(twoByTwo(), 4, 4);
 		expect(out.width).toBe(4);
 		expect(out.height).toBe(4);
@@ -207,7 +204,7 @@ describe('resize', () => {
 		expect(red.slice(4, 8)).toEqual([50, 72, 117, 139]);
 	});
 
-	it('бросает ToolError на некорректные размеры', () => {
+	it("бросает ToolError на некорректные размеры", () => {
 		const img = twoByTwo();
 		expect(() => resize(img, 0, 10)).toThrow(/errors\.sizeInt/);
 		expect(() => resize(img, 10.5, 10)).toThrow(/errors\.sizeInt/);

web/src/lib/core/geometry.ts

@@ -1,6 +1,6 @@
-import { parseHex } from './alpha';
-import { ToolError } from './errors';
-import { clonePixelImage, createPixelImage, type PixelImage } from './types';
+import { parseHex } from "./alpha";
+import { ToolError } from "./errors";
+import { clonePixelImage, createPixelImage, type PixelImage } from "./types";
 
 export function expandCanvas(
 	img: PixelImage,
@@ -8,7 +8,7 @@ export function expandCanvas(
 	top: number,
 	right: number,
 	bottom: number,
-	backgroundHex?: string
+	backgroundHex?: string,
 ): PixelImage {
 	const l = Math.max(0, Math.trunc(left));
 	const t = Math.max(0, Math.trunc(top));
@@ -28,13 +28,17 @@ export function expandCanvas(
 		const srcStart = y * img.width * 4;
 		out.data.set(
 			img.data.subarray(srcStart, srcStart + img.width * 4),
-			((y + t) * out.width + l) * 4
+			((y + t) * out.width + l) * 4,
 		);
 	}
 	return out;
 }
 
-export function tile(img: PixelImage, columns: number, rows: number): PixelImage {
+export function tile(
+	img: PixelImage,
+	columns: number,
+	rows: number,
+): PixelImage {
 	const cols = Math.max(1, Math.trunc(columns));
 	const rowsCount = Math.max(1, Math.trunc(rows));
 	const out = createPixelImage(img.width * cols, img.height * rowsCount);
@@ -44,7 +48,7 @@ export function tile(img: PixelImage, columns: number, rows: number): PixelImage
 				const srcStart = y * img.width * 4;
 				out.data.set(
 					img.data.subarray(srcStart, srcStart + img.width * 4),
-					((ty * img.height + y) * out.width + tx * img.width) * 4
+					((ty * img.height + y) * out.width + tx * img.width) * 4,
 				);
 			}
 		}
@@ -75,20 +79,20 @@ export function centerByAlpha(img: PixelImage): PixelImage {
 	for (let y = 0; y < content.height; y++) {
 		out.data.set(
 			content.data.subarray(y * content.width * 4, (y + 1) * content.width * 4),
-			((y + dy) * out.width + dx) * 4
+			((y + dy) * out.width + dx) * 4,
 		);
 	}
 	return out;
 }
 
-export type FlipAxis = 'horizontal' | 'vertical';
+export type FlipAxis = "horizontal" | "vertical";
 
 export function flip(img: PixelImage, axis: FlipAxis): PixelImage {
 	const out = createPixelImage(img.width, img.height);
 	for (let y = 0; y < img.height; y++) {
 		for (let x = 0; x < img.width; x++) {
-			const sx = axis === 'horizontal' ? img.width - 1 - x : x;
-			const sy = axis === 'vertical' ? img.height - 1 - y : y;
+			const sx = axis === "horizontal" ? img.width - 1 - x : x;
+			const sy = axis === "vertical" ? img.height - 1 - y : y;
 			copyPixel(img, sx, sy, out, x, y);
 		}
 	}
@@ -120,7 +124,7 @@ export function crop(
 	x: number,
 	y: number,
 	width: number,
-	height: number
+	height: number,
 ): PixelImage {
 	const sx = clampInt(x, 0, img.width);
 	const sy = clampInt(y, 0, img.height);
@@ -129,7 +133,7 @@ export function crop(
 	const w = ex - sx;
 	const h = ey - sy;
 	if (w <= 0 || h <= 0) {
-		throw new ToolError('errors.cropBounds');
+		throw new ToolError("errors.cropBounds");
 	}
 	const out = createPixelImage(w, h);
 	for (let row = 0; row < h; row++) {
@@ -139,9 +143,18 @@ export function crop(
 	return out;
 }
 
-export function resize(img: PixelImage, width: number, height: number): PixelImage {
-	if (!Number.isInteger(width) || !Number.isInteger(height) || width < 1 || height < 1) {
-		throw new ToolError('errors.sizeInt');
+export function resize(
+	img: PixelImage,
+	width: number,
+	height: number,
+): PixelImage {
+	if (
+		!Number.isInteger(width) ||
+		!Number.isInteger(height) ||
+		width < 1 ||
+		height < 1
+	) {
+		throw new ToolError("errors.sizeInt");
 	}
 	const out = createPixelImage(width, height);
 	const xr = img.width / width;
@@ -173,7 +186,14 @@ export function resize(img: PixelImage, width: number, height: number): PixelIma
 	return out;
 }
 
-function copyPixel(src: PixelImage, sx: number, sy: number, dst: PixelImage, dx: number, dy: number): void {
+function copyPixel(
+	src: PixelImage,
+	sx: number,
+	sy: number,
+	dst: PixelImage,
+	dx: number,
+	dy: number,
+): void {
 	const si = (sy * src.width + sx) * 4;
 	const di = (dy * dst.width + dx) * 4;
 	dst.data[di] = src.data[si];
@@ -185,7 +205,7 @@ function copyPixel(src: PixelImage, sx: number, sy: number, dst: PixelImage, dx:
 export function sampleBilinear(
 	img: PixelImage,
 	fx: number,
-	fy: number
+	fy: number,
 ): [number, number, number, number] {
 	const maxX = img.width - 1;
 	const maxY = img.height - 1;
@@ -213,24 +233,22 @@ export function sampleBilinear(
 function clampInt(value: number, min: number, max: number): number {
 	return Math.min(max, Math.max(min, Math.trunc(value)));
 }
-
-
 
 export type Anchor9 =
-	| 'top-left'
-	| 'top-center'
-	| 'top-right'
-	| 'middle-left'
-	| 'center'
-	| 'middle-right'
-	| 'bottom-left'
-	| 'bottom-center'
-	| 'bottom-right';
+	| "top-left"
+	| "top-center"
+	| "top-right"
+	| "middle-left"
+	| "center"
+	| "middle-right"
+	| "bottom-left"
+	| "bottom-center"
+	| "bottom-right";
 
 /** Границы контента: пиксели с альфой строго больше порога. Пустое изображение → null. */
 export function contentBounds(
 	img: PixelImage,
-	alphaThreshold = 0
+	alphaThreshold = 0,
 ): { x: number; y: number; w: number; h: number } | null {
 	let minX = img.width;
 	let minY = img.height;
@@ -262,11 +280,19 @@ export function changeCanvasSize(
 	img: PixelImage,
 	width: number,
 	height: number,
-	anchor: Anchor9
+	anchor: Anchor9,
 ): PixelImage {
 	const out = createPixelImage(width, height);
-	const pasteX = anchor.endsWith('-left') ? 0 : anchor.endsWith('-right') ? width - img.width : Math.floor((width - img.width) / 2);
-	const pasteY = anchor.startsWith('top-') ? 0 : anchor.startsWith('bottom-') ? height - img.height : Math.floor((height - img.height) / 2);
+	const pasteX = anchor.endsWith("-left")
+		? 0
+		: anchor.endsWith("-right")
+			? width - img.width
+			: Math.floor((width - img.width) / 2);
+	const pasteY = anchor.startsWith("top-")
+		? 0
+		: anchor.startsWith("bottom-")
+			? height - img.height
+			: Math.floor((height - img.height) / 2);
 	for (let y = 0; y < height; y++) {
 		const sy = y - pasteY;
 		if (sy < 0 || sy >= img.height) continue;
@@ -307,13 +333,21 @@ export function padToRatio(img: PixelImage, ratio: number): PixelImage {
 	else if (current < ratio) w = Math.round(h * ratio);
 	w = Math.max(1, w);
 	h = Math.max(1, h);
-	return changeCanvasSize(img, w, h, 'center');
+	return changeCanvasSize(img, w, h, "center");
 }
 
 /** Разворачивает изображение на 90°, если его ориентация не совпадает с целевой. Квадрат не трогает. */
-export function forceOrientation(img: PixelImage, target: 'portrait' | 'landscape'): PixelImage {
-	const current = img.width > img.height ? 'landscape' : img.width < img.height ? 'portrait' : 'square';
-	if (current === target || current === 'square') return clonePixelImage(img);
+export function forceOrientation(
+	img: PixelImage,
+	target: "portrait" | "landscape",
+): PixelImage {
+	const current =
+		img.width > img.height
+			? "landscape"
+			: img.width < img.height
+				? "portrait"
+				: "square";
+	if (current === target || current === "square") return clonePixelImage(img);
 	return rotate90(img, 1);
 }
 
@@ -323,14 +357,14 @@ export function forceOrientation(img: PixelImage, target: 'portrait' | 'landscap
  */
 export function symmetricCopy(
 	img: PixelImage,
-	axis: 'vertical' | 'horizontal',
-	keepSide: 'left' | 'right' | 'top' | 'bottom'
+	axis: "vertical" | "horizontal",
+	keepSide: "left" | "right" | "top" | "bottom",
 ): PixelImage {
-	if (axis === 'vertical') {
+	if (axis === "vertical") {
 		const out = createPixelImage(img.width * 2, img.height);
 		for (let y = 0; y < img.height; y++) {
 			for (let x = 0; x < img.width; x++) {
-				const srcX = keepSide === 'left' ? x : img.width - 1 - x;
+				const srcX = keepSide === "left" ? x : img.width - 1 - x;
 				const di = (y * out.width + x) * 4;
 				const si = (y * img.width + srcX) * 4;
 				out.data[di] = img.data[si];
@@ -349,7 +383,7 @@ export function symmetricCopy(
 	}
 	const out = createPixelImage(img.width, img.height * 2);
 	for (let y = 0; y < img.height; y++) {
-		const srcY = keepSide === 'top' ? y : img.height - 1 - y;
+		const srcY = keepSide === "top" ? y : img.height - 1 - y;
 		for (let x = 0; x < img.width; x++) {
 			const si = (srcY * img.width + x) * 4;
 			const dTop = (y * out.width + x) * 4;
@@ -366,4 +400,4 @@ export function symmetricCopy(
 		}
 	}
 	return out;
-}
+}

web/src/lib/core/io.test.ts

@@ -1,32 +1,40 @@
-import { describe, expect, it } from 'vitest';
-import { isSupportedImage, unsupportedImageError } from './io';
+import { describe, expect, it } from "vitest";
+import { isSupportedImage, unsupportedImageError } from "./io";
 
-describe('isSupportedImage', () => {
-	it.each(['image/png', 'image/jpeg', 'image/webp', 'image/gif', 'image/bmp', 'image/x-icon'])(
-		'принимает %s',
-		(type) => {
-			expect(isSupportedImage(new File([], 'x', { type }))).toBe(true);
-		}
-	);
-
-	it('отклоняет неподдерживаемый тип', () => {
-		expect(isSupportedImage(new File([], 'a.txt', { type: 'text/plain' }))).toBe(false);
+describe("isSupportedImage", () => {
+	it.each([
+		"image/png",
+		"image/jpeg",
+		"image/webp",
+		"image/gif",
+		"image/bmp",
+		"image/x-icon",
+	])("принимает %s", (type) => {
+		expect(isSupportedImage(new File([], "x", { type }))).toBe(true);
 	});
 
-	it('отклоняет файл без типа', () => {
-		expect(isSupportedImage(new File([], 'x'))).toBe(false);
+	it("отклоняет неподдерживаемый тип", () => {
+		expect(
+			isSupportedImage(new File([], "a.txt", { type: "text/plain" })),
+		).toBe(false);
+	});
+
+	it("отклоняет файл без типа", () => {
+		expect(isSupportedImage(new File([], "x"))).toBe(false);
 	});
 });
 
-describe('unsupportedImageError', () => {
-	it('ключ ошибки и тип файла в vars', () => {
-		const err = unsupportedImageError(new File([], 'a.txt', { type: 'text/plain' }));
-		expect(err.key).toBe('errors.unsupportedFile');
-		expect(err.vars?.type).toBe('text/plain');
+describe("unsupportedImageError", () => {
+	it("ключ ошибки и тип файла в vars", () => {
+		const err = unsupportedImageError(
+			new File([], "a.txt", { type: "text/plain" }),
+		);
+		expect(err.key).toBe("errors.unsupportedFile");
+		expect(err.vars?.type).toBe("text/plain");
 	});
 
-	it('пустой тип передаётся как unknown', () => {
-		const err = unsupportedImageError(new File([], 'x'));
-		expect(err.vars?.type).toBe('unknown');
+	it("пустой тип передаётся как unknown", () => {
+		const err = unsupportedImageError(new File([], "x"));
+		expect(err.vars?.type).toBe("unknown");
 	});
 });

web/src/lib/core/io.ts

@@ -1,33 +1,40 @@
-import { encodeBmpBytes } from './bmp';
-import { ToolError } from './errors';
-import { type PixelImage } from './types';
+import { encodeBmpBytes } from "./bmp";
+import { ToolError } from "./errors";
+import { type PixelImage } from "./types";
 
-export type OutputMime = 'image/png' | 'image/jpeg' | 'image/webp' | 'image/bmp';
+export type OutputMime =
+	"image/png" | "image/jpeg" | "image/webp" | "image/bmp";
 
 export const ACCEPTED_IMAGE_TYPES =
-	'image/png,image/jpeg,image/webp,image/gif,image/bmp,image/x-icon';
+	"image/png,image/jpeg,image/webp,image/gif,image/bmp,image/x-icon";
 
-const SUPPORTED_MIME_TYPES = new Set(ACCEPTED_IMAGE_TYPES.split(','));
+const SUPPORTED_MIME_TYPES = new Set(ACCEPTED_IMAGE_TYPES.split(","));
 
 export function isSupportedImage(file: File): boolean {
 	return SUPPORTED_MIME_TYPES.has(file.type);
 }
 
-export function unsupportedImageError(file: File): ToolError {
-	return new ToolError('errors.unsupportedFile', { type: file.type || 'unknown' });
+export function unsupportedImageError(file: File): ToolError {
+	return new ToolError("errors.unsupportedFile", {
+		type: file.type || "unknown",
+	});
 }
 
 async function decodeBitmap(bitmap: ImageBitmap): Promise<PixelImage> {
-	const canvas = document.createElement('canvas');
+	const canvas = document.createElement("canvas");
 	canvas.width = bitmap.width;
 	canvas.height = bitmap.height;
-	const ctx = canvas.getContext('2d', { willReadFrequently: true });
+	const ctx = canvas.getContext("2d", { willReadFrequently: true });
 	if (!ctx) {
-		throw new ToolError('errors.noCanvasCtx');
+		throw new ToolError("errors.noCanvasCtx");
 	}
 	ctx.drawImage(bitmap, 0, 0);
 	const imageData = ctx.getImageData(0, 0, canvas.width, canvas.height);
-	return { width: imageData.width, height: imageData.height, data: imageData.data };
+	return {
+		width: imageData.width,
+		height: imageData.height,
+		data: imageData.data,
+	};
 }
 
 export async function decodeFile(file: File): Promise<PixelImage> {
@@ -39,7 +46,9 @@ export async function decodeFile(file: File): Promise<PixelImage> {
 	}
 }
 
-export async function decodeBytes(bytes: Uint8Array<ArrayBuffer>): Promise<PixelImage> {
+export async function decodeBytes(
+	bytes: Uint8Array<ArrayBuffer>,
+): Promise<PixelImage> {
 	const blob = new Blob([bytes]);
 	const bitmap = await createImageBitmap(blob);
 	try {
@@ -50,25 +59,25 @@ export async function decodeBytes(bytes: Uint8Array<ArrayBuffer>): Promise<Pixel
 }
 
 export function toDataUrl(img: PixelImage): string {
-	const canvas = document.createElement('canvas');
+	const canvas = document.createElement("canvas");
 	canvas.width = img.width;
 	canvas.height = img.height;
-	const ctx = canvas.getContext('2d');
+	const ctx = canvas.getContext("2d");
 	if (!ctx) {
-		throw new ToolError('errors.noCanvasCtx');
+		throw new ToolError("errors.noCanvasCtx");
 	}
 	ctx.putImageData(new ImageData(img.data, img.width, img.height), 0, 0);
-	return canvas.toDataURL('image/png');
+	return canvas.toDataURL("image/png");
 }
 
 export function toBase64(img: PixelImage): string {
-	return toDataUrl(img).slice('data:image/png;base64,'.length);
+	return toDataUrl(img).slice("data:image/png;base64,".length);
 }
 
 export async function decodeTextImage(text: string): Promise<PixelImage> {
-	const cleaned = text.trim().replace(/^data:[^,]*,/, '');
+	const cleaned = text.trim().replace(/^data:[^,]*,/, "");
 	if (cleaned.length === 0) {
-		throw new ToolError('errors.badBase64');
+		throw new ToolError("errors.badBase64");
 	}
 	const binary = atob(cleaned);
 	const bytes = Uint8Array.from(binary, (ch) => ch.charCodeAt(0));
@@ -77,44 +86,48 @@ export async function decodeTextImage(text: string): Promise<PixelImage> {
 
 export async function encode(
 	img: PixelImage,
-	mime: OutputMime = 'image/png',
-	quality?: number
+	mime: OutputMime = "image/png",
+	quality?: number,
 ): Promise<Blob> {
-	if (mime === 'image/bmp') {
+	if (mime === "image/bmp") {
 		return new Blob([encodeBmpBytes(img)], { type: mime });
 	}
-	if (mime === 'image/jpeg' || mime === 'image/webp') {
+	if (mime === "image/jpeg" || mime === "image/webp") {
 		if (quality !== undefined && (quality < 0 || quality > 1)) {
-			throw new ToolError('errors.qualityRange');
+			throw new ToolError("errors.qualityRange");
 		}
 	}
-	const canvas = document.createElement('canvas');
+	const canvas = document.createElement("canvas");
 	canvas.width = img.width;
 	canvas.height = img.height;
-	const ctx = canvas.getContext('2d');
+	const ctx = canvas.getContext("2d");
 	if (!ctx) {
-		throw new ToolError('errors.noCanvasCtx');
+		throw new ToolError("errors.noCanvasCtx");
 	}
 	ctx.putImageData(new ImageData(img.data, img.width, img.height), 0, 0);
 	return await canvasToBlob(canvas, mime, quality);
 }
 
-function canvasToBlob(canvas: HTMLCanvasElement, mime: OutputMime, quality?: number): Promise<Blob> {
+function canvasToBlob(
+	canvas: HTMLCanvasElement,
+	mime: OutputMime,
+	quality?: number,
+): Promise<Blob> {
 	return new Promise((resolve, reject) => {
 		canvas.toBlob(
-			(blob) =>
-				blob
-					? resolve(blob)
-					: reject(new ToolError('errors.encodeUnsupported', { mime })),
+			(blob) =>
+				blob
+					? resolve(blob)
+					: reject(new ToolError("errors.encodeUnsupported", { mime })),
 			mime,
-			quality
+			quality,
 		);
 	});
 }
 
 export function downloadBlob(blob: Blob, filename: string): void {
 	const url = URL.createObjectURL(blob);
-	const a = document.createElement('a');
+	const a = document.createElement("a");
 	a.href = url;
 	a.download = filename;
 	document.body.append(a);
@@ -124,43 +137,54 @@ export function downloadBlob(blob: Blob, filename: string): void {
 }
 
 export function replaceExtension(filename: string, ext: string): string {
-	const base = filename.replace(/\.[^./\\]+$/, '');
+	const base = filename.replace(/\.[^./\\]+$/, "");
 	return `${base}.${ext}`;
 }
 
-export async function decodeSvgText(text: string, targetWidth?: number): Promise<PixelImage> {
+export async function decodeSvgText(
+	text: string,
+	targetWidth?: number,
+): Promise<PixelImage> {
 	const trimmed = text.trim();
 	if (trimmed.length === 0) {
-		throw new ToolError('errors.svgSize');
+		throw new ToolError("errors.svgSize");
 	}
-	const blob = new Blob([trimmed], { type: 'image/svg+xml' });
+	const blob = new Blob([trimmed], { type: "image/svg+xml" });
 	const url = URL.createObjectURL(blob);
 	try {
 		const img = new Image();
 		await new Promise<void>((resolve, reject) => {
 			img.onload = () => resolve();
-			img.onerror = () => reject(new ToolError('errors.svgLoad'));
+			img.onerror = () => reject(new ToolError("errors.svgLoad"));
 			img.src = url;
 		});
 		const w = targetWidth ?? img.naturalWidth ?? 300;
-		const ratio = img.naturalHeight > 0 ? img.naturalHeight / img.naturalWidth : 1;
+		const ratio =
+			img.naturalHeight > 0 ? img.naturalHeight / img.naturalWidth : 1;
 		const h = Math.max(1, Math.round(w * ratio));
-		const canvas = document.createElement('canvas');
+		const canvas = document.createElement("canvas");
 		canvas.width = w;
 		canvas.height = h;
-		const ctx = canvas.getContext('2d', { willReadFrequently: true });
-		if (!ctx) throw new ToolError('errors.noCanvasCtx');
+		const ctx = canvas.getContext("2d", { willReadFrequently: true });
+		if (!ctx) throw new ToolError("errors.noCanvasCtx");
 		ctx.drawImage(img, 0, 0, w, h);
 		const imageData = ctx.getImageData(0, 0, w, h);
-		return { width: imageData.width, height: imageData.height, data: imageData.data };
+		return {
+			width: imageData.width,
+			height: imageData.height,
+			data: imageData.data,
+		};
 	} finally {
 		URL.revokeObjectURL(url);
 	}
 }
 
-export async function jpegRoundtrip(img: PixelImage, qualityPercent: number): Promise<PixelImage> {
+export async function jpegRoundtrip(
+	img: PixelImage,
+	qualityPercent: number,
+): Promise<PixelImage> {
 	const quality = Math.min(Math.max(Math.trunc(qualityPercent), 1), 100) / 100;
-	const jpegBlob = await encode(img, 'image/jpeg', quality);
+	const jpegBlob = await encode(img, "image/jpeg", quality);
 	const bitmap = await createImageBitmap(jpegBlob);
 	try {
 		return await decodeBitmap(bitmap);

web/src/lib/core/masks.test.ts

@@ -1,79 +1,75 @@
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from "vitest";
 import {
 	extractByColor,
 	isGrayscaleish,
 	luma01,
 	rarityPredicate,
-	renderPredicateMask
-} from './masks';
-import { makeImage } from './test-helpers';
+	renderPredicateMask,
+} from "./masks";
+import { makeImage } from "./test-helpers";
 
 const px = makeImage(2, 1, [
 	[255, 0, 0, 255],
-	[10, 10, 10, 255]
+	[10, 10, 10, 255],
 ]);
 
-describe('isGrayscaleish / luma01', () => {
-	it('серый распознаётся с допуском, цветной — нет', () => {
+describe("isGrayscaleish / luma01", () => {
+	it("серый распознаётся с допуском, цветной — нет", () => {
 		expect(isGrayscaleish(10, 10, 10, 0)).toBe(true);
 		expect(isGrayscaleish(12, 10, 11, 2)).toBe(true);
 		expect(isGrayscaleish(255, 0, 0, 0)).toBe(false);
 	});
 
-	it('luma01: белый 1, чёрный 0', () => {
+	it("luma01: белый 1, чёрный 0", () => {
 		expect(luma01(255, 255, 255)).toBeCloseTo(1);
 		expect(luma01(0, 0, 0)).toBeCloseTo(0);
 	});
 });
 
-describe('renderPredicateMask', () => {
-	it('binary: совпавшие белые на чёрном, альфа принудительная', () => {
-		const out = renderPredicateMask(
-			px,
-			(r) => r > 200,
-			{ mode: 'binary' }
-		);
+describe("renderPredicateMask", () => {
+	it("binary: совпавшие белые на чёрном, альфа принудительная", () => {
+		const out = renderPredicateMask(px, (r) => r > 200, { mode: "binary" });
 		expect([...out.data.slice(0, 4)]).toEqual([255, 255, 255, 255]);
 		expect([...out.data.slice(4, 8)]).toEqual([0, 0, 0, 255]);
 	});
 
-	it('highlight: подкрашивает только совпавшие, остальные без изменений', () => {
-		const out = renderPredicateMask(
-			px,
-			(r) => r > 200,
-			{ mode: 'highlight', color: '#0000ff', opacityPercent: 100 }
-		);
+	it("highlight: подкрашивает только совпавшие, остальные без изменений", () => {
+		const out = renderPredicateMask(px, (r) => r > 200, {
+			mode: "highlight",
+			color: "#0000ff",
+			opacityPercent: 100,
+		});
 		expect([...out.data.slice(0, 4)]).toEqual([0, 0, 255, 255]);
 		expect([...out.data.slice(4, 8)]).toEqual([10, 10, 10, 255]);
 	});
 
-	it('прозрачность оригинала сохраняется в highlight-режиме', () => {
+	it("прозрачность оригинала сохраняется в highlight-режиме", () => {
 		const semi = makeImage(1, 1, [[200, 200, 200, 128]]);
 		const out = renderPredicateMask(semi, () => true, {
-			mode: 'highlight',
-			color: '#00ff00',
-			opacityPercent: 50
+			mode: "highlight",
+			color: "#00ff00",
+			opacityPercent: 50,
 		});
 		expect(out.data[3]).toBe(128);
 		expect(out.data[0]).toBeGreaterThan(90);
 	});
 });
 
-describe('rarityPredicate + extractByColor', () => {
+describe("rarityPredicate + extractByColor", () => {
 	const img = makeImage(3, 1, [
 		[255, 0, 0, 255],
 		[255, 0, 0, 255],
-		[0, 255, 0, 255]
+		[0, 255, 0, 255],
 	]);
 
-	it('уникальный (единичный) цвет находится, массовый — нет', () => {
+	it("уникальный (единичный) цвет находится, массовый — нет", () => {
 		const pred = rarityPredicate(img, 1);
 		expect(pred(0, 255, 0, 255)).toBe(true);
 		expect(pred(255, 0, 0, 255)).toBe(false);
 	});
 
-	it('extractByColor оставляет близкие и делает дальние прозрачными', () => {
-		const out = extractByColor(px, '#0a0a0a', 5);
+	it("extractByColor оставляет близкие и делает дальние прозрачными", () => {
+		const out = extractByColor(px, "#0a0a0a", 5);
 		expect(out.data[3]).toBe(0);
 		expect(out.data[7]).toBe(255);
 	});

web/src/lib/core/masks.ts

@@ -1,8 +1,8 @@
-import { hexToRgb } from './palette';
-import type { PixelImage } from './types';
-import { createPixelImage } from './types';
+import { hexToRgb } from "./palette";
+import type { PixelImage } from "./types";
+import { createPixelImage } from "./types";
 
-export type MaskMode = 'binary' | 'highlight';
+export type MaskMode = "binary" | "highlight";
 
 export interface MaskOptions {
 	/** binary: белое/чёрное без альфы; highlight: подкрасить совпавшие пиксели цветом. */
@@ -18,10 +18,10 @@ export interface MaskOptions {
 export function renderPredicateMask(
 	img: PixelImage,
 	predicate: (r: number, g: number, b: number, a: number) => boolean,
-	o: MaskOptions = {}
+	o: MaskOptions = {},
 ): PixelImage {
 	const out = createPixelImage(img.width, img.height);
-	const highlight = o.mode !== 'binary';
+	const highlight = o.mode !== "binary";
 	const tint = o.color ? hexToRgb(o.color) : { r: 255, g: 0, b: 170 };
 	const opacity = Math.min(Math.max(o.opacityPercent ?? 70, 0), 100) / 100;
 	if (!highlight) {
@@ -34,7 +34,7 @@ export function renderPredicateMask(
 		const b = img.data[i + 2];
 		const a = img.data[i + 3];
 		if (!predicate(r, g, b, a)) {
-			if (highlight && o.mode === 'highlight') {
+			if (highlight && o.mode === "highlight") {
 				out.data[i] = r;
 				out.data[i + 1] = g;
 				out.data[i + 2] = b;
@@ -57,13 +57,27 @@ export function renderPredicateMask(
 	return out;
 }
 
-function maxChannelDelta(r1: number, g1: number, b1: number, r2: number, g2: number, b2: number): number {
+function maxChannelDelta(
+	r1: number,
+	g1: number,
+	b1: number,
+	r2: number,
+	g2: number,
+	b2: number,
+): number {
 	return Math.max(Math.abs(r1 - r2), Math.abs(g1 - g2), Math.abs(b1 - b2));
 }
 
-export function isGrayscaleish(r: number, g: number, b: number, tolerance: number): boolean {
+export function isGrayscaleish(
+	r: number,
+	g: number,
+	b: number,
+	tolerance: number,
+): boolean {
 	return (
-		Math.abs(r - g) <= tolerance && Math.abs(g - b) <= tolerance && Math.abs(r - b) <= tolerance
+		Math.abs(r - g) <= tolerance &&
+		Math.abs(g - b) <= tolerance &&
+		Math.abs(r - b) <= tolerance
 	);
 }
 
@@ -78,13 +92,22 @@ export function luma01(r: number, g: number, b: number): number {
 export function extractByColor(
 	img: PixelImage,
 	targetHex: string,
-	tolerancePercent: number
+	tolerancePercent: number,
 ): PixelImage {
 	const out = createPixelImage(img.width, img.height);
 	const t = hexToRgb(targetHex);
 	const tol = (Math.min(Math.max(tolerancePercent, 0), 100) / 100) * 255;
 	for (let i = 0; i < img.data.length; i += 4) {
-		if (maxChannelDelta(img.data[i], img.data[i + 1], img.data[i + 2], t.r, t.g, t.b) <= tol) {
+		if (
+			maxChannelDelta(
+				img.data[i],
+				img.data[i + 1],
+				img.data[i + 2],
+				t.r,
+				t.g,
+				t.b,
+			) <= tol
+		) {
 			out.data[i] = img.data[i];
 			out.data[i + 1] = img.data[i + 1];
 			out.data[i + 2] = img.data[i + 2];
@@ -99,7 +122,7 @@ export function extractByColor(
  */
 export function rarityPredicate(
 	img: PixelImage,
-	limit: number
+	limit: number,
 ): (r: number, g: number, b: number, a: number) => boolean {
 	const counts = new Map<number, number>();
 	for (let i = 0; i < img.data.length; i += 4) {
@@ -111,4 +134,3 @@ export function rarityPredicate(
 		return (counts.get(key) ?? 0) <= limit;
 	};
 }
-

web/src/lib/core/morphology.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from "vitest";
 import {
 	buildAlphaMask,
 	closingImage,
@@ -8,15 +8,15 @@ import {
 	erodeImage,
 	erodeMask,
 	openingImage,
-	strokeImage
-} from './morphology';
-import { makeImage } from './test-helpers';
+	strokeImage,
+} from "./morphology";
+import { makeImage } from "./test-helpers";
 
 function maskFrom(rows: string[]): Uint8Array {
-	const flat = rows.join('');
+	const flat = rows.join("");
 	const mask = new Uint8Array(flat.length);
 	for (let i = 0; i < flat.length; i++) {
-		mask[i] = flat[i] === '#' ? 1 : 0;
+		mask[i] = flat[i] === "#" ? 1 : 0;
 	}
 	return mask;
 }
@@ -24,66 +24,74 @@ function maskFrom(rows: string[]): Uint8Array {
 function toRows(mask: Uint8Array, w: number): string[] {
 	const rows: string[] = [];
 	for (let y = 0; y < mask.length / w; y++) {
-		let row = '';
+		let row = "";
 		for (let x = 0; x < w; x++) {
-			row += mask[y * w + x] === 1 ? '#' : '.';
+			row += mask[y * w + x] === 1 ? "#" : ".";
 		}
 		rows.push(row);
 	}
 	return rows;
 }
 
-describe('dilateMask', () => {
-	it('одиночный пиксель r=1 превращается в плюс', () => {
+describe("dilateMask", () => {
+	it("одиночный пиксель r=1 превращается в плюс", () => {
 		const out = dilateMask(
-			maskFrom(['.....', '.....', '..#..', '.....', '.....']),
+			maskFrom([".....", ".....", "..#..", ".....", "....."]),
 			5,
 			5,
-			1
+			1,
 		);
-		expect(toRows(out, 5)).toEqual(['.....', '..#..', '.###.', '..#..', '.....']);
+		expect(toRows(out, 5)).toEqual([
+			".....",
+			"..#..",
+			".###.",
+			"..#..",
+			".....",
+		]);
 	});
 
-	it('r=2 даёт ромб радиуса 2', () => {
+	it("r=2 даёт ромб радиуса 2", () => {
 		const out = dilateMask(
-			maskFrom(['.....', '.....', '..#..', '.....', '.....']),
+			maskFrom([".....", ".....", "..#..", ".....", "....."]),
 			5,
 			5,
-			2
+			2,
 		);
-		expect(toRows(out, 5)).toEqual(['..#..', '.###.', '#####', '.###.', '..#..']);
+		expect(toRows(out, 5)).toEqual([
+			"..#..",
+			".###.",
+			"#####",
+			".###.",
+			"..#..",
+		]);
 	});
 });
 
-describe('erodeMask', () => {
-	it('сплошной объект во весь кадр не сжимается от границ', () => {
-		const solid = maskFrom(['#####', '#####', '#####', '#####', '#####']);
+describe("erodeMask", () => {
+	it("сплошной объект во весь кадр не сжимается от границ", () => {
+		const solid = maskFrom(["#####", "#####", "#####", "#####", "#####"]);
 		expect([...erodeMask(solid, 5, 5, 1)]).toEqual([...solid]);
 	});
 
-	it('изолированный пиксель исчезает', () => {
+	it("изолированный пиксель исчезает", () => {
 		const out = erodeMask(
-			maskFrom(['.....', '.....', '..#..', '.....', '.....']),
+			maskFrom([".....", ".....", "..#..", ".....", "....."]),
 			5,
 			5,
-			1
+			1,
 		);
 		expect([...out].every((v) => v === 0)).toBe(true);
 	});
 });
 
-describe('opening/closing образы', () => {
-	it('opening убирает отстоящий мусорный пиксель и сохраняет блок', () => {
+describe("opening/closing образы", () => {
+	it("opening убирает отстоящий мусорный пиксель и сохраняет блок", () => {
 		const B = [10, 10, 10, 255];
 		const T = [0, 0, 0, 0];
 		const S = [200, 200, 200, 255];
 		const out = openingImage(
-			makeImage(
-				6,
-				3,
-				[B, B, B, T, S, T, B, B, B, T, T, T, B, B, B, T, T, T]
-			),
-			1
+			makeImage(6, 3, [B, B, B, T, S, T, B, B, B, T, T, T, B, B, B, T, T, T]),
+			1,
 		);
 		const at = (x: number, y: number) => out.data[(y * 6 + x) * 4 + 3];
 		expect(at(0, 1)).toBe(255);
@@ -91,7 +99,7 @@ describe('opening/closing образы', () => {
 		expect(at(4, 1)).toBe(0);
 	});
 
-	it('closing заполняет одиночную прозрачную дыру чёрным', () => {
+	it("closing заполняет одиночную прозрачную дыру чёрным", () => {
 		const pixels: number[][] = [];
 		for (let y = 0; y < 3; y++) {
 			for (let x = 0; x < 3; x++) {
@@ -104,27 +112,32 @@ describe('opening/closing образы', () => {
 	});
 });
 
-describe('image-обёртки', () => {
-	it('dilateImage сохраняет RGB содержимого, новые пиксели непрозрачны', () => {
+describe("image-обёртки", () => {
+	it("dilateImage сохраняет RGB содержимого, новые пиксели непрозрачны", () => {
 		const T = [0, 0, 0, 0];
 		const O = [200, 50, 25, 255];
 		const img = makeImage(5, 2, [T, O, T, T, T, T, T, T, T, T]);
 		const out = dilateImage(img, 1);
 		const at = (x: number, y: number) => {
 			const di = (y * 5 + x) * 4;
-			return [out.data[di], out.data[di + 1], out.data[di + 2], out.data[di + 3]];
+			return [
+				out.data[di],
+				out.data[di + 1],
+				out.data[di + 2],
+				out.data[di + 3],
+			];
 		};
 		expect(at(1, 0)).toEqual([200, 50, 25, 255]);
 		expect(at(0, 0)).toEqual([0, 0, 0, 255]);
 		expect(at(4, 0)[3]).toBe(0);
 	});
 
-	it('erodeImage не стирает объект у края кадра', () => {
+	it("erodeImage не стирает объект у края кадра", () => {
 		const img = makeImage(2, 2, [
 			[10, 20, 30, 255],
 			[10, 20, 30, 255],
 			[10, 20, 30, 255],
-			[10, 20, 30, 255]
+			[10, 20, 30, 255],
 		]);
 		const out = erodeImage(img, 1);
 		for (let i = 0; i < out.data.length; i += 4) {
@@ -133,34 +146,44 @@ describe('image-обёртки', () => {
 	});
 });
 
-describe('strokeImage', () => {
-	it('кольцо цвета обводки вокруг квадрата', () => {
+describe("strokeImage", () => {
+	it("кольцо цвета обводки вокруг квадрата", () => {
 		const pixels: number[][] = [];
 		for (let y = 0; y < 7; y++) {
 			for (let x = 0; x < 7; x++) {
-				pixels.push(x >= 2 && x <= 4 && y >= 2 && y <= 4 ? [255, 0, 0, 255] : [0, 0, 0, 0]);
+				pixels.push(
+					x >= 2 && x <= 4 && y >= 2 && y <= 4
+						? [255, 0, 0, 255]
+						: [0, 0, 0, 0],
+				);
 			}
 		}
-		const out = strokeImage(makeImage(7, 7, pixels), 1, '#0000ff');
-		const at = (x: number, y: number) =>
-			[...out.data.slice((y * 7 + x) * 4, (y * 7 + x) * 4 + 4)];
+		const out = strokeImage(makeImage(7, 7, pixels), 1, "#0000ff");
+		const at = (x: number, y: number) => [
+			...out.data.slice((y * 7 + x) * 4, (y * 7 + x) * 4 + 4),
+		];
 		expect(at(2, 3)).toEqual([255, 0, 0, 255]);
 		expect(at(1, 3)).toEqual([0, 0, 255, 255]);
 		expect(at(0, 0)).toEqual([0, 0, 0, 0]);
 	});
 });
 
-describe('contourImage', () => {
-	it('линия по краю квадрата, центр прозрачен', () => {
+describe("contourImage", () => {
+	it("линия по краю квадрата, центр прозрачен", () => {
 		const pixels: number[][] = [];
 		for (let y = 0; y < 7; y++) {
 			for (let x = 0; x < 7; x++) {
-				pixels.push(x >= 2 && x <= 4 && y >= 2 && y <= 4 ? [255, 0, 0, 255] : [0, 0, 0, 0]);
+				pixels.push(
+					x >= 2 && x <= 4 && y >= 2 && y <= 4
+						? [255, 0, 0, 255]
+						: [0, 0, 0, 0],
+				);
 			}
 		}
-		const out = contourImage(makeImage(7, 7, pixels), 1, '#0000ff');
-		const at = (x: number, y: number) =>
-			[...out.data.slice((y * 7 + x) * 4, (y * 7 + x) * 4 + 4)];
+		const out = contourImage(makeImage(7, 7, pixels), 1, "#0000ff");
+		const at = (x: number, y: number) => [
+			...out.data.slice((y * 7 + x) * 4, (y * 7 + x) * 4 + 4),
+		];
 		expect(at(2, 2)).toEqual([0, 0, 255, 255]);
 		expect(at(3, 3)).toEqual([0, 0, 0, 0]);
 		expect(at(1, 3)).toEqual([0, 0, 0, 0]);

web/src/lib/core/morphology.ts

@@ -1,5 +1,5 @@
-import { parseHex } from './alpha';
-import { clonePixelImage, createPixelImage, type PixelImage } from './types';
+import { parseHex } from "./alpha";
+import { clonePixelImage, createPixelImage, type PixelImage } from "./types";
 
 type Mask = Uint8Array;
 
@@ -25,7 +25,12 @@ export function buildAlphaMask(img: PixelImage): Mask {
 	return mask;
 }
 
-export function dilateMask(mask: Mask, width: number, height: number, radius: number): Mask {
+export function dilateMask(
+	mask: Mask,
+	width: number,
+	height: number,
+	radius: number,
+): Mask {
 	const r = Math.trunc(radius);
 	if (r < 1) return mask.slice();
 	const out = new Uint8Array(mask.length);
@@ -48,7 +53,12 @@ export function dilateMask(mask: Mask, width: number, height: number, radius: nu
 	return out;
 }
 
-export function erodeMask(mask: Mask, width: number, height: number, radius: number): Mask {
+export function erodeMask(
+	mask: Mask,
+	width: number,
+	height: number,
+	radius: number,
+): Mask {
 	const r = Math.trunc(radius);
 	if (r < 1) return mask.slice();
 	const out = new Uint8Array(mask.length);
@@ -89,18 +99,24 @@ export function applyMaskAlpha(img: PixelImage, mask: Mask): PixelImage {
 
 export function dilateImage(img: PixelImage, radiusPx: number): PixelImage {
 	if (radiusPx < 1) return clonePixelImage(img);
-	return applyMaskAlpha(img, dilateMask(buildAlphaMask(img), img.width, img.height, radiusPx));
+	return applyMaskAlpha(
+		img,
+		dilateMask(buildAlphaMask(img), img.width, img.height, radiusPx),
+	);
 }
 
 export function erodeImage(img: PixelImage, radiusPx: number): PixelImage {
 	if (radiusPx < 1) return clonePixelImage(img);
-	return applyMaskAlpha(img, erodeMask(buildAlphaMask(img), img.width, img.height, radiusPx));
+	return applyMaskAlpha(
+		img,
+		erodeMask(buildAlphaMask(img), img.width, img.height, radiusPx),
+	);
 }
 
 export function strokeImage(
 	img: PixelImage,
 	radiusPx: number,
-	colorHex: string
+	colorHex: string,
 ): PixelImage {
 	const r = Math.trunc(radiusPx);
 	if (r < 1) return clonePixelImage(img);
@@ -125,7 +141,11 @@ export function strokeImage(
 	return out;
 }
 
-export function contourImage(img: PixelImage, radiusPx: number, colorHex: string): PixelImage {
+export function contourImage(
+	img: PixelImage,
+	radiusPx: number,
+	colorHex: string,
+): PixelImage {
 	const r = Math.max(1, Math.trunc(radiusPx));
 	const [cr, cg, cb] = parseHex(colorHex);
 	const mask = buildAlphaMask(img);
@@ -147,11 +167,21 @@ export function contourImage(img: PixelImage, radiusPx: number, colorHex: string
 	return out;
 }
 
-export function openingMask(mask: Mask, w: number, h: number, radius: number): Mask {
+export function openingMask(
+	mask: Mask,
+	w: number,
+	h: number,
+	radius: number,
+): Mask {
 	return dilateMask(erodeMask(mask, w, h, radius), w, h, radius);
 }
 
-export function closingMask(mask: Mask, w: number, h: number, radius: number): Mask {
+export function closingMask(
+	mask: Mask,
+	w: number,
+	h: number,
+	radius: number,
+): Mask {
 	return erodeMask(dilateMask(mask, w, h, radius), w, h, radius);
 }
 

web/src/lib/core/palette.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from "vitest";
 import {
 	analogousSet,
 	complementarySet,
@@ -16,60 +16,60 @@ import {
 	shadeSet,
 	sortPalette,
 	triadicSet,
-	tetradicSet
-} from './palette';
+	tetradicSet,
+} from "./palette";
 
-describe('конвертация rgb↔hsl', () => {
-	it('красный → hsl(0,100%,50%) и обратно', () => {
-		const hsl = rgbToHsl(hexToRgb('#ff0000'));
+describe("конвертация rgb↔hsl", () => {
+	it("красный → hsl(0,100%,50%) и обратно", () => {
+		const hsl = rgbToHsl(hexToRgb("#ff0000"));
 		expect(hsl.h).toBeCloseTo(0, 0);
 		expect(hsl.s).toBeCloseTo(1, 5);
 		expect(hsl.l).toBeCloseTo(0.5, 5);
-		expect(rgbToHex(hslToRgb({ h: 0, s: 1, l: 0.5 }))).toBe('#ff0000');
+		expect(rgbToHex(hslToRgb({ h: 0, s: 1, l: 0.5 }))).toBe("#ff0000");
 	});
 
-	it('серые не имеют оттенка', () => {
-		expect(rgbToHsl(hexToRgb('#808080')).s).toBe(0);
+	it("серые не имеют оттенка", () => {
+		expect(rgbToHsl(hexToRgb("#808080")).s).toBe(0);
 	});
 
-	it('круговой переход 360° возвращает исходный цвет', () => {
-		const base = '#3b82f6';
-		expect(rgbToHex(hslToRgb({ ...rgbToHsl(hexToRgb(base)), h: 720 + 30 }))).toBe(
-			rgbToHex(hslToRgb({ ...rgbToHsl(hexToRgb(base)), h: 30 }))
-		);
+	it("круговой переход 360° возвращает исходный цвет", () => {
+		const base = "#3b82f6";
+		expect(
+			rgbToHex(hslToRgb({ ...rgbToHsl(hexToRgb(base)), h: 720 + 30 })),
+		).toBe(rgbToHex(hslToRgb({ ...rgbToHsl(hexToRgb(base)), h: 30 })));
 	});
 });
 
-describe('гармонии', () => {
-	it('complementary — пара с сдвигом 180°', () => {
-		const [a, b] = complementarySet('#ff0000');
-		expect(a).toBe('#ff0000');
+describe("гармонии", () => {
+	it("complementary — пара с сдвигом 180°", () => {
+		const [a, b] = complementarySet("#ff0000");
+		expect(a).toBe("#ff0000");
 		const ha = rgbToHsl(hexToRgb(a)).h;
 		const hb = rgbToHsl(hexToRgb(b)).h;
 		expect(Math.abs((hb - ha + 360) % 360)).toBeCloseTo(180, 0);
 	});
 
-	it('triadic — три цвета через 120°', () => {
-		const set = triadicSet('#ff0000');
+	it("triadic — три цвета через 120°", () => {
+		const set = triadicSet("#ff0000");
 		expect(set).toHaveLength(3);
 		const hues = set.map((h) => rgbToHsl(hexToRgb(h)).h);
 		expect(hues[1] - hues[0]).toBeCloseTo(120, 0);
 		expect(hues[2] - hues[0]).toBeCloseTo(240, 0);
 	});
 
-	it('tetradic — четыре цвета через 90°', () => {
-		const set = tetradicSet('#00ff00');
+	it("tetradic — четыре цвета через 90°", () => {
+		const set = tetradicSet("#00ff00");
 		expect(set).toHaveLength(4);
 	});
 
-	it('analogous симметричен вокруг базы', () => {
-		const set = analogousSet('#0000ff', 30, 5);
+	it("analogous симметричен вокруг базы", () => {
+		const set = analogousSet("#0000ff", 30, 5);
 		expect(set).toHaveLength(5);
-		expect(set[2]).toBe(normalizeHex('#0000ff'));
+		expect(set[2]).toBe(normalizeHex("#0000ff"));
 	});
 
-	it('monochromatic держит оттенок, меняет светлоту', () => {
-		const set = monochromaticSet('#ff8800', 5, 60);
+	it("monochromatic держит оттенок, меняет светлоту", () => {
+		const set = monochromaticSet("#ff8800", 5, 60);
 		expect(set).toHaveLength(5);
 		const hues = new Set(set.map((h) => Math.round(rgbToHsl(hexToRgb(h)).h)));
 		expect(hues.size).toBe(1);
@@ -77,62 +77,67 @@ describe('гармонии', () => {
 		expect(Math.min(...lights)).toBeLessThan(Math.max(...lights));
 	});
 
-	it('shades — тёмный край темнее базы', () => {
-		const set = shadeSet('#88cc44', 4, 70);
+	it("shades — тёмный край темнее базы", () => {
+		const set = shadeSet("#88cc44", 4, 70);
 		const lights = set.map((h) => rgbToHsl(hexToRgb(h)).l);
 		expect(lights[lights.length - 1]).toBeLessThan(lights[0]);
 	});
 });
 
-describe('parseHexList / mixColors / sortPalette', () => {
-	it('парсит список и отбрасывает мусор и токены без решётки', () => {
-		expect(parseHexList('#ff0000, #00FF00 ; 00ff00 zz')).toEqual(['#ff0000', '#00ff00']);
+describe("parseHexList / mixColors / sortPalette", () => {
+	it("парсит список и отбрасывает мусор и токены без решётки", () => {
+		expect(parseHexList("#ff0000, #00FF00 ; 00ff00 zz")).toEqual([
+			"#ff0000",
+			"#00ff00",
+		]);
 	});
 
-	it('пустой валидный список бросает badHex', () => {
-		expect(() => parseHexList('нет цветов')).toThrow(/errors\.badHex/);
+	it("пустой валидный список бросает badHex", () => {
+		expect(() => parseHexList("нет цветов")).toThrow(/errors\.badHex/);
 	});
 
-	it('mixColors — среднее компонент', () => {
-		expect(mixColors(['#000000', '#ffffff'])).toBe('#808080');
+	it("mixColors — среднее компонент", () => {
+		expect(mixColors(["#000000", "#ffffff"])).toBe("#808080");
 	});
 
-	it('sortPalette по luma ставит тёмные раньше', () => {
-		const sorted = sortPalette(['#ffffff', '#000000', '#808080'], 'luma');
-		expect(sorted[0]).toBe('#000000');
-		expect(sorted[2]).toBe('#ffffff');
+	it("sortPalette по luma ставит тёмные раньше", () => {
+		const sorted = sortPalette(["#ffffff", "#000000", "#808080"], "luma");
+		expect(sorted[0]).toBe("#000000");
+		expect(sorted[2]).toBe("#ffffff");
 	});
 });
 
-describe('рендеры', () => {
-	it('renderSwatches strip: колонки по цветам', () => {
-		const img = renderSwatches(['#ff0000', '#00ff00'], 200, 'strip');
+describe("рендеры", () => {
+	it("renderSwatches strip: колонки по цветам", () => {
+		const img = renderSwatches(["#ff0000", "#00ff00"], 200, "strip");
 		expect(img.width).toBe(200);
 		expect(img.data[(Math.floor(img.height / 2) * 200 + 10) * 4 + 3]).toBe(255);
-		expect(img.data[(Math.floor(img.height / 2) * 200 + 10) * 4]).toBeGreaterThan(200);
+		expect(
+			img.data[(Math.floor(img.height / 2) * 200 + 10) * 4],
+		).toBeGreaterThan(200);
 		const right = (Math.floor(img.height / 2) * 200 + 150) * 4;
 		expect(img.data[right]).toBeLessThan(50);
 		expect(img.data[right + 1]).toBeGreaterThan(200);
 	});
 
-	it('renderSwatches grid: квадратные ячейки', () => {
-		const img = renderSwatches(['#111111', '#222222', '#333333'], 120, 'grid');
+	it("renderSwatches grid: квадратные ячейки", () => {
+		const img = renderSwatches(["#111111", "#222222", "#333333"], 120, "grid");
 		expect(img.width).toBe(120);
 		expect(img.height).toBeGreaterThan(0);
 	});
 
-	it('renderWheel: углы прозрачны, центр непрозрачен', () => {
+	it("renderWheel: углы прозрачны, центр непрозрачен", () => {
 		const size = 101;
 		const img = renderWheel(size, 50);
 		expect(img.data[3]).toBe(0);
-		const c = ((Math.floor(size / 2) * size) + Math.floor(size / 2)) * 4;
+		const c = (Math.floor(size / 2) * size + Math.floor(size / 2)) * 4;
 		expect(img.data[c + 3]).toBe(255);
 	});
 
-	it('renderBlend: левый край = a, правый = b', () => {
-		const img = renderBlend('#000000', '#ffffff', 100);
+	it("renderBlend: левый край = a, правый = b", () => {
+		const img = renderBlend("#000000", "#ffffff", 100);
 		expect(img.data[0]).toBe(0);
-		const last = (99 * 4);
+		const last = 99 * 4;
 		expect(img.data[last]).toBe(255);
 	});
 });

web/src/lib/core/palette.ts

@@ -1,25 +1,25 @@
-import { ToolError } from './errors';
-import type { PixelImage } from './types';
-import { createPixelImage } from './types';
+import { ToolError } from "./errors";
+import type { PixelImage } from "./types";
+import { createPixelImage } from "./types";
 
 export type Rgb = { r: number; g: number; b: number };
 export type Hsl = { h: number; s: number; l: number };
 
 export function hexToRgb(hex: string): Rgb {
 	const m = /^#([0-9a-f]{6})$/i.exec(hex.trim());
-	if (!m) throw new ToolError('errors.badHex', { value: hex });
+	if (!m) throw new ToolError("errors.badHex", { value: hex });
 	const d = m[1];
 	return {
 		r: parseInt(d.slice(0, 2), 16),
 		g: parseInt(d.slice(2, 4), 16),
-		b: parseInt(d.slice(4, 6), 16)
+		b: parseInt(d.slice(4, 6), 16),
 	};
 }
 
 const byte = (v: number) =>
 	Math.round(Math.min(255, Math.max(0, v)))
 		.toString(16)
-		.padStart(2, '0');
+		.padStart(2, "0");
 
 export function rgbToHex({ r, g, b }: Rgb): string {
 	return `#${byte(r)}${byte(g)}${byte(b)}`;
@@ -60,7 +60,7 @@ export function hslToRgb({ h, s, l }: Hsl): Rgb {
 	return {
 		r: Math.round((r + m) * 255),
 		g: Math.round((g + m) * 255),
-		b: Math.round((b + m) * 255)
+		b: Math.round((b + m) * 255),
 	};
 }
 
@@ -82,16 +82,31 @@ export function triadicSet(base: string): string[] {
 }
 
 export function tetradicSet(base: string): string[] {
-	return [normalizeHex(base), shiftHue(base, 90), shiftHue(base, 180), shiftHue(base, 270)];
+	return [
+		normalizeHex(base),
+		shiftHue(base, 90),
+		shiftHue(base, 180),
+		shiftHue(base, 270),
+	];
 }
 
-export function analogousSet(base: string, spreadDeg: number, count: number): string[] {
+export function analogousSet(
+	base: string,
+	spreadDeg: number,
+	count: number,
+): string[] {
 	const n = Math.max(3, Math.min(9, Math.round(count)));
 	const half = Math.floor(n / 2);
-	return Array.from({ length: n }, (_, i) => shiftHue(base, (i - half) * spreadDeg));
+	return Array.from({ length: n }, (_, i) =>
+		shiftHue(base, (i - half) * spreadDeg),
+	);
 }
 
-export function monochromaticSet(base: string, count: number, rangePercent: number): string[] {
+export function monochromaticSet(
+	base: string,
+	count: number,
+	rangePercent: number,
+): string[] {
 	const n = Math.max(2, Math.min(9, Math.round(count)));
 	const baseL = rgbToHsl(hexToRgb(normalizeHex(base))).l;
 	const halfSpan = Math.min(0.495, rangePercent / 200);
@@ -102,7 +117,11 @@ export function monochromaticSet(base: string, count: number, rangePercent: numb
 	});
 }
 
-export function shadeSet(base: string, count: number, depthPercent: number): string[] {
+export function shadeSet(
+	base: string,
+	count: number,
+	depthPercent: number,
+): string[] {
 	const n = Math.max(2, Math.min(9, Math.round(count)));
 	const baseL = rgbToHsl(hexToRgb(normalizeHex(base))).l;
 	const floorL = Math.max(0.03, baseL - depthPercent / 100);
@@ -118,24 +137,28 @@ export function parseHexList(text: string): string[] {
 		.map((t) => t.trim())
 		.filter((t) => /^#[0-9a-f]{6}$/i.test(t))
 		.map((t) => normalizeHex(t));
-	if (list.length === 0) throw new ToolError('errors.badHex', { value: text });
+	if (list.length === 0) throw new ToolError("errors.badHex", { value: text });
 	return list;
 }
 
 export function normalizeHex(hex: string): string {
 	const m = /^#([0-9a-f]{6})$/i.exec(hex.trim());
-	if (!m) throw new ToolError('errors.badHex', { value: hex });
+	if (!m) throw new ToolError("errors.badHex", { value: hex });
 	return `#${m[1].toLowerCase()}`;
 }
 
 export function mixColors(hexes: string[]): string {
 	const sum = hexes
 		.map(hexToRgb)
-		.reduce((acc, c) => ({ r: acc.r + c.r, g: acc.g + c.g, b: acc.b + c.b }), { r: 0, g: 0, b: 0 });
+		.reduce((acc, c) => ({ r: acc.r + c.r, g: acc.g + c.g, b: acc.b + c.b }), {
+			r: 0,
+			g: 0,
+			b: 0,
+		});
 	return rgbToHex({
 		r: sum.r / hexes.length,
 		g: sum.g / hexes.length,
-		b: sum.b / hexes.length
+		b: sum.b / hexes.length,
 	});
 }
 
@@ -144,15 +167,17 @@ export function luma(hex: string): number {
 	return 0.2126 * r + 0.7152 * g + 0.0722 * b;
 }
 
-export type SortKey = 'hue' | 'luma' | 'sat';
+export type SortKey = "hue" | "luma" | "sat";
 
 export function sortPalette(hexes: string[], key: SortKey): string[] {
 	const scored = hexes.map((h) => {
-		if (key === 'luma') return { h, k: luma(h) };
+		if (key === "luma") return { h, k: luma(h) };
 		const hsl = rgbToHsl(hexToRgb(h));
-		return { h, k: key === 'hue' ? hsl.h : hsl.s };
+		return { h, k: key === "hue" ? hsl.h : hsl.s };
 	});
-	return scored.sort((a, b) => a.k - b.k || a.h.localeCompare(b.h)).map((s) => s.h);
+	return scored
+		.sort((a, b) => a.k - b.k || a.h.localeCompare(b.h))
+		.map((s) => s.h);
 }
 
 function clamp01(v: number): number {
@@ -160,15 +185,28 @@ function clamp01(v: number): number {
 }
 
 /** Горизонтальные равные колонки-свотчи (strip) или сетка ~квадратных ячеек (grid). */
-export function renderSwatches(colors: string[], width: number, layout: 'strip' | 'grid'): PixelImage {
+export function renderSwatches(
+	colors: string[],
+	width: number,
+	layout: "strip" | "grid",
+): PixelImage {
 	const n = colors.length;
-	if (layout === 'strip') {
+	if (layout === "strip") {
 		const cellW = width / n;
 		const height = Math.max(24, Math.round(cellW));
 		const out = createPixelImage(width, height);
 		colors.forEach((hex, i) => {
 			const { r, g, b } = hexToRgb(hex);
-			fillRect(out, Math.floor(i * cellW), 0, Math.ceil(cellW), height, r, g, b);
+			fillRect(
+				out,
+				Math.floor(i * cellW),
+				0,
+				Math.ceil(cellW),
+				height,
+				r,
+				g,
+				b,
+			);
 		});
 		return out;
 	}
@@ -179,7 +217,16 @@ export function renderSwatches(colors: string[], width: number, layout: 'strip'
 	const out = createPixelImage(width, height);
 	colors.forEach((hex, i) => {
 		const { r, g, b } = hexToRgb(hex);
-		fillRect(out, (i % cols) * cell, Math.floor(i / cols) * cell, cell, cell, r, g, b);
+		fillRect(
+			out,
+			(i % cols) * cell,
+			Math.floor(i / cols) * cell,
+			cell,
+			cell,
+			r,
+			g,
+			b,
+		);
 	});
 	return out;
 }
@@ -222,13 +269,17 @@ export function renderBlend(a: string, b: string, width: number): PixelImage {
 			height,
 			Math.round(ca.r + (cb.r - ca.r) * t),
 			Math.round(ca.g + (cb.g - ca.g) * t),
-			Math.round(ca.b + (cb.b - ca.b) * t)
+			Math.round(ca.b + (cb.b - ca.b) * t),
 		);
 	}
 	return out;
 }
 
-export function stepColors(aHex: string, bHex: string, steps: number): string[] {
+export function stepColors(
+	aHex: string,
+	bHex: string,
+	steps: number,
+): string[] {
 	const n = Math.max(2, Math.min(12, Math.round(steps)));
 	const ca = hexToRgb(aHex);
 	const cb = hexToRgb(bHex);
@@ -237,7 +288,7 @@ export function stepColors(aHex: string, bHex: string, steps: number): string[]
 		return rgbToHex({
 			r: ca.r + (cb.r - ca.r) * t,
 			g: ca.g + (cb.g - ca.g) * t,
-			b: ca.b + (cb.b - ca.b) * t
+			b: ca.b + (cb.b - ca.b) * t,
 		});
 	});
 }
@@ -250,7 +301,7 @@ function fillRect(
 	h: number,
 	r: number,
 	g: number,
-	b: number
+	b: number,
 ): void {
 	for (let y = y0; y < Math.min(y0 + h, img.height); y++) {
 		for (let x = x0; x < Math.min(x0 + w, img.width); x++) {

web/src/lib/core/pixel-fx.test.ts

@@ -1,63 +1,71 @@
-import { describe, expect, it } from 'vitest';
-import { addNoise, defringe, featherAlpha, mulberry32, pixelate, shuffleBlocks, silhouette } from './pixel-fx';
-import { makeImage } from './test-helpers';
+import { describe, expect, it } from "vitest";
+import {
+	addNoise,
+	defringe,
+	featherAlpha,
+	mulberry32,
+	pixelate,
+	shuffleBlocks,
+	silhouette,
+} from "./pixel-fx";
+import { makeImage } from "./test-helpers";
 
-describe('pixelate', () => {
-	it('блок усредняется: шахматка 2×2 с блоком 2 → один цвет', () => {
+describe("pixelate", () => {
+	it("блок усредняется: шахматка 2×2 с блоком 2 → один цвет", () => {
 		const img = makeImage(2, 2, [
 			[0, 0, 0, 255],
 			[200, 200, 200, 255],
 			[100, 100, 100, 255],
-			[140, 140, 140, 255]
+			[140, 140, 140, 255],
 		]);
 		const out = pixelate(img, 2);
 		expect(out.data[0]).toBeCloseTo(110, 0);
 		expect(out.data[4]).toBeCloseTo(110, 0);
 	});
 
-	it('однотонное изображение не меняется', () => {
+	it("однотонное изображение не меняется", () => {
 		const img = makeImage(3, 3, new Array(9).fill([50, 60, 70, 255]));
 		expect([...pixelate(img, 2).data]).toEqual([...img.data]);
 	});
 });
 
-describe('shuffleBlocks / addNoise — детерминизм по seed', () => {
-	it('тот же seed даёт то же перемешивание', () => {
+describe("shuffleBlocks / addNoise — детерминизм по seed", () => {
+	it("тот же seed даёт то же перемешивание", () => {
 		const img = makeImage(4, 1, [
 			[10, 0, 0, 255],
 			[20, 0, 0, 255],
 			[30, 0, 0, 255],
-			[40, 0, 0, 255]
+			[40, 0, 0, 255],
 		]);
 		const a = shuffleBlocks(img, 1, 7);
 		const b = shuffleBlocks(img, 1, 7);
 		expect([...a.data]).toEqual([...b.data]);
 	});
 
-	it('мультимножество пикселей сохраняется (перестановка)', () => {
+	it("мультимножество пикселей сохраняется (перестановка)", () => {
 		const img = makeImage(4, 1, [
 			[10, 0, 0, 255],
 			[20, 0, 0, 255],
 			[30, 0, 0, 255],
-			[40, 0, 0, 255]
+			[40, 0, 0, 255],
 		]);
-		const out = [...shuffleBlocks(img, 1, 99).data.filter((_, i) => i % 4 === 0)].sort(
-			(x, y) => x - y
-		);
+		const out = [
+			...shuffleBlocks(img, 1, 99).data.filter((_, i) => i % 4 === 0),
+		].sort((x, y) => x - y);
 		expect(out).toEqual([10, 20, 30, 40]);
 	});
 
-	it('addNoise при том же seed воспроизводим, amount=0 — идентичность', () => {
+	it("addNoise при том же seed воспроизводим, amount=0 — идентичность", () => {
 		const img = makeImage(2, 2, new Array(4).fill([128, 64, 32, 255]));
-		const a = addNoise(img, 20, 'mono', 5);
-		const b = addNoise(img, 20, 'mono', 5);
+		const a = addNoise(img, 20, "mono", 5);
+		const b = addNoise(img, 20, "mono", 5);
 		expect([...a.data]).toEqual([...b.data]);
-		expect([...addNoise(img, 0, 'mono', 999).data]).toEqual([...img.data]);
+		expect([...addNoise(img, 0, "mono", 999).data]).toEqual([...img.data]);
 	});
 });
 
-describe('featherAlpha', () => {
-	it('жёсткий край получает промежуточные альфы', () => {
+describe("featherAlpha", () => {
+	it("жёсткий край получает промежуточные альфы", () => {
 		// левая половина непрозрачная, правая прозрачная
 		const img = makeImage(6, 1, [
 			[255, 0, 0, 255],
@@ -65,7 +73,7 @@ describe('featherAlpha', () => {
 			[255, 0, 0, 255],
 			[255, 0, 0, 0],
 			[255, 0, 0, 0],
-			[255, 0, 0, 0]
+			[255, 0, 0, 0],
 		]);
 		const out = featherAlpha(img, 1);
 		const alphas = [0, 1, 2].map((x) => out.data[x * 4 + 3]);
@@ -74,11 +82,11 @@ describe('featherAlpha', () => {
 	});
 });
 
-describe('defringe', () => {
-	it('полупрозрачному пикселю берётся RGB от соседнего непрозрачного', () => {
+describe("defringe", () => {
+	it("полупрозрачному пикселю берётся RGB от соседнего непрозрачного", () => {
 		const img = makeImage(2, 1, [
 			[250, 250, 250, 255],
-			[255, 0, 0, 128]
+			[255, 0, 0, 128],
 		]);
 		const out = defringe(img, 2);
 		expect(out.data[4]).toBe(250);
@@ -86,30 +94,30 @@ describe('defringe', () => {
 		expect(out.data[7]).toBe(128); // альфа сохранена
 	});
 
-	it('полностью прозрачные области не трогаются', () => {
+	it("полностью прозрачные области не трогаются", () => {
 		const img = makeImage(2, 1, [
 			[250, 250, 250, 255],
-			[0, 0, 0, 0]
+			[0, 0, 0, 0],
 		]);
 		const out = defringe(img, 2);
 		expect(out.data[4 + 3]).toBe(0);
 	});
 });
 
-describe('silhouette', () => {
-	it('видимые пиксели заливаются цветом, ниже порога — прозрачность', () => {
+describe("silhouette", () => {
+	it("видимые пиксели заливаются цветом, ниже порога — прозрачность", () => {
 		const img = makeImage(2, 1, [
 			[123, 45, 67, 255],
-			[123, 45, 67, 10]
+			[123, 45, 67, 10],
 		]);
-		const out = silhouette(img, '#00ff00', 50);
+		const out = silhouette(img, "#00ff00", 50);
 		expect([...out.data.slice(0, 4)]).toEqual([0, 255, 0, 255]);
 		expect(out.data[4 + 3]).toBe(0);
 	});
 });
 
-describe('mulberry32', () => {
-	it('последовательность детерминирована', () => {
+describe("mulberry32", () => {
+	it("последовательность детерминирована", () => {
 		const a = mulberry32(42);
 		const b = mulberry32(42);
 		expect([a(), a(), a()]).toEqual([b(), b(), b()]);

web/src/lib/core/pixel-fx.ts

@@ -1,7 +1,7 @@
-import { hexToRgb } from './palette';
-import type { PixelImage } from './types';
-import { createPixelImage } from './types';
-import { gaussianBlur } from './convolution';
+import { hexToRgb } from "./palette";
+import type { PixelImage } from "./types";
+import { createPixelImage } from "./types";
+import { gaussianBlur } from "./convolution";
 
 /** Детерминированный ГПСЧ (mulberry32): одинаковый seed — одинаковый результат. */
 export function mulberry32(seed: number): () => number {
@@ -59,7 +59,11 @@ export function pixelate(img: PixelImage, blockSize: number): PixelImage {
 }
 
 /** Перемешивает блоки blockSize×Blocksize между собой детерминированно по seed. */
-export function shuffleBlocks(img: PixelImage, blockSize: number, seed: number): PixelImage {
+export function shuffleBlocks(
+	img: PixelImage,
+	blockSize: number,
+	seed: number,
+): PixelImage {
 	const bs = Math.max(1, Math.round(blockSize));
 	const cols = Math.ceil(img.width / bs);
 	const rows = Math.ceil(img.height / bs);
@@ -92,28 +96,32 @@ export function shuffleBlocks(img: PixelImage, blockSize: number, seed: number):
 	return out;
 }
 
-export type NoiseMode = 'mono' | 'color';
+export type NoiseMode = "mono" | "color";
 
 /** Зерно: amountPercent — сила отклонения от оригинала. Детерминировано по seed. */
 export function addNoise(
 	img: PixelImage,
 	amountPercent: number,
 	mode: NoiseMode,
-	seed: number
+	seed: number,
 ): PixelImage {
 	const out = createPixelImage(img.width, img.height);
 	const amount = Math.min(Math.max(amountPercent, 0), 100) / 100;
 	const rng = mulberry32(seed);
 	for (let i = 0; i < img.data.length; i += 4) {
 		const shift = (rng() * 2 - 1) * amount * 255;
-		if (mode === 'mono') {
+		if (mode === "mono") {
 			out.data[i] = clampByte(img.data[i] + shift);
 			out.data[i + 1] = clampByte(img.data[i + 1] + shift);
 			out.data[i + 2] = clampByte(img.data[i + 2] + shift);
 		} else {
 			out.data[i] = clampByte(img.data[i] + (rng() * 2 - 1) * amount * 255);
-			out.data[i + 1] = clampByte(img.data[i + 1] + (rng() * 2 - 1) * amount * 255);
-			out.data[i + 2] = clampByte(img.data[i + 2] + (rng() * 2 - 1) * amount * 255);
+			out.data[i + 1] = clampByte(
+				img.data[i + 1] + (rng() * 2 - 1) * amount * 255,
+			);
+			out.data[i + 2] = clampByte(
+				img.data[i + 2] + (rng() * 2 - 1) * amount * 255,
+			);
 		}
 		out.data[i + 3] = img.data[i + 3];
 	}
@@ -160,7 +168,8 @@ export function defringe(img: PixelImage, radius: number): PixelImage {
 						if (Math.max(Math.abs(dx), Math.abs(dy)) !== ry) continue;
 						const nx = x + dx;
 						const ny = y + dy;
-						if (nx < 0 || ny < 0 || nx >= img.width || ny >= img.height) continue;
+						if (nx < 0 || ny < 0 || nx >= img.width || ny >= img.height)
+							continue;
 						const si = (ny * img.width + nx) * 4;
 						if (img.data[si + 3] !== 255) continue;
 						out.data[di] = img.data[si];
@@ -176,7 +185,11 @@ export function defringe(img: PixelImage, radius: number): PixelImage {
 }
 
 /** Силуэт: все видимые пиксели заливаются одним цветом, альфа сохраняется. */
-export function silhouette(img: PixelImage, colorHex: string, alphaThreshold: number): PixelImage {
+export function silhouette(
+	img: PixelImage,
+	colorHex: string,
+	alphaThreshold: number,
+): PixelImage {
 	const out = createPixelImage(img.width, img.height);
 	const { r, g, b } = hexToRgb(colorHex);
 	for (let i = 0; i < img.data.length; i += 4) {

web/src/lib/core/quantize.test.ts

@@ -1,37 +1,42 @@
-import { describe, expect, it } from 'vitest';
-import { ditherImage, mapToNearest, medianCutPalette, quantizeImage } from './quantize';
-import { makeImage } from './test-helpers';
+import { describe, expect, it } from "vitest";
+import {
+	ditherImage,
+	mapToNearest,
+	medianCutPalette,
+	quantizeImage,
+} from "./quantize";
+import { makeImage } from "./test-helpers";
 
-describe('medianCutPalette', () => {
-	it('два явных кластера при k=2 дают сами цвета', () => {
+describe("medianCutPalette", () => {
+	it("два явных кластера при k=2 дают сами цвета", () => {
 		const img = makeImage(4, 1, [
 			[0, 0, 0, 255],
 			[0, 0, 0, 255],
 			[255, 255, 255, 255],
-			[255, 255, 255, 255]
+			[255, 255, 255, 255],
 		]);
 		const palette = medianCutPalette(img, 2);
 		expect(palette).toHaveLength(2);
 		const hexes = palette.map((c) => `${c.r},${c.g},${c.b}`).sort();
-		expect(hexes).toEqual(['0,0,0', '255,255,255']);
+		expect(hexes).toEqual(["0,0,0", "255,255,255"]);
 	});
 
-	it('пустое изображение даёт чёрную заглушку', () => {
+	it("пустое изображение даёт чёрную заглушку", () => {
 		const empty = makeImage(2, 2, new Array(4).fill([0, 0, 0, 0]));
 		expect(medianCutPalette(empty, 4)).toHaveLength(1);
 	});
 });
 
-describe('quantizeImage / ditherImage', () => {
-	it('квантование укладывает пиксели в палитру, прозрачность сохраняется', () => {
+describe("quantizeImage / ditherImage", () => {
+	it("квантование укладывает пиксели в палитру, прозрачность сохраняется", () => {
 		const img = makeImage(3, 1, [
 			[10, 10, 10, 255],
 			[250, 250, 250, 255],
-			[0, 0, 0, 0]
+			[0, 0, 0, 0],
 		]);
 		const { image, palette } = quantizeImage(img, 2);
 		expect(palette.length).toBeLessThanOrEqual(2);
-		expect(image.data[(2) * 4 + 3]).toBe(0); // прозрачный остался
+		expect(image.data[2 * 4 + 3]).toBe(0); // прозрачный остался
 		for (let x = 0; x < 2; x++) {
 			const i = x * 4;
 			const matched = palette.some((hex) => {
@@ -42,9 +47,9 @@ describe('quantizeImage / ditherImage', () => {
 		}
 	});
 
-	it('floyd-steinberg расщепляет серый 50% на чёрное и белое', () => {
+	it("floyd-steinberg расщепляет серый 50% на чёрное и белое", () => {
 		const gray = makeImage(16, 16, new Array(256).fill([128, 128, 128, 255]));
-		const out = ditherImage(gray, 2, 'floyd-steinberg', ['#000000', '#ffffff']);
+		const out = ditherImage(gray, 2, "floyd-steinberg", ["#000000", "#ffffff"]);
 		let hasDark = false;
 		let hasLight = false;
 		for (let i = 0; i < out.data.length; i += 4) {
@@ -55,27 +60,27 @@ describe('quantizeImage / ditherImage', () => {
 		expect(hasLight).toBe(true);
 	});
 
-	it('bayer детерминирован', () => {
+	it("bayer детерминирован", () => {
 		const gray = makeImage(8, 8, new Array(64).fill([128, 128, 128, 255]));
-		const a = ditherImage(gray, 2, 'bayer');
-		const b = ditherImage(gray, 2, 'bayer');
+		const a = ditherImage(gray, 2, "bayer");
+		const b = ditherImage(gray, 2, "bayer");
 		expect([...a.data]).toEqual([...b.data]);
 	});
 
-	it('полностью прозрачное изображение не падает', () => {
+	it("полностью прозрачное изображение не падает", () => {
 		const empty = makeImage(2, 2, new Array(4).fill([0, 0, 0, 0]));
-		const out = ditherImage(empty, 4, 'bayer');
+		const out = ditherImage(empty, 4, "bayer");
 		expect(out.data[3]).toBe(0);
 	});
 });
 
-describe('mapToNearest', () => {
-	it('маппинг на ближайший из списка', () => {
+describe("mapToNearest", () => {
+	it("маппинг на ближайший из списка", () => {
 		const img = makeImage(2, 1, [
 			[10, 10, 10, 255],
-			[240, 240, 240, 255]
+			[240, 240, 240, 255],
 		]);
-		const out = mapToNearest(img, ['#000000', '#ffffff']);
+		const out = mapToNearest(img, ["#000000", "#ffffff"]);
 		expect(out.data[0]).toBe(0);
 		expect(out.data[4]).toBe(255);
 	});

web/src/lib/core/quantize.ts

@@ -1,7 +1,7 @@
-import type { PixelImage } from './types';
-import { createPixelImage } from './types';
-import { rgbToHex } from './palette';
-import { hexToRgb } from './palette';
+import type { PixelImage } from "./types";
+import { createPixelImage } from "./types";
+import { rgbToHex } from "./palette";
+import { hexToRgb } from "./palette";
 
 type Rgb = { r: number; g: number; b: number };
 
@@ -73,9 +73,9 @@ export function medianCutPalette(img: PixelImage, k: number): Rgb[] {
 
 		const bucket = buckets[targetIdx];
 		const ranges = [
-			{ ch: 'r' as const, range: bucket.max.r - bucket.min.r },
-			{ ch: 'g' as const, range: bucket.max.g - bucket.min.g },
-			{ ch: 'b' as const, range: bucket.max.b - bucket.min.b }
+			{ ch: "r" as const, range: bucket.max.r - bucket.min.r },
+			{ ch: "g" as const, range: bucket.max.g - bucket.min.g },
+			{ ch: "b" as const, range: bucket.max.b - bucket.min.b },
 		].sort((a, b) => b.range - a.range);
 		const widest = ranges[0].ch;
 		bucket.px.sort((a, b) => a[widest] - b[widest]);
@@ -84,7 +84,7 @@ export function medianCutPalette(img: PixelImage, k: number): Rgb[] {
 			...buckets.slice(0, targetIdx),
 			makeBucket(bucket.px.slice(0, mid)),
 			makeBucket(bucket.px.slice(mid)),
-			...buckets.slice(targetIdx + 1)
+			...buckets.slice(targetIdx + 1),
 		];
 	}
 
@@ -93,7 +93,7 @@ export function medianCutPalette(img: PixelImage, k: number): Rgb[] {
 		.map((b) => ({
 			r: Math.round(b.px.reduce((s, c) => s + c.r, 0) / b.px.length),
 			g: Math.round(b.px.reduce((s, c) => s + c.g, 0) / b.px.length),
-			b: Math.round(b.px.reduce((s, c) => s + c.b, 0) / b.px.length)
+			b: Math.round(b.px.reduce((s, c) => s + c.b, 0) / b.px.length),
 		}));
 }
 
@@ -109,7 +109,12 @@ export function quantizeImage(img: PixelImage, k: number): QuantizeResult {
 	for (let i = 0; i < img.data.length; i += 4) {
 		out.data[i + 3] = img.data[i + 3];
 		if (img.data[i + 3] === 0) continue;
-		const chosen = nearestIndex(palette, img.data[i], img.data[i + 1], img.data[i + 2]);
+		const chosen = nearestIndex(
+			palette,
+			img.data[i],
+			img.data[i + 1],
+			img.data[i + 2],
+		);
 		out.data[i] = palette[chosen].r;
 		out.data[i + 1] = palette[chosen].g;
 		out.data[i + 2] = palette[chosen].b;
@@ -118,13 +123,21 @@ export function quantizeImage(img: PixelImage, k: number): QuantizeResult {
 }
 
 /** Маппинг каждого пикселя на ближайший цвет пользовательского списка. */
-export function mapToNearest(img: PixelImage, paletteHexes: string[]): PixelImage {
+export function mapToNearest(
+	img: PixelImage,
+	paletteHexes: string[],
+): PixelImage {
 	const palette = paletteHexes.map(hexToRgb);
 	const out = createPixelImage(img.width, img.height);
 	for (let i = 0; i < img.data.length; i += 4) {
 		out.data[i + 3] = img.data[i + 3];
 		if (img.data[i + 3] === 0) continue;
-		const chosen = nearestIndex(palette, img.data[i], img.data[i + 1], img.data[i + 2]);
+		const chosen = nearestIndex(
+			palette,
+			img.data[i],
+			img.data[i + 1],
+			img.data[i + 2],
+		);
 		out.data[i] = palette[chosen].r;
 		out.data[i + 1] = palette[chosen].g;
 		out.data[i + 2] = palette[chosen].b;
@@ -136,10 +149,10 @@ const BAYER_4 = [
 	[0, 8, 2, 10],
 	[12, 4, 14, 6],
 	[3, 11, 1, 9],
-	[15, 7, 13, 5]
+	[15, 7, 13, 5],
 ];
 
-export type DitherPattern = 'floyd-steinberg' | 'bayer';
+export type DitherPattern = "floyd-steinberg" | "bayer";
 
 /**
  * Дизеринг к палитре из k цветов (median-cut) или к явно заданному списку hex.
@@ -149,7 +162,7 @@ export function ditherImage(
 	img: PixelImage,
 	k: number,
 	pattern: DitherPattern,
-	forcedPaletteHexes?: string[]
+	forcedPaletteHexes?: string[],
 ): PixelImage {
 	const palette = forcedPaletteHexes
 		? forcedPaletteHexes.map(hexToRgb)
@@ -177,7 +190,7 @@ export function ditherImage(
 			let g = buf[p * 3 + 1];
 			let b = buf[p * 3 + 2];
 
-			if (pattern === 'bayer') {
+			if (pattern === "bayer") {
 				const offset = ((BAYER_4[y % 4][x % 4] + 0.5) / 16 - 0.5) * spread;
 				r += offset;
 				g += offset;
@@ -189,7 +202,7 @@ export function ditherImage(
 			out.data[di + 1] = palette[chosen].g;
 			out.data[di + 2] = palette[chosen].b;
 
-			if (pattern !== 'floyd-steinberg') continue;
+			if (pattern !== "floyd-steinberg") continue;
 			const er = r - palette[chosen].r;
 			const eg = g - palette[chosen].g;
 			const eb = b - palette[chosen].b;

web/src/lib/core/shapes.test.ts

@@ -1,9 +1,9 @@
-import { describe, expect, it } from 'vitest';
-import { boxTest, circleTest, renderShape, starTest, wavyTest } from './shapes';
-import { makeImage } from './test-helpers';
+import { describe, expect, it } from "vitest";
+import { boxTest, circleTest, renderShape, starTest, wavyTest } from "./shapes";
+import { makeImage } from "./test-helpers";
 
-describe('тесты фигур', () => {
-	it('круг: центр внутри, угол снаружи', () => {
+describe("тесты фигур", () => {
+	it("круг: центр внутри, угол снаружи", () => {
 		const t = circleTest(0.5);
 		expect(t(0, 0)).toBe(true);
 		expect(t(0.49, 0)).toBe(true);
@@ -11,21 +11,23 @@ describe('тесты фигур', () => {
 		expect(t(0.4, 0.4)).toBe(false);
 	});
 
-	it('прямоугольник: полуоси независимы', () => {
+	it("прямоугольник: полуоси независимы", () => {
 		const t = boxTest(0.5, 0.25);
 		expect(t(0.45, 0.2)).toBe(true);
 		expect(t(0.2, 0.3)).toBe(false);
 	});
 
-	it('звезда: луч внутри дальше впадины', () => {
+	it("звезда: луч внутри дальше впадины", () => {
 		const t = starTest(5, 0.5, 1, 0);
 		expect(t(0.9, 0)).toBe(true); // вдоль луча (θ=0)
 		const valleyAngle = Math.PI / 5; // середина между лучами
-		expect(t(Math.cos(valleyAngle) * 0.8, Math.sin(valleyAngle) * 0.8)).toBe(false);
+		expect(t(Math.cos(valleyAngle) * 0.8, Math.sin(valleyAngle) * 0.8)).toBe(
+			false,
+		);
 		expect(t(0.4, 0)).toBe(true); // радиус впадин 0.5 — 0.4 внутри всегда
 	});
 
-	it('волна: фаза двигает границу', () => {
+	it("волна: фаза двигает границу", () => {
 		const a = wavyTest(0.5, 0.1, 6, 0);
 		const b = wavyTest(0.5, 0.1, 6, 180);
 		const deg = 15; // sin(6·15°)=1 → край 0.6; при фазе 180° край 0.4
@@ -36,19 +38,24 @@ describe('тесты фигур', () => {
 	});
 });
 
-describe('renderShape', () => {
+describe("renderShape", () => {
 	const img = makeImage(4, 2, new Array(8).fill([255, 255, 255, 255]));
 
-	it('внутри сохраняет пиксели, снаружи альфа 0', () => {
+	it("внутри сохраняет пиксели, снаружи альфа 0", () => {
 		const out = renderShape(img, boxTest(0.5, 0.5));
 		let opaque = 0;
-		for (let i = 3; i < out.data.length; i += 4) if (out.data[i] === 255) opaque++;
+		for (let i = 3; i < out.data.length; i += 4)
+			if (out.data[i] === 255) opaque++;
 		expect(opaque).toBe(4);
 		expect(out.data[4]).toBe(255); // RGB внутри фигуры сохранён
 	});
 
-	it('смещение центра переносит маску', () => {
-		const shifted = renderShape(makeImage(2, 2, new Array(4).fill([255, 255, 255, 255])), circleTest(0.7), 0.5);
+	it("смещение центра переносит маску", () => {
+		const shifted = renderShape(
+			makeImage(2, 2, new Array(4).fill([255, 255, 255, 255])),
+			circleTest(0.7),
+			0.5,
+		);
 		expect(shifted.data[3]).toBe(0);
 		expect(shifted.data[4 + 3]).toBe(255);
 	});

web/src/lib/core/shapes.ts

@@ -1,5 +1,5 @@
-import type { PixelImage } from './types';
-import { createPixelImage } from './types';
+import type { PixelImage } from "./types";
+import { createPixelImage } from "./types";
 
 export type ShapeTest = (nx: number, ny: number) => boolean;
 
@@ -21,7 +21,7 @@ export function starTest(
 	points: number,
 	innerFrac: number,
 	outerFrac: number,
-	rotationDeg: number
+	rotationDeg: number,
 ): ShapeTest {
 	const n = Math.max(3, Math.round(points));
 	const rot = (rotationDeg * Math.PI) / 180;
@@ -41,7 +41,7 @@ export function wavyTest(
 	baseFrac: number,
 	amplitudeFrac: number,
 	waves: number,
-	phaseDeg: number
+	phaseDeg: number,
 ): ShapeTest {
 	const phase = (phaseDeg * Math.PI) / 180;
 	return (nx, ny) => {
@@ -60,7 +60,7 @@ export function renderShape(
 	img: PixelImage,
 	test: ShapeTest,
 	offsetXFrac = 0,
-	offsetYFrac = 0
+	offsetYFrac = 0,
 ): PixelImage {
 	const out = createPixelImage(img.width, img.height);
 	const minDim = Math.min(img.width, img.height);

web/src/lib/core/test-helpers.ts

@@ -1,14 +1,23 @@
-import { expect } from 'vitest';
-import type { PixelImage } from './types';
+import { expect } from "vitest";
+import type { PixelImage } from "./types";
 
-export function makeImage(width: number, height: number, pixels: number[][]): PixelImage {
+export function makeImage(
+	width: number,
+	height: number,
+	pixels: number[][],
+): PixelImage {
 	const data = new Uint8ClampedArray(pixels.flat());
 	if (data.length !== width * height * 4) {
-		throw new Error(`Fixture mismatch: ${data.length} байт на ${width}x${height}`);
+		throw new Error(
+			`Fixture mismatch: ${data.length} байт на ${width}x${height}`,
+		);
 	}
 	return { width, height, data };
 }
 
-export function expectImageEqual(actual: PixelImage, expectedPixels: number[][]): void {
+export function expectImageEqual(
+	actual: PixelImage,
+	expectedPixels: number[][],
+): void {
 	expect([...actual.data]).toEqual(expectedPixels.flat());
 }

web/src/lib/core/text.test.ts

@@ -1,47 +1,45 @@
-import { describe, expect, it } from 'vitest';
-import { hexToPixels, pixelsToHex } from './text';
-import { makeImage } from './test-helpers';
+import { describe, expect, it } from "vitest";
+import { hexToPixels, pixelsToHex } from "./text";
+import { makeImage } from "./test-helpers";
 
-describe('pixelsToHex', () => {
-	it('форматирует пиксели как rrggbbaa построчно', () => {
+describe("pixelsToHex", () => {
+	it("форматирует пиксели как rrggbbaa построчно", () => {
 		const out = pixelsToHex(
 			makeImage(2, 2, [
 				[255, 0, 0, 255],
 				[0, 255, 0, 200],
 				[16, 32, 48, 64],
-				[0, 0, 0, 0]
-			])
+				[0, 0, 0, 0],
+			]),
 		);
-		expect(out).toBe('ff0000ff 00ff00c8\n10203040 00000000');
+		expect(out).toBe("ff0000ff 00ff00c8\n10203040 00000000");
 	});
 });
 
-describe('hexToPixels', () => {
-	it('обратим к pixelsToHex', () => {
+describe("hexToPixels", () => {
+	it("обратим к pixelsToHex", () => {
 		const source = makeImage(3, 1, [
 			[1, 2, 3, 4],
 			[250, 251, 252, 253],
-			[9, 9, 9, 128]
+			[9, 9, 9, 128],
 		]);
 		expect(hexToPixels(pixelsToHex(source), 3)).toEqual(source);
 	});
 
-	it('допускает произвольные переводы строк и регистр', () => {
-		const out = hexToPixels('FF0000FF\n\n00FF0080 00000080', 1);
+	it("допускает произвольные переводы строк и регистр", () => {
+		const out = hexToPixels("FF0000FF\n\n00FF0080 00000080", 1);
 		expect(out.width).toBe(1);
 		expect(out.height).toBe(3);
 		expect([...out.data]).toEqual([
-			255, 0, 0, 255,
-			0, 255, 0, 128,
-			0, 0, 0, 128
+			255, 0, 0, 255, 0, 255, 0, 128, 0, 0, 0, 128,
 		]);
 	});
 
 	it.each([
-		['ff0000', 'битые токены'],
-		['ff0000ff ff0000ff ff0000ff', 'не делится на ширину'],
-		['', 'пустой ввод']
-	])('бросает понятную ошибку: %s (%s)', (input) => {
+		["ff0000", "битые токены"],
+		["ff0000ff ff0000ff ff0000ff", "не делится на ширину"],
+		["", "пустой ввод"],
+	])("бросает понятную ошибку: %s (%s)", (input) => {
 		expect(() => hexToPixels(input, 2)).toThrow();
 	});
 });

web/src/lib/core/text.ts

@@ -1,5 +1,5 @@
-import type { PixelImage } from './types';
-import { ToolError } from './errors';
+import type { PixelImage } from "./types";
+import { ToolError } from "./errors";
 
 export function pixelsToHex(img: PixelImage): string {
 	const rows: string[] = [];
@@ -7,30 +7,38 @@ export function pixelsToHex(img: PixelImage): string {
 		const parts: string[] = [];
 		for (let x = 0; x < img.width; x++) {
 			const i = (y * img.width + x) * 4;
-			parts.push(byteHex(img.data[i]) + byteHex(img.data[i + 1]) + byteHex(img.data[i + 2]) + byteHex(img.data[i + 3]));
+			parts.push(
+				byteHex(img.data[i]) +
+					byteHex(img.data[i + 1]) +
+					byteHex(img.data[i + 2]) +
+					byteHex(img.data[i + 3]),
+			);
 		}
-		rows.push(parts.join(' '));
+		rows.push(parts.join(" "));
 	}
-	return rows.join('\n');
+	return rows.join("\n");
 }
 
 export function hexToPixels(text: string, width: number): PixelImage {
 	if (!Number.isInteger(width) || width < 1) {
-		throw new ToolError('errors.widthInt');
+		throw new ToolError("errors.widthInt");
 	}
-	const tokens = text.trim().split(/\s+/).filter((t) => t.length > 0);
+	const tokens = text
+		.trim()
+		.split(/\s+/)
+		.filter((t) => t.length > 0);
 	if (tokens.length === 0) {
-		throw new ToolError('errors.noHexPixels');
+		throw new ToolError("errors.noHexPixels");
 	}
 	if (tokens.some((t) => !/^[0-9a-fA-F]{8}$/.test(t))) {
-		throw new ToolError('errors.badPixelToken');
+		throw new ToolError("errors.badPixelToken");
 	}
 	const height = tokens.length / width;
 	if (!Number.isInteger(height)) {
-		throw new ToolError('errors.pixelCountMismatch', {
-				count: tokens.length,
-				width
-			});
+		throw new ToolError("errors.pixelCountMismatch", {
+			count: tokens.length,
+			width,
+		});
 	}
 	const data = new Uint8ClampedArray(tokens.length * 4);
 	tokens.forEach((token, index) => {
@@ -43,5 +51,5 @@ export function hexToPixels(text: string, width: number): PixelImage {
 }
 
 function byteHex(value: number): string {
-	return value.toString(16).padStart(2, '0');
+	return value.toString(16).padStart(2, "0");
 }

web/src/lib/core/textdraw.test.ts

@@ -1,49 +1,67 @@
-import { describe, expect, it } from 'vitest';
-import { anchorOrigin, tileGrid, wrapText } from './textdraw';
+import { describe, expect, it } from "vitest";
+import { anchorOrigin, tileGrid, wrapText } from "./textdraw";
 
 const measure = (s: string) => s.length * 10;
 
-describe('anchorOrigin', () => {
-	it('углы и отступ считаются от краёв', () => {
-		expect(anchorOrigin('top-left', 100, 50, 400, 300, 30)).toEqual({ x: 30, y: 30 });
-		expect(anchorOrigin('top-right', 100, 50, 400, 300, 30)).toEqual({ x: 270, y: 30 });
-		expect(anchorOrigin('bottom-left', 100, 50, 400, 300, 30)).toEqual({ x: 30, y: 220 });
-		expect(anchorOrigin('bottom-right', 100, 50, 400, 300, 30)).toEqual({ x: 270, y: 220 });
+describe("anchorOrigin", () => {
+	it("углы и отступ считаются от краёв", () => {
+		expect(anchorOrigin("top-left", 100, 50, 400, 300, 30)).toEqual({
+			x: 30,
+			y: 30,
+		});
+		expect(anchorOrigin("top-right", 100, 50, 400, 300, 30)).toEqual({
+			x: 270,
+			y: 30,
+		});
+		expect(anchorOrigin("bottom-left", 100, 50, 400, 300, 30)).toEqual({
+			x: 30,
+			y: 220,
+		});
+		expect(anchorOrigin("bottom-right", 100, 50, 400, 300, 30)).toEqual({
+			x: 270,
+			y: 220,
+		});
 	});
 
-	it('центрирование — ровно половина остатка', () => {
-		expect(anchorOrigin('center', 100, 50, 401, 301, 0)).toEqual({ x: 150.5, y: 125.5 });
-		expect(anchorOrigin('middle-left', 100, 50, 400, 300, 12)).toEqual({ x: 12, y: 125 });
-		expect(anchorOrigin('top-center', 100, 50, 400, 300, 8)).toEqual({ x: 150, y: 8 });
+	it("центрирование — ровно половина остатка", () => {
+		expect(anchorOrigin("center", 100, 50, 401, 301, 0)).toEqual({
+			x: 150.5,
+			y: 125.5,
+		});
+		expect(anchorOrigin("middle-left", 100, 50, 400, 300, 12)).toEqual({
+			x: 12,
+			y: 125,
+		});
+		expect(anchorOrigin("top-center", 100, 50, 400, 300, 8)).toEqual({
+			x: 150,
+			y: 8,
+		});
 	});
 });
 
-describe('wrapText', () => {
-	it('жадно набирает строки в пределах ширины', () => {
+describe("wrapText", () => {
+	it("жадно набирает строки в пределах ширины", () => {
 		// measure: 10px за символ → строка ≤ 120px = 12 символов
-		expect(wrapText('один два три четыре пять', 120, measure)).toEqual([
-			'один два три',
-			'четыре пять'
+		expect(wrapText("один два три четыре пять", 120, measure)).toEqual([
+			"один два три",
+			"четыре пять",
 		]);
 	});
 
-	it('слово длиннее ширины уходит на отдельную строку целиком', () => {
-		expect(wrapText('короткое сверхдлинноеслово без переносов', 90, measure)).toEqual([
-			'короткое',
-			'сверхдлинноеслово',
-			'без',
-			'переносов'
-		]);
+	it("слово длиннее ширины уходит на отдельную строку целиком", () => {
+		expect(
+			wrapText("короткое сверхдлинноеслово без переносов", 90, measure),
+		).toEqual(["короткое", "сверхдлинноеслово", "без", "переносов"]);
 	});
 
-	it('пустой и пробельный текст дают пустой массив', () => {
-		expect(wrapText('', 100, measure)).toEqual([]);
-		expect(wrapText('   \n\t ', 100, measure)).toEqual([]);
+	it("пустой и пробельный текст дают пустой массив", () => {
+		expect(wrapText("", 100, measure)).toEqual([]);
+		expect(wrapText("   \n\t ", 100, measure)).toEqual([]);
 	});
 });
 
-describe('tileGrid', () => {
-	it('стабильная сетка с шагом и центрированием', () => {
+describe("tileGrid", () => {
+	it("стабильная сетка с шагом и центрированием", () => {
 		const pts = tileGrid(200, 200, 0, 60, 60, 80, 24);
 		expect(pts.length).toBeGreaterThan(0);
 		const xs = new Set(pts.map((p) => p.x));
@@ -52,13 +70,13 @@ describe('tileGrid', () => {
 		expect(ys.size).toBeGreaterThan(1);
 	});
 
-	it('кап защищает от гигантского количества плиток', () => {
+	it("кап защищает от гигантского количества плиток", () => {
 		const pts = tileGrid(4000, 4000, 45, 8, 8, 100, 40);
 		expect(pts.length).toBeLessThanOrEqual(2500);
 		expect(pts.length).toBeGreaterThan(0);
 	});
 
-	it('обычные входные данные не триггерят кап', () => {
+	it("обычные входные данные не триггерят кап", () => {
 		const pts = tileGrid(800, 600, 30, 140, 90, 160, 40);
 		expect(pts.length).toBeLessThanOrEqual(2500);
 		expect(pts.length).toBeGreaterThan(4);

web/src/lib/core/textdraw.ts

@@ -1,13 +1,13 @@
 export type Position9 =
-	| 'top-left'
-	| 'top-center'
-	| 'top-right'
-	| 'middle-left'
-	| 'center'
-	| 'middle-right'
-	| 'bottom-left'
-	| 'bottom-center'
-	| 'bottom-right';
+	| "top-left"
+	| "top-center"
+	| "top-right"
+	| "middle-left"
+	| "center"
+	| "middle-right"
+	| "bottom-left"
+	| "bottom-center"
+	| "bottom-right";
 
 /**
  * Левый верхний угол контента размером contentW×contentH при размещении
@@ -19,16 +19,30 @@ export function anchorOrigin(
 	contentH: number,
 	cw: number,
 	ch: number,
-	margin: number
+	margin: number,
 ): { x: number; y: number } {
-	const h = position.endsWith('-left') ? 'left' : position.endsWith('-right') ? 'right' : 'center';
-	const v = position.startsWith('top-')
-		? 'top'
-		: position.startsWith('bottom-')
-			? 'bottom'
-			: 'middle';
-	const x = h === 'left' ? margin : h === 'right' ? cw - margin - contentW : (cw - contentW) / 2;
-	const y = v === 'top' ? margin : v === 'bottom' ? ch - margin - contentH : (ch - contentH) / 2;
+	const h = position.endsWith("-left")
+		? "left"
+		: position.endsWith("-right")
+			? "right"
+			: "center";
+	const v = position.startsWith("top-")
+		? "top"
+		: position.startsWith("bottom-")
+			? "bottom"
+			: "middle";
+	const x =
+		h === "left"
+			? margin
+			: h === "right"
+				? cw - margin - contentW
+				: (cw - contentW) / 2;
+	const y =
+		v === "top"
+			? margin
+			: v === "bottom"
+				? ch - margin - contentH
+				: (ch - contentH) / 2;
 	return { x, y };
 }
 
@@ -39,12 +53,15 @@ export function anchorOrigin(
 export function wrapText(
 	text: string,
 	maxWidth: number,
-	measure: (line: string) => number
+	measure: (line: string) => number,
 ): string[] {
-	const words = text.trim().split(/\s+/).filter((w) => w.length > 0);
+	const words = text
+		.trim()
+		.split(/\s+/)
+		.filter((w) => w.length > 0);
 	if (words.length === 0) return [];
 	const lines: string[] = [];
-	let current = '';
+	let current = "";
 	for (const word of words) {
 		const candidate = current.length === 0 ? word : `${current} ${word}`;
 		if (measure(candidate) <= maxWidth || current.length === 0) {
@@ -75,7 +92,7 @@ export function tileGrid(
 	stepX: number,
 	stepY: number,
 	blockW: number,
-	blockH: number
+	blockH: number,
 ): TilePoint[] {
 	const diag = Math.sqrt(cw * cw + ch * ch);
 	const spanX = diag + blockW;
@@ -101,7 +118,7 @@ export function tileGrid(
 		for (let c = 0; c < cols; c++) {
 			points.push({
 				x: startX + c * sx - cw / 2,
-				y: startY + r * sy - ch / 2
+				y: startY + r * sy - ch / 2,
 			});
 		}
 	}

web/src/lib/core/textio.test.ts

@@ -1,4 +1,4 @@
-import { describe, expect, it } from 'vitest';
+import { describe, expect, it } from "vitest";
 import {
 	base64ToBytes,
 	bytesToImage,
@@ -6,58 +6,60 @@ import {
 	imageToRgbValues,
 	looksLikePng,
 	rgbValuesToImage,
-	stripDataUri
-} from './textio';
-import { makeImage } from './test-helpers';
+	stripDataUri,
+} from "./textio";
+import { makeImage } from "./test-helpers";
 
 const img = makeImage(2, 1, [
 	[255, 0, 0, 255],
-	[0, 255, 0, 128]
+	[0, 255, 0, 128],
 ]);
 
-describe('bytes', () => {
-	it('round-trip rows → image → rows', () => {
+describe("bytes", () => {
+	it("round-trip rows → image → rows", () => {
 		const rows = imageToByteRows(img);
-		expect(rows).toBe('255 0 0 255  0 255 0 128');
+		expect(rows).toBe("255 0 0 255  0 255 0 128");
 		const back = bytesToImage(rows, 2);
 		expect([...back.data]).toEqual([...img.data]);
 	});
 
-	it('некратное четырём число байт — ошибка', () => {
-		expect(() => bytesToImage('1 2 3', 1)).toThrow(/errors\.bytesCount/);
+	it("некратное четырём число байт — ошибка", () => {
+		expect(() => bytesToImage("1 2 3", 1)).toThrow(/errors\.bytesCount/);
 	});
 
-	it('значение вне 0..255 — ошибка диапазона', () => {
-		expect(() => bytesToImage('10 20 30 256', 1)).toThrow(/errors\.byteRange/);
+	it("значение вне 0..255 — ошибка диапазона", () => {
+		expect(() => bytesToImage("10 20 30 256", 1)).toThrow(/errors\.byteRange/);
 	});
 });
 
-describe('rgb values', () => {
-	it('round-trip rgba-строк', () => {
+describe("rgb values", () => {
+	it("round-trip rgba-строк", () => {
 		const rows = imageToRgbValues(img);
-		expect(rows.split('\n')[0]).toBe('rgba(255, 0, 0, 255)  rgba(0, 255, 0, 128)');
-		const back = rgbValuesToImage(rows.replace(/rgba\(|\)/g, ''), 2);
+		expect(rows.split("\n")[0]).toBe(
+			"rgba(255, 0, 0, 255)  rgba(0, 255, 0, 128)",
+		);
+		const back = rgbValuesToImage(rows.replace(/rgba\(|\)/g, ""), 2);
 		expect([...back.data]).toEqual([...img.data]);
 	});
 });
 
-describe('png signature / data-uri', () => {
-	it('looksLikePng: настоящая сигнатура и обрывок', () => {
+describe("png signature / data-uri", () => {
+	it("looksLikePng: настоящая сигнатура и обрывок", () => {
 		const good = new Uint8Array([137, 80, 78, 71, 13, 10, 26, 10, 1]);
 		const bad = new Uint8Array([137, 80, 78]);
 		expect(looksLikePng(good)).toBe(true);
 		expect(looksLikePng(bad)).toBe(false);
 	});
 
-	it('stripDataUri снимает префикс и оставляет чистый base64', () => {
-		expect(stripDataUri('data:image/png;base64,iVBORw==')).toBe('iVBORw==');
-		expect(stripDataUri('  iVBORw==')).toBe('iVBORw==');
+	it("stripDataUri снимает префикс и оставляет чистый base64", () => {
+		expect(stripDataUri("data:image/png;base64,iVBORw==")).toBe("iVBORw==");
+		expect(stripDataUri("  iVBORw==")).toBe("iVBORw==");
 	});
 });
 
-describe('base64ToBytes', () => {
-	it('декодирует известную строку', () => {
-		const bytes = base64ToBytes('AAECAwQ=');
+describe("base64ToBytes", () => {
+	it("декодирует известную строку", () => {
+		const bytes = base64ToBytes("AAECAwQ=");
 		expect([...bytes]).toEqual([0, 1, 2, 3, 4]);
 	});
 });

web/src/lib/core/textio.ts

@@ -1,6 +1,6 @@
-import { ToolError } from './errors';
-import type { PixelImage } from './types';
-import { createPixelImage } from './types';
+import { ToolError } from "./errors";
+import type { PixelImage } from "./types";
+import { createPixelImage } from "./types";
 
 const PNG_SIGNATURE = [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a];
 
@@ -11,25 +11,30 @@ export function imageToByteRows(img: PixelImage): string {
 		const parts: string[] = [];
 		for (let x = 0; x < img.width; x++) {
 			const i = (y * img.width + x) * 4;
-			parts.push(`${img.data[i]} ${img.data[i + 1]} ${img.data[i + 2]} ${img.data[i + 3]}`);
+			parts.push(
+				`${img.data[i]} ${img.data[i + 1]} ${img.data[i + 2]} ${img.data[i + 3]}`,
+			);
 		}
-		rows.push(parts.join('  '));
+		rows.push(parts.join("  "));
 	}
-	return rows.join('\n');
+	return rows.join("\n");
 }
 
 export function bytesToImage(text: string, width: number): PixelImage {
 	const nums = (text.match(/-?\d+/g) ?? []).map(Number);
 	if (nums.length % 4 !== 0) {
-		throw new ToolError('errors.bytesCount', { count: nums.length });
+		throw new ToolError("errors.bytesCount", { count: nums.length });
 	}
 	if (nums.some((n) => !Number.isInteger(n) || n < 0 || n > 255)) {
-		throw new ToolError('errors.byteRange');
+		throw new ToolError("errors.byteRange");
 	}
 	const w = Math.trunc(width);
-	if (!Number.isInteger(w) || w < 1) throw new ToolError('errors.widthInt');
-	if (nums.length / 4 % w !== 0) {
-		throw new ToolError('errors.pixelCountMismatch', { count: nums.length / 4, width: w });
+	if (!Number.isInteger(w) || w < 1) throw new ToolError("errors.widthInt");
+	if ((nums.length / 4) % w !== 0) {
+		throw new ToolError("errors.pixelCountMismatch", {
+			count: nums.length / 4,
+			width: w,
+		});
 	}
 	const out = createPixelImage(w, nums.length / 4 / w);
 	out.data.set(nums);
@@ -43,26 +48,31 @@ export function imageToRgbValues(img: PixelImage): string {
 		const parts: string[] = [];
 		for (let x = 0; x < img.width; x++) {
 			const i = (y * img.width + x) * 4;
-			parts.push(`rgba(${img.data[i]}, ${img.data[i + 1]}, ${img.data[i + 2]}, ${img.data[i + 3]})`);
+			parts.push(
+				`rgba(${img.data[i]}, ${img.data[i + 1]}, ${img.data[i + 2]}, ${img.data[i + 3]})`,
+			);
 		}
-		rows.push(parts.join('  '));
+		rows.push(parts.join("  "));
 	}
-	return rows.join('\n');
+	return rows.join("\n");
 }
 
 export function rgbValuesToImage(text: string, width: number): PixelImage {
 	const nums = (text.match(/-?\d+(?:\.\d+)?/g) ?? []).map(Number);
 	if (nums.length % 4 !== 0) {
-		throw new ToolError('errors.bytesCount', { count: nums.length });
+		throw new ToolError("errors.bytesCount", { count: nums.length });
 	}
 	if (nums.some((n) => !Number.isInteger(n) || n < 0 || n > 255)) {
-		throw new ToolError('errors.byteRange');
+		throw new ToolError("errors.byteRange");
 	}
 	const w = Math.trunc(width);
-	if (!Number.isInteger(w) || w < 1) throw new ToolError('errors.widthInt');
+	if (!Number.isInteger(w) || w < 1) throw new ToolError("errors.widthInt");
 	const pxCount = nums.length / 4;
 	if (pxCount % w !== 0) {
-		throw new ToolError('errors.pixelCountMismatch', { count: pxCount, width: w });
+		throw new ToolError("errors.pixelCountMismatch", {
+			count: pxCount,
+			width: w,
+		});
 	}
 	const out = createPixelImage(w, pxCount / w);
 	out.data.set(nums);
@@ -76,7 +86,7 @@ export function stripDataUri(text: string): string {
 }
 
 export function base64ToBytes(text: string): Uint8Array {
-	const clean = text.replace(/\s+/g, '');
+	const clean = text.replace(/\s+/g, "");
 	const binary = atob(clean);
 	const bytes = new Uint8Array(binary.length);
 	for (let i = 0; i < binary.length; i++) bytes[i] = binary.charCodeAt(i);

web/src/lib/core/types.ts

@@ -8,7 +8,7 @@ export function createPixelImage(width: number, height: number): PixelImage {
 	return {
 		width,
 		height,
-		data: new Uint8ClampedArray(width * height * 4)
+		data: new Uint8ClampedArray(width * height * 4),
 	};
 }
 

web/src/lib/i18n/dict.ts

@@ -1,17 +1,19 @@
-import type { CategoryId } from '../categories';
+import type { CategoryId } from "../categories";
 
-export const LOCALES = ['ru', 'en'] as const;
+export const LOCALES = ["ru", "en"] as const;
 export type Locale = (typeof LOCALES)[number];
 
-export const BASE_LOCALE: Locale = 'en';
+export const BASE_LOCALE: Locale = "en";
 
 export const LOCALE_TAGS: Record<Locale, string> = {
-	ru: 'ru-RU',
-	en: 'en-US'
+	ru: "ru-RU",
+	en: "en-US",
 };
 
 export function isLocale(value: unknown): value is Locale {
-	return typeof value === 'string' && (LOCALES as readonly string[]).includes(value);
+	return (
+		typeof value === "string" && (LOCALES as readonly string[]).includes(value)
+	);
 }
 
 export type ToolStrings = {

web/src/lib/i18n/en.ts

@@ -1,182 +1,185 @@
-import type { Dict } from './dict';
+import type { Dict } from "./dict";
 
 export const en: Dict = {
 	header: {
-		workspace: 'Workspace',
-		catalog: 'Catalog',
-		sectionsAria: 'Sections',
+		workspace: "Workspace",
+		catalog: "Catalog",
+		sectionsAria: "Sections",
 		footerNote:
-			'All operations run locally in your browser — your files are never uploaded anywhere.'
+			"All operations run locally in your browser — your files are never uploaded anywhere.",
 	},
 	categories: {
-		convert: 'Convert',
-		alpha: 'Transparency',
-		color: 'Color',
-		geometry: 'Geometry',
-		filters: 'Filters',
-		text: 'Text',
-		analyze: 'Analyze',
-		generate: 'Generate'
+		convert: "Convert",
+		alpha: "Transparency",
+		color: "Color",
+		geometry: "Geometry",
+		filters: "Filters",
+		text: "Text",
+		analyze: "Analyze",
+		generate: "Generate",
 	},
 	home: {
-		defaultTitle: 'easy-png-tools — PNG utilities right in your browser',
-		heroTitle: 'What do you want to do with the image?',
-		heroLead: 'Find a tool — everything runs locally in your browser.',
-		restoreLast: '↩ Restore last: {title}',
-		changeTool: '← Change tool'
+		defaultTitle: "easy-png-tools — PNG utilities right in your browser",
+		heroTitle: "What do you want to do with the image?",
+		heroLead: "Find a tool — everything runs locally in your browser.",
+		restoreLast: "↩ Restore last: {title}",
+		changeTool: "← Change tool",
 	},
 	catalog: {
-		pageTitle: 'All tools — easy-png-tools',
+		pageTitle: "All tools — easy-png-tools",
 		metaDescription:
-			'Full catalog of PNG utilities: convert, transparency, color, geometry, analysis and image generation.',
-		heading: 'Tool catalog',
-		lead: '{count} utilities for working with PNG. Everything runs locally in your browser.'
+			"Full catalog of PNG utilities: convert, transparency, color, geometry, analysis and image generation.",
+		heading: "Tool catalog",
+		lead: "{count} utilities for working with PNG. Everything runs locally in your browser.",
 	},
 	toolPage: {
-		fallbackTitle: 'Tool',
-		legendSource: 'Source',
-		legendSummary: 'Summary',
-		legendResult: 'Result',
-		legendParams: 'Parameters',
-		stepHeading: 'Step {n}',
-		removeStepAria: 'Remove step',
-		stepError: 'Step {n} ({title}): {msg}'
+		fallbackTitle: "Tool",
+		legendSource: "Source",
+		legendSummary: "Summary",
+		legendResult: "Result",
+		legendParams: "Parameters",
+		stepHeading: "Step {n}",
+		removeStepAria: "Remove step",
+		stepError: "Step {n} ({title}): {msg}",
 	},
 	chain: {
-		stepLabel: 'Step {n}: {title}',
-		inputLegend: 'Input',
-		resultLegend: 'Result',
-		paramsLegend: 'Parameters',
-		busyTitle: 'Processing…',
-		busyHint: 'Running chain step',
-		removeStepAria: 'Remove step'
+		stepLabel: "Step {n}: {title}",
+		inputLegend: "Input",
+		resultLegend: "Result",
+		paramsLegend: "Parameters",
+		busyTitle: "Processing…",
+		busyHint: "Running chain step",
+		removeStepAria: "Remove step",
 	},
 	sourceCard: {
-		replaceImage: 'Replace image'
+		replaceImage: "Replace image",
 	},
 	resultCard: {
-		emptyTitle: 'The result will appear here',
-		emptyHint: 'First upload a source image on the left',
-		processingTitle: 'Processing…',
-		processingHint: 'The image is being processed, this will take a moment',
-		recalc: 'Recalculating…',
-		nextTool: '⛓ Next tool',
-		breakChain: '✂ Break the chain'
+		emptyTitle: "The result will appear here",
+		emptyHint: "First upload a source image on the left",
+		processingTitle: "Processing…",
+		processingHint: "The image is being processed, this will take a moment",
+		recalc: "Recalculating…",
+		nextTool: "⛓ Next tool",
+		breakChain: "✂ Break the chain",
 	},
 	paramsCard: {
-		noParams: 'This tool has no parameters — the result is ready as is.'
+		noParams: "This tool has no parameters — the result is ready as is.",
 	},
 	textInput: {
-		heading: 'Text',
-		placeholder: 'Paste data here',
-		aria: 'Text data',
-		decode: 'Decode'
+		heading: "Text",
+		placeholder: "Paste data here",
+		aria: "Text data",
+		decode: "Decode",
 	},
 	textResult: {
-		outputAria: 'Text result',
-		copied: 'Copied',
-		copy: 'Copy',
-		downloadTxt: 'Download .txt'
+		outputAria: "Text result",
+		copied: "Copied",
+		copy: "Copy",
+		downloadTxt: "Download .txt",
 	},
 	download: {
-		busy: 'Preparing file…',
-		file: 'Download .{ext}'
+		busy: "Preparing file…",
+		file: "Download .{ext}",
 	},
 	infoPanel: {
-		dimensions: 'Dimensions',
-		alpha: 'Alpha channel',
-		alphaYes: 'yes — there are semi-transparent pixels',
-		alphaNo: 'no',
-		colorCount: 'Unique colors (RGBA)'
+		dimensions: "Dimensions",
+		alpha: "Alpha channel",
+		alphaYes: "yes — there are semi-transparent pixels",
+		alphaNo: "no",
+		colorCount: "Unique colors (RGBA)",
 	},
 	dropZone: {
-		pickDefault: 'Drop an image here or click to choose a file',
-		overlayDefault: 'Release the file to replace the image'
+		pickDefault: "Drop an image here or click to choose a file",
+		overlayDefault: "Release the file to replace the image",
 	},
 	search: {
-		placeholder: 'Find a tool…',
-		aria: 'Search tools',
-		nothingFound: 'Nothing found — try another word.'
+		placeholder: "Find a tool…",
+		aria: "Search tools",
+		nothingFound: "Nothing found — try another word.",
 	},
 	ui: {
-		showMask: 'Show mask',
-		decrease: 'Decrease',
-		increase: 'Increase',
-		reset: 'Reset',
-		pipette: 'Eyedropper',
-		themeLight: 'Light theme',
-		themeDark: 'Dark theme',
-		overlayTitle: 'Watermark',
-		overlayDrop: 'Drop a watermark PNG or click',
-		overlayRemove: 'Remove watermark'
+		showMask: "Show mask",
+		decrease: "Decrease",
+		increase: "Increase",
+		reset: "Reset",
+		pipette: "Eyedropper",
+		themeLight: "Light theme",
+		themeDark: "Dark theme",
+		overlayTitle: "Watermark",
+		overlayDrop: "Drop a watermark PNG or click",
+		overlayRemove: "Remove watermark",
 	},
 	errors: {
-		noImageRun: 'This tool does not process images',
-		workerFailed: 'Worker execution failed',
-		workerUnavailable: 'Worker is unavailable',
-		notFound: 'Tool not found',
-		noWatermark: 'Pick a watermark image first',
-		badTransform: 'Degenerate transformation matrix',
-		skewAngle: 'Skew angles cannot be 90° or -90°',
+		noImageRun: "This tool does not process images",
+		workerFailed: "Worker execution failed",
+		workerUnavailable: "Worker is unavailable",
+		notFound: "Tool not found",
+		noWatermark: "Pick a watermark image first",
+		badTransform: "Degenerate transformation matrix",
+		skewAngle: "Skew angles cannot be 90° or -90°",
 		badHex: 'Invalid HEX color: "{value}"',
-		radiusInt: 'Radius must be a non-negative integer',
-		kernelSize: 'Kernel does not match the image dimensions',
-		sizeInt: 'Width and height must be integers ≥ 1',
-		cropBounds: 'Crop area does not intersect the image',
-		noCanvasCtx: 'Canvas 2D context is unavailable in this environment',
-		badBase64: 'Expected a base64 string or a data-uri of an image',
-		qualityRange: 'quality must be within 0..1',
-		svgSize: 'Could not determine SVG dimensions',
-		svgLoad: 'Failed to load SVG — check the markup',
-		encodeUnsupported: 'The browser does not support encoding to {mime}',
+		radiusInt: "Radius must be a non-negative integer",
+		kernelSize: "Kernel does not match the image dimensions",
+		sizeInt: "Width and height must be integers ≥ 1",
+		cropBounds: "Crop area does not intersect the image",
+		noCanvasCtx: "Canvas 2D context is unavailable in this environment",
+		badBase64: "Expected a base64 string or a data-uri of an image",
+		qualityRange: "quality must be within 0..1",
+		svgSize: "Could not determine SVG dimensions",
+		svgLoad: "Failed to load SVG — check the markup",
+		encodeUnsupported: "The browser does not support encoding to {mime}",
 		unsupportedFile:
-			'Unsupported file format ({type}). Supported formats are PNG, JPEG, WebP, GIF and BMP.',
-		widthInt: 'Image width must be an integer ≥ 1',
-		noHexPixels: 'No hex pixel values found',
-		badPixelToken: 'Each pixel must be 8 hex characters RRGGBBAA, separated by spaces',
-		pixelCountMismatch: 'Pixel count ({count}) is not divisible by width {width} without a remainder',
+			"Unsupported file format ({type}). Supported formats are PNG, JPEG, WebP, GIF and BMP.",
+		widthInt: "Image width must be an integer ≥ 1",
+		noHexPixels: "No hex pixel values found",
+		badPixelToken:
+			"Each pixel must be 8 hex characters RRGGBBAA, separated by spaces",
+		pixelCountMismatch:
+			"Pixel count ({count}) is not divisible by width {width} without a remainder",
 		toolNotFound: 'Tool "{id}" not found',
-		badJson: 'The file is not valid JSON',
-		badPipelineShape: 'The file structure does not look like a chain of steps',
-		pipelineVersion: 'Unsupported chain version: {version}',
-		noSteps: 'The file has no list of steps',
+		badJson: "The file is not valid JSON",
+		badPipelineShape: "The file structure does not look like a chain of steps",
+		pipelineVersion: "Unsupported chain version: {version}",
+		noSteps: "The file has no list of steps",
 		paramNumber: 'Parameter "{id}" must be a number',
 		paramString: 'Parameter "{id}" must be a string',
 		paramBool: 'Parameter "{id}" must be a checkbox value',
-		resizeSize: 'Width and/or height must be positive',
-		cropSize: 'Crop width and height must be positive',
-		sizePositive: 'Dimensions must be positive and finite'
+		resizeSize: "Width and/or height must be positive",
+		cropSize: "Crop width and height must be positive",
+		sizePositive: "Dimensions must be positive and finite",
 	},
 	tools: {
-		'png-file-size': {
+		"png-file-size": {
 			results: {
-				line: 'PNG size: {kb} KB'
-			}
+				line: "PNG size: {kb} KB",
+			},
 		},
-		'verify-is-png': {
+		"verify-is-png": {
 			results: {
-				verifyYes: 'Yes — this is a valid PNG signature.',
-				verifyNo: 'No — the signature does not match a PNG file.'
-			}
+				verifyYes: "Yes — this is a valid PNG signature.",
+				verifyNo: "No — the signature does not match a PNG file.",
+			},
 		},
-		'png-is-grayscale': {
+		"png-is-grayscale": {
 			results: {
-				grayscaleYes: 'Yes — all pixels are shades of gray.',
-				grayscaleNo: 'No — colored pixels were found.'
-			}
+				grayscaleYes: "Yes — all pixels are shades of gray.",
+				grayscaleNo: "No — colored pixels were found.",
+			},
 		},
-		'png-is-transparent': {
+		"png-is-transparent": {
 			results: {
-				transparentYes: 'Yes — there are transparent or semi-transparent pixels.',
-				transparentNo: 'No — all pixels are fully opaque.'
-			}
+				transparentYes:
+					"Yes — there are transparent or semi-transparent pixels.",
+				transparentNo: "No — all pixels are fully opaque.",
+			},
 		},
-		'png-orientation': {
+		"png-orientation": {
 			results: {
-				orientationPortrait: 'Portrait — height is greater than width.',
-				orientationLandscape: 'Landscape — width is greater than height.',
-				orientationSquare: 'Square — the sides are equal.'
-			}
-		}
-	}
+				orientationPortrait: "Portrait — height is greater than width.",
+				orientationLandscape: "Landscape — width is greater than height.",
+				orientationSquare: "Square — the sides are equal.",
+			},
+		},
+	},
 };

web/src/lib/i18n/i18n.test.ts

@@ -1,80 +1,82 @@
-import { beforeEach, describe, expect, it, vi } from 'vitest';
-import { getLocale, initLocale, setLocale } from './locale.svelte';
-import { interpolate, t } from './t';
-import { en } from './en';
+import { beforeEach, describe, expect, it, vi } from "vitest";
+import { getLocale, initLocale, setLocale } from "./locale.svelte";
+import { interpolate, t } from "./t";
+import { en } from "./en";
 
 type Store = Record<string, string>;
 
 function stubStorage(): { store: Store } {
 	const store: Store = {};
-	vi.stubGlobal('localStorage', {
+	vi.stubGlobal("localStorage", {
 		getItem: (k: string) => (k in store ? store[k] : null),
 		setItem: (k: string, v: string) => {
 			store[k] = v;
-		}
+		},
 	});
-	vi.stubGlobal('window', {});
+	vi.stubGlobal("window", {});
 	return { store };
 }
 
 beforeEach(() => {
-	setLocale('ru');
+	setLocale("ru");
 	delete (en.home as Record<string, string>).onlyEnKey;
 	vi.unstubAllGlobals();
 });
 
-describe('t', () => {
-	it('возвращает строку по точечному пути активной локали', () => {
-		expect(t('header.workspace')).toBe('Рабочая область');
-		setLocale('en');
-		expect(t('header.catalog')).toBe('Catalog');
+describe("t", () => {
+	it("возвращает строку по точечному пути активной локали", () => {
+		expect(t("header.workspace")).toBe("Рабочая область");
+		setLocale("en");
+		expect(t("header.catalog")).toBe("Catalog");
 	});
 
-	it('фолбэк на английскую базу, если в активной локали нет ключа', () => {
-		(en.home as Record<string, string>).onlyEnKey = 'Only English string';
-		setLocale('ru');
-		expect(t('home.onlyEnKey')).toBe('Only English string');
+	it("фолбэк на английскую базу, если в активной локали нет ключа", () => {
+		(en.home as Record<string, string>).onlyEnKey = "Only English string";
+		setLocale("ru");
+		expect(t("home.onlyEnKey")).toBe("Only English string");
 	});
 
-	it('неизвестный путь возвращает сам путь', () => {
-		expect(t('no.such.key')).toBe('no.such.key');
+	it("неизвестный путь возвращает сам путь", () => {
+		expect(t("no.such.key")).toBe("no.such.key");
 	});
 });
 
-describe('interpolate', () => {
-	it('подставляет переменные в шаблон', () => {
-		expect(interpolate('Шаг {n} из {total}', { n: 2, total: 5 })).toBe('Шаг 2 из 5');
+describe("interpolate", () => {
+	it("подставляет переменные в шаблон", () => {
+		expect(interpolate("Шаг {n} из {total}", { n: 2, total: 5 })).toBe(
+			"Шаг 2 из 5",
+		);
 	});
 
-	it('оставляет плейсхолдер без переменной как есть', () => {
-		expect(interpolate('Привет, {name}!', {})).toBe('Привет, {name}!');
+	it("оставляет плейсхолдер без переменной как есть", () => {
+		expect(interpolate("Привет, {name}!", {})).toBe("Привет, {name}!");
 	});
 
-	it('без переменных возвращает строку без изменений', () => {
-		expect(interpolate('Просто текст')).toBe('Просто текст');
+	it("без переменных возвращает строку без изменений", () => {
+		expect(interpolate("Просто текст")).toBe("Просто текст");
 	});
 });
 
-describe('персист локали', () => {
-	it('initLocale читает сохранённый выбор', () => {
+describe("персист локали", () => {
+	it("initLocale читает сохранённый выбор", () => {
 		const { store } = stubStorage();
-		store['locale'] = 'en';
+		store["locale"] = "en";
 		initLocale();
-		expect(getLocale()).toBe('en');
+		expect(getLocale()).toBe("en");
 	});
 
-	it('initLocale игнорирует мусор в хранилище', () => {
+	it("initLocale игнорирует мусор в хранилище", () => {
 		const { store } = stubStorage();
-		store['locale'] = 'fr';
+		store["locale"] = "fr";
 		initLocale();
-		expect(getLocale()).toBe('ru');
+		expect(getLocale()).toBe("ru");
 	});
 
-	it('setLocale сохраняет выбор в localStorage', () => {
+	it("setLocale сохраняет выбор в localStorage", () => {
 		const { store } = stubStorage();
 		initLocale();
-		setLocale('en');
-		expect(store['locale']).toBe('en');
-		expect(getLocale()).toBe('en');
+		setLocale("en");
+		expect(store["locale"]).toBe("en");
+		expect(getLocale()).toBe("en");
 	});
 });

web/src/lib/i18n/locale.svelte.ts

@@ -1,15 +1,15 @@
-import { BASE_LOCALE, isLocale, type Dict, type Locale } from './dict';
-import { ru } from './ru';
-import { en } from './en';
+import { BASE_LOCALE, isLocale, type Dict, type Locale } from "./dict";
+import { ru } from "./ru";
+import { en } from "./en";
 
-const STORAGE_KEY = 'locale';
+const STORAGE_KEY = "locale";
 
 const DICTS: Record<Locale, Dict> = { ru, en };
 
 let locale = $state<Locale>(BASE_LOCALE);
 
 function storage(): Storage | null {
-	return typeof localStorage === 'undefined' ? null : localStorage;
+	return typeof localStorage === "undefined" ? null : localStorage;
 }
 
 export function getLocale(): Locale {
@@ -29,13 +29,11 @@ export function getMergedDict(): Dict {
 		get(_target, section: string) {
 			const a = (active as unknown as Record<string, unknown>)[section];
 			const b = (base as unknown as Record<string, unknown>)[section];
-			if (
-				a && b && typeof a === 'object' && typeof b === 'object'
-			) {
+			if (a && b && typeof a === "object" && typeof b === "object") {
 				return { ...(b as object), ...(a as object) };
 			}
 			return a ?? b;
-		}
+		},
 	}) as Dict;
 }
 
@@ -47,14 +45,14 @@ export function setLocale(next: Locale): void {
 
 /** Читает сохранённый выбор и синхронизирует атрибут lang. Вызывается на клиенте. */
 export function initLocale(): void {
-	if (typeof window === 'undefined') return;
+	if (typeof window === "undefined") return;
 	const saved = storage()?.getItem(STORAGE_KEY);
 	if (isLocale(saved)) locale = saved;
 	syncLangAttr();
 }
 
 function syncLangAttr(): void {
-	if (typeof document !== 'undefined') {
+	if (typeof document !== "undefined") {
 		document.documentElement.lang = locale;
 	}
 }

web/src/lib/i18n/matching.test.ts

@@ -1,94 +1,101 @@
-import { describe, expect, it } from 'vitest';
-import { TOOLS } from '../registry';
-import { normalizeForSearch, scoreDoc, type SearchDoc } from './matching';
-import { setLocale } from './locale.svelte';
-import { toolSearchDoc } from './tool-strings';
+import { describe, expect, it } from "vitest";
+import { TOOLS } from "../registry";
+import { normalizeForSearch, scoreDoc, type SearchDoc } from "./matching";
+import { setLocale } from "./locale.svelte";
+import { toolSearchDoc } from "./tool-strings";
 
-describe('normalizeForSearch', () => {
-	it('нижний регистр', () => {
-		expect(normalizeForSearch('Rotate PNG')).toBe('rotate png');
+describe("normalizeForSearch", () => {
+	it("нижний регистр", () => {
+		expect(normalizeForSearch("Rotate PNG")).toBe("rotate png");
 	});
 
-	it('ё заменяется на е', () => {
-		expect(normalizeForSearch('Ёлка и ёж')).toBe('елка и еж');
+	it("ё заменяется на е", () => {
+		expect(normalizeForSearch("Ёлка и ёж")).toBe("елка и еж");
 	});
 
-	it('диакритика снимается через NFD', () => {
-		expect(normalizeForSearch('café')).toBe('cafe');
-		expect(normalizeForSearch('Über')).toBe('uber');
+	it("диакритика снимается через NFD", () => {
+		expect(normalizeForSearch("café")).toBe("cafe");
+		expect(normalizeForSearch("Über")).toBe("uber");
 	});
 });
 
-describe('scoreDoc', () => {
+describe("scoreDoc", () => {
 	const doc: SearchDoc = {
-		id: 'rotate-free-png',
-		titles: ['Повернуть на произвольный угол'],
-		descriptions: ['Поворот на любой угол. Холст расширяется под новые габариты.']
+		id: "rotate-free-png",
+		titles: ["Повернуть на произвольный угол"],
+		descriptions: [
+			"Поворот на любой угол. Холст расширяется под новые габариты.",
+		],
 	};
 
-	it('пустой запрос даёт нейтральный балл', () => {
-		expect(scoreDoc(doc, '')).toBe(1);
+	it("пустой запрос даёт нейтральный балл", () => {
+		expect(scoreDoc(doc, "")).toBe(1);
 	});
 
-	it('префикс названия ценнее подстроки', () => {
-		const prefix = scoreDoc(doc, normalizeForSearch('повер'));
-		const infix = scoreDoc(doc, normalizeForSearch('верну'));
+	it("префикс названия ценнее подстроки", () => {
+		const prefix = scoreDoc(doc, normalizeForSearch("повер"));
+		const infix = scoreDoc(doc, normalizeForSearch("верну"));
 		expect(prefix!).toBe(100);
 		expect(infix!).toBeGreaterThan(30);
 	});
 
-	it('подстрока названия ценнее совпадения в описании', () => {
-		const title = scoreDoc(doc, normalizeForSearch('угол'));
-		const desc = scoreDoc(doc, normalizeForSearch('габариты'));
+	it("подстрока названия ценнее совпадения в описании", () => {
+		const title = scoreDoc(doc, normalizeForSearch("угол"));
+		const desc = scoreDoc(doc, normalizeForSearch("габариты"));
 		expect(title!).toBeGreaterThan(desc!);
 	});
 
-	it('нет совпадения — null', () => {
-		expect(scoreDoc(doc, normalizeForSearch('квант'))).toBeNull();
+	it("нет совпадения — null", () => {
+		expect(scoreDoc(doc, normalizeForSearch("квант"))).toBeNull();
 	});
 
-	it('запрос с опечаткой ё/е всё равно находит', () => {
-		expect(scoreDoc(doc, normalizeForSearch('повёрнут'))).not.toBeNull();
+	it("запрос с опечаткой ё/е всё равно находит", () => {
+		expect(scoreDoc(doc, normalizeForSearch("повёрнут"))).not.toBeNull();
 	});
 });
 
-describe('кросс-языковой поиск на реальном реестре', () => {
-	it('английский запрос находит инструмент при русской локали', () => {
-		setLocale('ru');
+describe("кросс-языковой поиск на реальном реестре", () => {
+	it("английский запрос находит инструмент при русской локали", () => {
+		setLocale("ru");
 		const hits = TOOLS.filter((tool) => {
-			const s = scoreDoc(toolSearchDoc(tool), normalizeForSearch('rotate'));
+			const s = scoreDoc(toolSearchDoc(tool), normalizeForSearch("rotate"));
 			return s !== null && s > 0;
 		}).map((tool) => tool.id);
-		expect(hits).toContain('rotate-png');
-		expect(hits).toContain('rotate-free-png');
+		expect(hits).toContain("rotate-png");
+		expect(hits).toContain("rotate-free-png");
 	});
 
-	it('русский запрос находит инструмент при английской локали', () => {
-		setLocale('en');
+	it("русский запрос находит инструмент при английской локали", () => {
+		setLocale("en");
 		try {
-			for (const q of ['повернуть', 'пово']) {
+			for (const q of ["повернуть", "пово"]) {
 				const hits = TOOLS.filter((tool) => {
 					const s = scoreDoc(toolSearchDoc(tool), normalizeForSearch(q));
 					return s !== null && s > 0;
 				}).map((tool) => tool.id);
-				expect(hits, `запрос «${q}» при en-локали`).toContain('rotate-png');
-				expect(hits, `запрос «${q}» при en-локали`).toContain('rotate-free-png');
+				expect(hits, `запрос «${q}» при en-локали`).toContain("rotate-png");
+				expect(hits, `запрос «${q}» при en-локали`).toContain(
+					"rotate-free-png",
+				);
 			}
 		} finally {
-			setLocale('ru');
+			setLocale("ru");
 		}
 	});
 
-	it('поиск работает и по описанию, не только по названию', () => {
-		setLocale('en');
+	it("поиск работает и по описанию, не только по названию", () => {
+		setLocale("en");
 		try {
 			const hits = TOOLS.filter((tool) => {
-				const s = scoreDoc(toolSearchDoc(tool), normalizeForSearch('полупрозрачные'));
+				const s = scoreDoc(
+					toolSearchDoc(tool),
+					normalizeForSearch("полупрозрачные"),
+				);
 				return s !== null && s > 0;
 			}).map((tool) => tool.id);
-			expect(hits).toContain('png-is-transparent');
+			expect(hits).toContain("png-is-transparent");
 		} finally {
-			setLocale('ru');
+			setLocale("ru");
 		}
 	});
 });

web/src/lib/i18n/matching.ts

@@ -4,9 +4,9 @@
 export function normalizeForSearch(value: string): string {
 	return value
 		.toLowerCase()
-		.replaceAll('ё', 'е')
-		.normalize('NFD')
-		.replace(/\p{M}/gu, '');
+		.replaceAll("ё", "е")
+		.normalize("NFD")
+		.replace(/\p{M}/gu, "");
 }
 
 export type SearchDoc = {
@@ -48,7 +48,10 @@ function bestTitleScore(titles: string[], q: string): number | null {
  * Скоринг документа против нормализованного запроса.
  * Пустой запрос — нейтральный балл; отсутствие совпадения — null.
  */
-export function scoreDoc(doc: SearchDoc, normalizedQuery: string): number | null {
+export function scoreDoc(
+	doc: SearchDoc,
+	normalizedQuery: string,
+): number | null {
 	if (normalizedQuery.length === 0) return 1;
 	if (normalizeForSearch(doc.id).includes(normalizedQuery)) {
 		const at = normalizeForSearch(doc.id).indexOf(normalizedQuery);

web/src/lib/i18n/search-coverage.test.ts

@@ -1,8 +1,8 @@
-import { describe, expect, it } from 'vitest';
-import { TOOLS } from '../registry';
-import { normalizeForSearch, scoreDoc } from './matching';
-import { toolSearchDoc } from './tool-strings';
-import { isChainable } from '../registry';
+import { describe, expect, it } from "vitest";
+import { TOOLS } from "../registry";
+import { normalizeForSearch, scoreDoc } from "./matching";
+import { toolSearchDoc } from "./tool-strings";
+import { isChainable } from "../registry";
 
 function hits(q: string): string[] {
 	const nq = normalizeForSearch(q);
@@ -12,13 +12,15 @@ function hits(q: string): string[] {
 	}).map((t) => t.id);
 }
 
-describe('полнота поиска', () => {
-	it('генератор (не chainable) находится поиском — раньше отфильтровывался', () => {
-		expect(isChainable(TOOLS.find((t) => t.id === 'color-wheel-png')!)).toBe(false);
-		expect(hits('color wheel')).toContain('color-wheel-png');
+describe("полнота поиска", () => {
+	it("генератор (не chainable) находится поиском — раньше отфильтровывался", () => {
+		expect(isChainable(TOOLS.find((t) => t.id === "color-wheel-png")!)).toBe(
+			false,
+		);
+		expect(hits("color wheel")).toContain("color-wheel-png");
 	});
 
-	it('анализатор-маска тоже ищется', () => {
-		expect(hits('уникальных цветов')).toContain('unique-color-mask-png');
+	it("анализатор-маска тоже ищется", () => {
+		expect(hits("уникальных цветов")).toContain("unique-color-mask-png");
 	});
 });

web/src/lib/i18n/smoke-i18n.test.ts

@@ -1,82 +1,96 @@
-import { afterEach, describe, expect, it, vi } from 'vitest';
-import { setLocale } from './locale.svelte';
-import { t } from './t';
-import { LOCALE_TAGS } from './dict';
-import { normalizeForSearch, scoreDoc } from './matching';
-import { toolSearchDoc } from './tool-strings';
-import { TOOLS } from '../registry';
+import { afterEach, describe, expect, it, vi } from "vitest";
+import { setLocale } from "./locale.svelte";
+import { t } from "./t";
+import { LOCALE_TAGS } from "./dict";
+import { normalizeForSearch, scoreDoc } from "./matching";
+import { toolSearchDoc } from "./tool-strings";
+import { TOOLS } from "../registry";
 
 afterEach(() => {
-	setLocale('ru');
+	setLocale("ru");
 	vi.unstubAllGlobals();
 });
 
-describe('Смоук §6 i18n', () => {
-	it('1. html lang следует за локалью', () => {
-		const doc = { documentElement: { lang: '' } };
-		vi.stubGlobal('document', doc);
-		setLocale('en');
-		expect(doc.documentElement.lang).toBe('en');
-		setLocale('ru');
-		expect(doc.documentElement.lang).toBe('ru');
+describe("Смоук §6 i18n", () => {
+	it("1. html lang следует за локалью", () => {
+		const doc = { documentElement: { lang: "" } };
+		vi.stubGlobal("document", doc);
+		setLocale("en");
+		expect(doc.documentElement.lang).toBe("en");
+		setLocale("ru");
+		expect(doc.documentElement.lang).toBe("ru");
 	});
 
-	it('3. Ключевые секции переведены без смеси языков', () => {
+	it("3. Ключевые секции переведены без смеси языков", () => {
 		const samples: Array<[string, string, string]> = [
-			['header.workspace', 'Рабочая область', 'Workspace'],
-			['catalog.heading', 'Каталог инструментов', 'Tool catalog'],
-			['home.heroTitle', 'Что делаем с изображением?', 'What do you want to do'],
-			['chain.inputLegend', 'Вход', 'Input'],
-			['resultCard.nextTool', 'Следующий инструмент', 'Next tool'],
-			['download.busy', 'Готовим файл', 'Preparing file']
+			["header.workspace", "Рабочая область", "Workspace"],
+			["catalog.heading", "Каталог инструментов", "Tool catalog"],
+			[
+				"home.heroTitle",
+				"Что делаем с изображением?",
+				"What do you want to do",
+			],
+			["chain.inputLegend", "Вход", "Input"],
+			["resultCard.nextTool", "Следующий инструмент", "Next tool"],
+			["download.busy", "Готовим файл", "Preparing file"],
 		];
 		for (const [key, ruPart, enPart] of samples) {
-			setLocale('ru');
-			expect(t(key), key + ' @ru').toContain(ruPart);
-			setLocale('en');
-			expect(t(key), key + ' @en').toContain(enPart);
+			setLocale("ru");
+			expect(t(key), key + " @ru").toContain(ruPart);
+			setLocale("en");
+			expect(t(key), key + " @en").toContain(enPart);
 		}
 	});
 
-	it('5. Ошибки с vars локализуются на оба языка', () => {
-		setLocale('ru');
-		expect(t('errors.badHex', { value: '#zz' })).toBe('Некорректный HEX-цвет: "#zz"');
-		expect(t('errors.toolNotFound', { id: 'x' })).toContain('не найден');
-		setLocale('en');
-		expect(t('errors.badHex', { value: '#zz' })).toBe('Invalid HEX color: "#zz"');
+	it("5. Ошибки с vars локализуются на оба языка", () => {
+		setLocale("ru");
+		expect(t("errors.badHex", { value: "#zz" })).toBe(
+			'Некорректный HEX-цвет: "#zz"',
+		);
+		expect(t("errors.toolNotFound", { id: "x" })).toContain("не найден");
+		setLocale("en");
+		expect(t("errors.badHex", { value: "#zz" })).toBe(
+			'Invalid HEX color: "#zz"',
+		);
 	});
 
-	it('6. Поиск кросс-языковой в обе стороны', () => {
+	it("6. Поиск кросс-языковой в обе стороны", () => {
 		const ids = (q: string) =>
 			TOOLS.filter((tool) => {
 				const s = scoreDoc(toolSearchDoc(tool), normalizeForSearch(q));
 				return s !== null && s > 0;
 			}).map((tool) => tool.id);
 
-		setLocale('ru');
-		let hits = ids('rotate');
-		expect(hits).toContain('rotate-png');
-		hits = ids('повер');
-		expect(hits).toContain('rotate-png');
+		setLocale("ru");
+		let hits = ids("rotate");
+		expect(hits).toContain("rotate-png");
+		hits = ids("повер");
+		expect(hits).toContain("rotate-png");
 
-		setLocale('en');
-		hits = ids('пово');
-		expect(hits).toContain('rotate-free-png');
-		hits = ids('rotate');
-		expect(hits).toContain('rotate-png');
+		setLocale("en");
+		hits = ids("пово");
+		expect(hits).toContain("rotate-free-png");
+		hits = ids("rotate");
+		expect(hits).toContain("rotate-png");
 	});
 
-	it('6b. Ё не мешает совпадению', () => {
-		const blackWhite = TOOLS.find((tool) => tool.id === 'black-and-white-png')!;
-		setLocale('ru');
-		const hit = scoreDoc(toolSearchDoc(blackWhite), normalizeForSearch('ЧЁРНО'));
+	it("6b. Ё не мешает совпадению", () => {
+		const blackWhite = TOOLS.find((tool) => tool.id === "black-and-white-png")!;
+		setLocale("ru");
+		const hit = scoreDoc(
+			toolSearchDoc(blackWhite),
+			normalizeForSearch("ЧЁРНО"),
+		);
 		expect(hit).not.toBeNull();
-		const withoutYo = scoreDoc(toolSearchDoc(blackWhite), normalizeForSearch('черно'));
+		const withoutYo = scoreDoc(
+			toolSearchDoc(blackWhite),
+			normalizeForSearch("черно"),
+		);
 		expect(withoutYo).not.toBeNull();
 	});
 
-	it('7. Теги локалей для форматирования чисел корректны', () => {
-		expect(LOCALE_TAGS.ru).toBe('ru-RU');
-		expect(LOCALE_TAGS.en).toBe('en-US');
+	it("7. Теги локалей для форматирования чисел корректны", () => {
+		expect(LOCALE_TAGS.ru).toBe("ru-RU");
+		expect(LOCALE_TAGS.en).toBe("en-US");
 	});
 });

web/src/lib/i18n/t.ts

@@ -1,9 +1,12 @@
-import { getMergedDict } from './locale.svelte';
+import { getMergedDict } from "./locale.svelte";
 
-export function interpolate(template: string, vars?: Record<string, string | number>): string {
+export function interpolate(
+	template: string,
+	vars?: Record<string, string | number>,
+): string {
 	if (!vars) return template;
 	return template.replace(/\{(\w+)\}/g, (match, name: string) =>
-		name in vars ? String(vars[name]) : match
+		name in vars ? String(vars[name]) : match,
 	);
 }
 
@@ -11,14 +14,21 @@ export function interpolate(template: string, vars?: Record<string, string | num
  * Перевод по точечному пути вида 'header.workspace' или 'errors.ERR_BAD_HEX'.
  * Сначала активная локаль, затем базовая; если ключа нет нигде — возвращается сам путь.
  */
-export function t(path: string, vars?: Record<string, string | number>): string {
+export function t(
+	path: string,
+	vars?: Record<string, string | number>,
+): string {
 	let node: unknown = getMergedDict();
-	for (const part of path.split('.')) {
-		if (node && typeof node === 'object' && part in (node as Record<string, unknown>)) {
+	for (const part of path.split(".")) {
+		if (
+			node &&
+			typeof node === "object" &&
+			part in (node as Record<string, unknown>)
+		) {
 			node = (node as Record<string, unknown>)[part];
 		} else {
 			return path;
 		}
 	}
-	return typeof node === 'string' ? interpolate(node, vars) : path;
+	return typeof node === "string" ? interpolate(node, vars) : path;
 }

web/src/lib/i18n/tool-strings.ts

@@ -1,7 +1,7 @@
-import type { ParamDef, ToolEntry } from '$lib/registry';
-import type { SearchDoc } from './matching';
-import { getMergedDict } from './locale.svelte';
-import { ru } from './ru';
+import type { ParamDef, ToolEntry } from "$lib/registry";
+import type { SearchDoc } from "./matching";
+import { getMergedDict } from "./locale.svelte";
+import { ru } from "./ru";
 
 /**
  * Строки инструмента на активной локали.
@@ -23,10 +23,14 @@ export function paramLabel(tool: ToolEntry, param: ParamDef): string {
 	return viaDef.label ?? param.id;
 }
 
-export function optionLabel(tool: ToolEntry, param: ParamDef, value: string): string {
+export function optionLabel(
+	tool: ToolEntry,
+	param: ParamDef,
+	value: string,
+): string {
 	const viaDict = getMergedDict().tools[tool.id]?.options?.[param.id]?.[value];
 	if (viaDict) return viaDict;
-	if (param.type === 'select') {
+	if (param.type === "select") {
 		return param.options.find((o) => o.value === value)?.label ?? value;
 	}
 	return value;
@@ -45,11 +49,15 @@ export function toolSearchDoc(tool: ToolEntry): SearchDoc {
 	const active = getMergedDict().tools[tool.id];
 	return {
 		id: tool.id,
-		titles: dedupe([active?.title ?? '', ru.tools[tool.id]?.title ?? '', tool.title]),
+		titles: dedupe([
+			active?.title ?? "",
+			ru.tools[tool.id]?.title ?? "",
+			tool.title,
+		]),
 		descriptions: dedupe([
-			active?.description ?? '',
-			ru.tools[tool.id]?.description ?? '',
-			tool.description
-		])
+			active?.description ?? "",
+			ru.tools[tool.id]?.description ?? "",
+			tool.description,
+		]),
 	};
 }