From 92cc5909594a8fe25f6cc70427b219e0dc22d774 Mon Sep 17 00:00:00 2001
From: Ku6epXBOCTuK <Ku6epXBOCTuK@gmail.com>
Date: Tue, 6 Oct 2026 15:30:24 +0500
Subject: [PATCH] feat: add info\warning badge, update size range workflow

---
 docs/backlog.md                               |   8 +-
 .../fields/schema/DimensionField.svelte       |  20 +++-
 .../lib/components/schema/PreviewTile.svelte  |  46 ++++++--
 .../lib/components/schema/SchemaFields.svelte |  25 ++++-
 .../components/schema/SchemaPreview.svelte    |  34 +++---
 .../components/schema/SchemaResultTile.svelte |  12 +-
 .../components/schema/SchemaSourceTile.svelte |   5 +-
 .../components/schema/SchemaToolView.svelte   |  25 ++++-
 .../schema/schema-preview-model.test.ts       | 106 ++++--------------
 .../components/schema/schema-preview-model.ts |  54 ++-------
 web/src/lib/components/ui/Badge.svelte        |   2 +-
 web/src/lib/i18n/en.ts                        |  10 +-
 web/src/lib/i18n/ru.ts                        |  10 +-
 web/src/lib/registry-schema.test.ts           |  59 ++++++++++
 web/src/lib/registry-schema.ts                |  91 +++++++++++++--
 web/src/lib/registry/index.ts                 |   1 +
 web/src/lib/registry/registry.test.ts         |  47 ++++++++
 web/src/lib/registry/tools/geometry.ts        |  32 +++++-
 web/src/lib/registry/types.ts                 |   9 ++
 19 files changed, 402 insertions(+), 194 deletions(-)

diff --git a/docs/backlog.md b/docs/backlog.md
index 93f1401..f9fc6e1 100644
--- a/docs/backlog.md
+++ b/docs/backlog.md
@@ -85,7 +85,6 @@
       шрифты с кириллицей? сделать галочку "только с кириллицей"??? (решение о
       наборе и лицензиях: `docs/plan-platform.md` §4 — только OFL/Apache с
       паспортом, семейства с кириллицей)
-- [ ] проверить настройки range slider на crop-png - слишком большие значения
 - [ ] Свести convert-страницы (`convert-png-to-jpg`, `convert-png-to-webp`,
       `png-to-bmp`) на один инструмент `convert` — зависит от S1f
       (`docs/plan-seo.md` §4). Мешает не только `quality` (он живёт в схеме
@@ -159,6 +158,13 @@
 - [ ] Рассмотреть необходимость всех этих пропсов в `SchemaPreview.svelte` они
       дублируют друг друга `ontextsource`, `onrendertext`, `oncopytext`,
       `ondownloadtxt`, `ondownload`,
+- [ ] resize keep aspect - работает, но немного не очевидное поведение при
+      прямоугольной картинке и выборе размера через быстрые кнопки (например
+      256х256). Воспроизведение поведения: keep aspect включено, загружаем
+      прямоугольную картинку 832 × 1232, картинка рескейлится до 173 × 256,
+      выключаем keep aspect, картинка рескейлится до 256 × 256 (с искажением
+      пропорций), включаем keep aspect - картинка рескейлится до размера 256 ×
+      379
 - [ ] Переделать внешний вид инструментов без настроек, например Remove alpha
       channel PNG "remove-alpha-channel-png". Сейчас выглядит слишком пустым.
 - [ ] Пересмотреть поля - Plate, Position, Font Style - сейчас второй label
diff --git a/web/src/lib/components/fields/schema/DimensionField.svelte b/web/src/lib/components/fields/schema/DimensionField.svelte
index 9f79775..00a02ed 100644
--- a/web/src/lib/components/fields/schema/DimensionField.svelte
+++ b/web/src/lib/components/fields/schema/DimensionField.svelte
@@ -13,11 +13,25 @@
 		label: string;
 		value: unknown;
 		spec: FieldSpec;
+		/** Размеры входа шага: потолок осей для maxFromSource-полей. */
+		sourceDims?: Dimension;
 		onchange?: (value: Dimension, axis?: "width" | "height" | "both") => void;
 	}
-	let { label, value, spec, onchange }: Props = $props();
+	let {
+		label,
+		value,
+		spec,
+		sourceDims = undefined,
+		onchange,
+	}: Props = $props();
 
 	const sp = $derived(spec as DimensionSpec);
+	const maxW = $derived(
+		sp.maxFromSource && sourceDims ? sourceDims.width : sp.max,
+	);
+	const maxH = $derived(
+		sp.maxFromSource && sourceDims ? sourceDims.height : sp.max,
+	);
 	const current = $derived.by(() => {
 		const v = value as Partial<Dimension> | undefined;
 		return {
@@ -49,7 +63,7 @@
 			<input
 				type="number"
 				min={sp.min}
-				max={sp.max}
+				max={maxW}
 				value={current.width}
 				oninput={(e) =>
 					setAxis("width", Number((e.target as HTMLInputElement).value))}
@@ -60,7 +74,7 @@
 			<input
 				type="number"
 				min={sp.min}
-				max={sp.max}
+				max={maxH}
 				value={current.height}
 				oninput={(e) =>
 					setAxis("height", Number((e.target as HTMLInputElement).value))}
diff --git a/web/src/lib/components/schema/PreviewTile.svelte b/web/src/lib/components/schema/PreviewTile.svelte
index 6161cd5..5228f94 100644
--- a/web/src/lib/components/schema/PreviewTile.svelte
+++ b/web/src/lib/components/schema/PreviewTile.svelte
@@ -2,6 +2,7 @@
 	import type { InputMode, ResultKind } from "$lib/registry";
 	import { RefreshCw } from "@lucide/svelte";
 	import { t } from "$lib/i18n/t";
+	import Badge from "$lib/components/ui/Badge.svelte";
 	import type { Snippet } from "svelte";
 
 	interface Props {
@@ -11,6 +12,9 @@
 		loading?: boolean;
 		parts?: number;
 		partsDims?: string;
+		dims?: string;
+		note?: string;
+		noteTone?: "warning" | "info";
 	}
 	let {
 		label,
@@ -19,24 +23,31 @@
 		loading = false,
 		parts = undefined,
 		partsDims = undefined,
+		dims = undefined,
+		note = undefined,
+		noteTone = "warning",
 	}: Props = $props();
 </script>
 
 <figure class="tile">
 	<figcaption>
-		<span>
-			{label}
-			{#if parts !== undefined}
-				<span class="count">
-					{parts}
-					{t("resultCard.parts")}{#if partsDims}
-						· {partsDims}{/if}
-				</span>
-			{/if}
+		<span class="tile-label">
+			<span
+				>{label}{#if parts !== undefined}<span class="dims"
+						>: {parts}
+						{t("resultCard.parts")}{#if partsDims}
+							· {partsDims}{/if}</span
+					>{:else if dims}<span class="dims">: {dims}</span>{/if}</span
+			>
 			{#if loading}
 				<RefreshCw class="rotating" size="12" />
 			{/if}
 		</span>
+		<span class="tile-note">
+			{#if note}
+				<Badge tone={noteTone} label={note} />
+			{/if}
+		</span>
 	</figcaption>
 	<div class="canvas" class:checker={mode === "image"}>
 		{@render children()}
@@ -47,7 +58,10 @@
 	.tile figcaption {
 		display: flex;
 		align-items: center;
+		justify-content: space-between;
 		gap: var(--space-m);
+		/* Резерв под бейдж: строка не прыгает, когда заметка появляется. */
+		min-height: var(--space-xxl);
 		margin-bottom: var(--space-m);
 		font: var(--font-size-s) var(--font-mono);
 		text-transform: uppercase;
@@ -56,8 +70,18 @@
 			animation: rotate var(--duration-l) linear infinite;
 		}
 	}
-	.count {
-		margin-left: var(--space-m);
+	.tile-label {
+		display: inline-flex;
+		align-items: center;
+		gap: var(--space-m);
+	}
+	/* Место под заметки результата: бейджи-предупреждения. */
+	.tile-note {
+		display: inline-flex;
+		align-items: center;
+		gap: var(--space-m);
+	}
+	.dims {
 		color: var(--color-main);
 	}
 	.canvas {
diff --git a/web/src/lib/components/schema/SchemaFields.svelte b/web/src/lib/components/schema/SchemaFields.svelte
index 5f4d8c7..929e49f 100644
--- a/web/src/lib/components/schema/SchemaFields.svelte
+++ b/web/src/lib/components/schema/SchemaFields.svelte
@@ -1,10 +1,11 @@
 <script lang="ts">
 	import type {
+		Dimension,
 		FieldSpec,
 		FieldSpecKind,
 		ToolSchema,
 	} from "$lib/registry-schema";
-	import { resolveLayoutGroups } from "$lib/registry-schema";
+	import { effectiveMax, resolveLayoutGroups } from "$lib/registry-schema";
 	import { fieldLabel, groupLabel } from "$lib/i18n/schema-tool-strings";
 	import { t } from "$lib/i18n/t";
 	import { RotateCcw } from "@lucide/svelte";
@@ -30,6 +31,7 @@
 		spec: FieldSpec;
 		toolId: string;
 		fieldId: string;
+		sourceDims?: Dimension;
 		onchange?: (value: unknown, axis?: "width" | "height" | "both") => void;
 	}
 
@@ -54,6 +56,8 @@
 		schema: ToolSchema<Record<string, unknown>>;
 		values: Record<string, unknown>;
 		toolId: string;
+		/** Размеры входа шага: для maxFromSource-полей (crop и т.п.). */
+		sourceDims?: Dimension;
 		onchange: (
 			id: string,
 			value: unknown,
@@ -61,9 +65,23 @@
 		) => void;
 		onreset: () => void;
 	}
-	let { schema, values, toolId, onchange, onreset }: Props = $props();
+	let {
+		schema,
+		values,
+		toolId,
+		sourceDims = undefined,
+		onchange,
+		onreset,
+	}: Props = $props();
 
 	const layoutGroups = $derived(resolveLayoutGroups(schema));
+
+	function effectiveSpec(spec: FieldSpec): FieldSpec {
+		if (sourceDims && spec.kind === "number" && spec.maxFromSource) {
+			return { ...spec, max: effectiveMax(spec, sourceDims) };
+		}
+		return spec;
+	}
 </script>
 
 {#each layoutGroups as group (group.key)}
@@ -81,9 +99,10 @@
 			<Control
 				label={fieldLabel(schema.fields[id], id)}
 				value={values[id]}
-				spec={schema.fields[id].spec}
+				spec={effectiveSpec(schema.fields[id].spec)}
 				{toolId}
 				fieldId={id}
+				{sourceDims}
 				onchange={(v, axis) => onchange(id, v, axis)}
 			/>
 		{/each}
diff --git a/web/src/lib/components/schema/SchemaPreview.svelte b/web/src/lib/components/schema/SchemaPreview.svelte
index 47a82ec..1ca4e71 100644
--- a/web/src/lib/components/schema/SchemaPreview.svelte
+++ b/web/src/lib/components/schema/SchemaPreview.svelte
@@ -1,13 +1,17 @@
 <script lang="ts">
-	import MetaList from "$lib/components/display/MetaList.svelte";
-	import { buildSchemaPreviewModel } from "./schema-preview-model";
+	import { hasPreviewResult } from "./schema-preview-model";
 	import SchemaActions from "./SchemaActions.svelte";
 	import SchemaResultTile from "./SchemaResultTile.svelte";
 	import SchemaSourceTile from "./SchemaSourceTile.svelte";
 	import type { PixelImage } from "$lib/core/types";
 	import type { OutputMime } from "$lib/core/io";
 	import { t } from "$lib/i18n/t";
-	import type { FileResult, InputMode, ResultKind } from "$lib/registry";
+	import type {
+		FileResult,
+		InputMode,
+		ResultKind,
+		ResultNote,
+	} from "$lib/registry";
 
 	interface Props {
 		inputMode: InputMode;
@@ -15,6 +19,7 @@
 		toolId: string;
 		source: PixelImage | null;
 		result: PixelImage | null;
+		resultNote?: ResultNote | null;
 		fileResult?: FileResult | null;
 		textSource?: string;
 		textResult?: string | null;
@@ -39,6 +44,7 @@
 		toolId,
 		source,
 		result,
+		resultNote = null,
 		fileResult = null,
 		textSource = "",
 		textResult = null,
@@ -58,11 +64,8 @@
 		onquality,
 	}: Props = $props();
 
-	const model = $derived(
-		buildSchemaPreviewModel(
-			{ inputMode, resultKind, source, result, fileResult, textResult },
-			t,
-		),
+	const hasResult = $derived(
+		hasPreviewResult({ inputMode, resultKind, result, fileResult, textResult }),
 	);
 </script>
 
@@ -71,7 +74,7 @@
 	<SchemaActions
 		{inputMode}
 		{resultKind}
-		canDownload={model.hasResult}
+		canDownload={hasResult}
 		{running}
 		{format}
 		{quality}
@@ -100,6 +103,7 @@
 	<SchemaResultTile
 		{resultKind}
 		{result}
+		{resultNote}
 		{fileResult}
 		{textResult}
 		{textVars}
@@ -110,15 +114,6 @@
 	/>
 </div>
 
-<div class="meta">
-	<MetaList
-		items={[
-			{ caption: t("sourceCard.source"), value: model.sourceValue },
-			{ caption: t("resultCard.result"), value: model.resultValue },
-		]}
-	/>
-</div>
-
 <style>
 	.panel-head {
 		display: flex;
@@ -145,9 +140,6 @@
 		grid-template-columns: 1fr 1fr;
 		gap: var(--space-l);
 	}
-	.meta {
-		margin-top: var(--space-l);
-	}
 	@media (--bp-tablet) {
 		.pair {
 			grid-template-columns: 1fr;
diff --git a/web/src/lib/components/schema/SchemaResultTile.svelte b/web/src/lib/components/schema/SchemaResultTile.svelte
index baf0a16..6364865 100644
--- a/web/src/lib/components/schema/SchemaResultTile.svelte
+++ b/web/src/lib/components/schema/SchemaResultTile.svelte
@@ -2,7 +2,7 @@
 	import { toDataUrl } from "$lib/core/io";
 	import type { PixelImage } from "$lib/core/types";
 	import { t } from "$lib/i18n/t";
-	import type { FileResult, ResultKind } from "$lib/registry";
+	import type { FileResult, ResultKind, ResultNote } from "$lib/registry";
 	import { Check } from "@lucide/svelte";
 	import SchemaTextResult from "./SchemaTextResult.svelte";
 	import PreviewTile from "./PreviewTile.svelte";
@@ -10,6 +10,7 @@
 	interface Props {
 		resultKind?: ResultKind;
 		result: PixelImage | null;
+		resultNote?: ResultNote | null;
 		fileResult?: FileResult | null;
 		textResult?: string | null;
 		textVars?: Record<string, string | number>;
@@ -21,6 +22,7 @@
 	let {
 		resultKind = "image",
 		result,
+		resultNote = null,
 		fileResult = null,
 		textResult = null,
 		textVars = undefined,
@@ -31,6 +33,11 @@
 	}: Props = $props();
 
 	const resultUrl = $derived(result ? toDataUrl(result) : null);
+	const resultDims = $derived(
+		resultKind === "image" && result
+			? `${result.width} × ${result.height}`
+			: undefined,
+	);
 	const partUrls = $derived(
 		resultKind === "files" && fileResult
 			? fileResult.files.map((file) => ({
@@ -57,6 +64,9 @@
 	loading={running}
 	{parts}
 	{partsDims}
+	dims={resultDims}
+	note={resultNote ? t(resultNote.key) : undefined}
+	noteTone={resultNote?.tone ?? "warning"}
 >
 	<div
 		class="canvas"
diff --git a/web/src/lib/components/schema/SchemaSourceTile.svelte b/web/src/lib/components/schema/SchemaSourceTile.svelte
index efa094f..f7f06c3 100644
--- a/web/src/lib/components/schema/SchemaSourceTile.svelte
+++ b/web/src/lib/components/schema/SchemaSourceTile.svelte
@@ -27,6 +27,9 @@
 	}: Props = $props();
 
 	const sourceUrl = $derived(source ? toDataUrl(source) : null);
+	const sourceDims = $derived(
+		source ? `${source.width} × ${source.height}` : undefined,
+	);
 
 	let dragging = $state(false);
 	let input = $state<HTMLInputElement | null>(null);
@@ -63,7 +66,7 @@
 	}
 </script>
 
-<PreviewTile label={t("sourceCard.source")} viewMode={mode}>
+<PreviewTile label={t("sourceCard.source")} viewMode={mode} dims={sourceDims}>
 	{#if mode === "text"}
 		<div class="text-source-wrap">
 			<SchemaTextSource
diff --git a/web/src/lib/components/schema/SchemaToolView.svelte b/web/src/lib/components/schema/SchemaToolView.svelte
index 4c484c0..eb18030 100644
--- a/web/src/lib/components/schema/SchemaToolView.svelte
+++ b/web/src/lib/components/schema/SchemaToolView.svelte
@@ -40,6 +40,7 @@
 	} from "$lib/registry";
 	import {
 		applySourceDefaults,
+		clampSourceAwareMaxes,
 		defaultSchemaParams,
 		withAspectLock,
 		type Dimension,
@@ -105,6 +106,11 @@
 	// он — единый источник качества; dropdown редактирует его же.
 	const qualityParamId = $derived(lastTool.output?.qualityParamId);
 	const lastParams = $derived(steps.at(-1)?.params);
+	const resultNote = $derived(
+		result && lastTool.resultNote
+			? lastTool.resultNote(lastParams ?? {}, result)
+			: null,
+	);
 	const currentQuality = $derived.by(() => {
 		const setting = outputFormatByMime(format).settings?.quality;
 		if (!setting) return undefined;
@@ -205,7 +211,8 @@
 				}
 			}
 		}
-		steps = steps.with(index, { ...step, params: next });
+		const clamped = dims ? clampSourceAwareMaxes(stepSchema, next, dims) : next;
+		steps = steps.with(index, { ...step, params: clamped });
 	}
 
 	function resetStep(index: number) {
@@ -249,11 +256,15 @@
 			if (first && firstSchema) {
 				steps = steps.with(0, {
 					...first,
-					params: applySourceDefaults(
+					params: clampSourceAwareMaxes(
 						firstSchema,
-						first.params,
-						{ source: decoded },
-						touchedFor(first.key),
+						applySourceDefaults(
+							firstSchema,
+							first.params,
+							{ source: decoded },
+							touchedFor(first.key),
+						),
+						decoded,
 					),
 				});
 			}
@@ -309,7 +320,7 @@
 					const base = toDisplayError(e);
 					const msg = base.kind === "i18n" ? t(base.key, base.vars) : base.text;
 					throw new Error(
-						t("steps.stepError", {
+						t("toolPage.stepError", {
 							n: i + 1,
 							title: stepTitle(stepTool.id),
 							msg,
@@ -468,6 +479,7 @@
 							schema={toolSchemaOf(step)}
 							values={step.params}
 							toolId={step.id}
+							sourceDims={i === 0 ? (source ?? undefined) : stepDims[i - 1]}
 							onchange={(id, v, axis) => setStepValue(i, id, v, axis)}
 							onreset={() => resetStep(i)}
 						/>
@@ -483,6 +495,7 @@
 					toolId={lastTool.id}
 					{source}
 					{result}
+					{resultNote}
 					{fileResult}
 					{textSource}
 					{textResult}
diff --git a/web/src/lib/components/schema/schema-preview-model.test.ts b/web/src/lib/components/schema/schema-preview-model.test.ts
index 36ce5e5..ad0a370 100644
--- a/web/src/lib/components/schema/schema-preview-model.test.ts
+++ b/web/src/lib/components/schema/schema-preview-model.test.ts
@@ -1,107 +1,47 @@
 import { describe, expect, it } from "vitest";
-import { makeImage } from "../../core/test-helpers";
 import {
-	buildSchemaPreviewModel,
-	type PreviewTranslate,
+	hasPreviewResult,
+	type SchemaPreviewModelInput,
 } from "./schema-preview-model";
 
-const image = makeImage(2, 3, [
-	[1, 2, 3, 255],
-	[4, 5, 6, 255],
-	[7, 8, 9, 255],
-	[10, 11, 12, 255],
-	[13, 14, 15, 255],
-	[16, 17, 18, 255],
-]);
+const image = { width: 2, height: 3, data: new Uint8ClampedArray(24) };
 
-const translate: PreviewTranslate = (key) => {
-	if (key === "resultCard.parts") return "parts";
-	if (key === "textInput.heading") return "Text";
-	return key;
-};
-
-function input(
-	overrides: Partial<Parameters<typeof buildSchemaPreviewModel>[0]> = {},
-) {
+function input(over: Partial<SchemaPreviewModelInput> = {}) {
 	return {
-		inputMode: "image" as const,
-		resultKind: "image" as const,
-		source: null,
+		inputMode: "image",
+		resultKind: "image",
 		result: null,
 		fileResult: null,
 		textResult: null,
-		...overrides,
-	};
+		...over,
+	} satisfies SchemaPreviewModelInput;
 }
 
-describe("buildSchemaPreviewModel", () => {
-	it("formats source values for every input mode", () => {
-		expect(
-			buildSchemaPreviewModel(input({ inputMode: "none" }), translate),
-		).toMatchObject({ sourceValue: "—" });
-		expect(
-			buildSchemaPreviewModel(input({ inputMode: "text" }), translate),
-		).toMatchObject({ sourceValue: "Text" });
-		expect(
-			buildSchemaPreviewModel(
-				input({ inputMode: "image", source: image }),
-				translate,
-			),
-		).toMatchObject({ sourceValue: "2 × 3 px" });
+describe("hasPreviewResult", () => {
+	it("image: результат только при наличии картинки", () => {
+		expect(hasPreviewResult(input({ result: image }))).toBe(true);
+		expect(hasPreviewResult(input())).toBe(false);
 	});
 
-	it("formats image results and enables download only with a result", () => {
-		expect(
-			buildSchemaPreviewModel(input({ result: image }), translate),
-		).toEqual({
-			sourceValue: "—",
-			resultValue: "2 × 3 px",
-			hasResult: true,
-		});
-		expect(buildSchemaPreviewModel(input(), translate)).toMatchObject({
-			resultValue: "—",
-			hasResult: false,
-		});
-	});
-
-	it("formats file results as ZIP and rejects empty file results", () => {
+	it("files: результат только при непустом наборе", () => {
 		const fileResult = { files: [{ name: "part.png", image }] };
+		expect(hasPreviewResult(input({ resultKind: "files", fileResult }))).toBe(
+			true,
+		);
 		expect(
-			buildSchemaPreviewModel(
-				input({ resultKind: "files", fileResult }),
-				translate,
-			),
-		).toEqual({
-			sourceValue: "—",
-			resultValue: "1 parts",
-			hasResult: true,
-		});
-		expect(
-			buildSchemaPreviewModel(
+			hasPreviewResult(
 				input({ resultKind: "files", fileResult: { files: [] } }),
-				translate,
 			),
-		).toMatchObject({ resultValue: "—", hasResult: false });
+		).toBe(false);
 	});
 
 	it.each(["text", "verdict"] as const)(
-		"uses text result presence for %s output",
+		"%s: результат по наличию текста",
 		(resultKind) => {
-			expect(
-				buildSchemaPreviewModel(
-					input({ resultKind, textResult: "done" }),
-					translate,
-				),
-			).toMatchObject({
-				resultValue: "Text",
-				hasResult: true,
-			});
-			expect(
-				buildSchemaPreviewModel(input({ resultKind }), translate),
-			).toMatchObject({
-				resultValue: "—",
-				hasResult: false,
-			});
+			expect(hasPreviewResult(input({ resultKind, textResult: "done" }))).toBe(
+				true,
+			);
+			expect(hasPreviewResult(input({ resultKind }))).toBe(false);
 		},
 	);
 });
diff --git a/web/src/lib/components/schema/schema-preview-model.ts b/web/src/lib/components/schema/schema-preview-model.ts
index 42a987e..930afef 100644
--- a/web/src/lib/components/schema/schema-preview-model.ts
+++ b/web/src/lib/components/schema/schema-preview-model.ts
@@ -1,58 +1,20 @@
 import type { PixelImage } from "$lib/core/types";
 import type { FileResult, InputMode, ResultKind } from "$lib/registry";
 
-export type PreviewTranslate = (key: string) => string;
-
 export type SchemaPreviewModelInput = {
 	inputMode: InputMode;
 	resultKind: ResultKind;
-	source: PixelImage | null;
 	result: PixelImage | null;
 	fileResult: FileResult | null;
 	textResult: string | null;
 };
 
-export type SchemaPreviewModel = {
-	sourceValue: string;
-	resultValue: string;
-	hasResult: boolean;
-};
-
-export function buildSchemaPreviewModel(
-	input: SchemaPreviewModelInput,
-	translate: PreviewTranslate,
-): SchemaPreviewModel {
-	const { inputMode, resultKind, source, result, fileResult, textResult } =
-		input;
-	const sourceValue =
-		inputMode === "none"
-			? "—"
-			: inputMode === "text"
-				? translate("textInput.heading")
-				: source
-					? `${source.width} × ${source.height} px`
-					: "—";
-	const hasFiles = Boolean(fileResult && fileResult.files.length > 0);
-	const resultValue =
-		resultKind === "image"
-			? result
-				? `${result.width} × ${result.height} px`
-				: "—"
-			: resultKind === "files"
-				? hasFiles
-					? `${fileResult?.files.length} ${translate("resultCard.parts")}`
-					: "—"
-				: textResult
-					? translate("textInput.heading")
-					: "—";
-	return {
-		sourceValue,
-		resultValue,
-		hasResult:
-			resultKind === "image"
-				? Boolean(result)
-				: resultKind === "files"
-					? hasFiles
-					: Boolean(textResult),
-	};
+/** Можно ли скачать результат: он есть и он не пустой. */
+export function hasPreviewResult(input: SchemaPreviewModelInput): boolean {
+	const { resultKind, result, fileResult, textResult } = input;
+	if (resultKind === "image") return Boolean(result);
+	if (resultKind === "files") {
+		return Boolean(fileResult && fileResult.files.length > 0);
+	}
+	return Boolean(textResult);
 }
diff --git a/web/src/lib/components/ui/Badge.svelte b/web/src/lib/components/ui/Badge.svelte
index 4d97d72..9cb35b4 100644
--- a/web/src/lib/components/ui/Badge.svelte
+++ b/web/src/lib/components/ui/Badge.svelte
@@ -61,7 +61,7 @@
 		display: flex;
 		align-items: center;
 		gap: var(--space-s);
-		line-height: normal;
+		line-height: 1;
 		font-family: var(--font-mono);
 		font-size: var(--font-size-s);
 		font-weight: bold;
diff --git a/web/src/lib/i18n/en.ts b/web/src/lib/i18n/en.ts
index ab157e7..94e4651 100644
--- a/web/src/lib/i18n/en.ts
+++ b/web/src/lib/i18n/en.ts
@@ -76,6 +76,9 @@ export const en: Dict = {
 		result: "Result",
 		previewPanel: "Preview",
 		parts: "parts",
+		clamped: "clamped to image bounds",
+		aspectAdjusted: "size adjusted to keep aspect",
+		grown: "grew beyond requested size — image is larger",
 		alt: "Result image",
 	},
 	paramsCard: {
@@ -174,7 +177,8 @@ export const en: Dict = {
 		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",
+		cropBounds:
+			"Crop area doesn't fit: offset plus size exceeds the image bounds",
 		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",
@@ -197,9 +201,9 @@ export const en: Dict = {
 		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",
+		cropSize: "Crop width and height must be at least 1 px",
 		sizePositive: "Dimensions must be positive and finite",
-		tooManyParts: "Too many parts ({count}). Maximum is 1000.",
+		tooManyParts: "Too many parts ({count}). The limit is {max}.",
 		pageUnknown: 'No page is registered under "{slug}".',
 	},
 	fields: {
diff --git a/web/src/lib/i18n/ru.ts b/web/src/lib/i18n/ru.ts
index df2e0b5..420432e 100644
--- a/web/src/lib/i18n/ru.ts
+++ b/web/src/lib/i18n/ru.ts
@@ -77,6 +77,9 @@ export const ru: Dict = {
 		result: "Результат",
 		previewPanel: "Предпросмотр",
 		parts: "частей",
+		clamped: "уменьшено до границ изображения",
+		aspectAdjusted: "размер скорректирован по пропорциям",
+		grown: "больше запрошенного — картинка крупнее",
 		alt: "Изображение-результат",
 	},
 	paramsCard: {
@@ -175,7 +178,8 @@ export const ru: Dict = {
 		radiusInt: "Радиус должен быть целым неотрицательным числом",
 		kernelSize: "Ядро не совпадает с изображением по размеру",
 		sizeInt: "Ширина и высота должны быть целыми числами ≥ 1",
-		cropBounds: "Область обрезки не пересекает изображение",
+		cropBounds:
+			"Область не помещается: смещение + размер превышают границы изображения",
 		noCanvasCtx: "Canvas 2D context недоступен в этом окружении",
 		badBase64: "Ожидается base64-строка или data-uri изображения",
 		qualityRange: "quality должно быть в диапазоне 0..1",
@@ -198,9 +202,9 @@ export const ru: Dict = {
 		paramString: 'Параметр "{id}" должен быть строкой',
 		paramBool: 'Параметр "{id}" должен быть значением флажка',
 		resizeSize: "Ширина и/или высота должны быть положительными",
-		cropSize: "Ширина и высота области обрезки должны быть положительными",
+		cropSize: "Ширина и высота области должны быть не меньше 1 px",
 		sizePositive: "Размеры должны быть положительными и конечными",
-		tooManyParts: "Слишком много частей ({count}). Ограничение — 1000.",
+		tooManyParts: "Слишком много частей ({count}). Ограничение — {max}.",
 		pageUnknown: "Страницы «{slug}» нет в каталоге.",
 	},
 	fields: {
diff --git a/web/src/lib/registry-schema.test.ts b/web/src/lib/registry-schema.test.ts
index 570674e..265cea4 100644
--- a/web/src/lib/registry-schema.test.ts
+++ b/web/src/lib/registry-schema.test.ts
@@ -1,6 +1,7 @@
 import { describe, expect, it } from "vitest";
 import {
 	applySourceDefaults,
+	clampSourceAwareMaxes,
 	defaultSchemaParams,
 	field,
 	resolveLayoutGroups,
@@ -89,6 +90,64 @@ describe("registry-schema: withAspectLock", () => {
 	});
 });
 
+describe("registry-schema: maxFromSource", () => {
+	const cropLike = toolSchema<{
+		x: number;
+		size: Dimension;
+	}>({
+		x: field.number({ min: 0, max: 20000, default: 0, maxFromSource: "width" }),
+		size: field.dimension({
+			min: 1,
+			max: 20000,
+			width: 1,
+			height: 1,
+			maxFromSource: true,
+		}),
+	});
+	const img = { width: 832, height: 1216 };
+
+	it("number клампится к размеру исходника, а не к статическому max", () => {
+		const s = sanitizeSchemaParams(cropLike, { x: 5000 }, { source: img });
+		expect(s.x).toBe(832);
+	});
+
+	it("dimension клампится по осям исходника", () => {
+		const s = sanitizeSchemaParams(
+			cropLike,
+			{ size: { width: 5000, height: 5000 } },
+			{ source: img },
+		);
+		expect(s.size).toEqual({ width: 832, height: 1216 });
+	});
+
+	it("без исходника — статический max", () => {
+		const s = sanitizeSchemaParams(cropLike, {
+			x: 5000,
+			size: { width: 5000, height: 5000 },
+		});
+		expect(s.x).toBe(5000);
+		expect(s.size).toEqual({ width: 5000, height: 5000 });
+	});
+
+	it("maxMinus: потолок = исходник − константа (offset до size−1)", () => {
+		const offsetLike = toolSchema<{ x: number }>({
+			x: field.number({
+				min: 0,
+				max: 20000,
+				default: 0,
+				maxFromSource: "width",
+				maxMinus: 1,
+			}),
+		});
+		const s = sanitizeSchemaParams(
+			offsetLike,
+			{ x: 5000 },
+			{ source: { width: 832, height: 1216 } },
+		);
+		expect(s.x).toBe(831);
+	});
+});
+
 describe("registry-schema: source-aware dimension defaults", () => {
 	it("uses static fallback before a source exists", () => {
 		expect(defaultSchemaParams(sourceSchema)).toEqual({
diff --git a/web/src/lib/registry-schema.ts b/web/src/lib/registry-schema.ts
index a05585e..ad9274c 100644
--- a/web/src/lib/registry-schema.ts
+++ b/web/src/lib/registry-schema.ts
@@ -24,6 +24,9 @@ export interface NumberSpec extends FieldSpecBase {
 	min?: number;
 	max?: number;
 	step?: number;
+	/** Потолок из размеров исходника (ось); статический max — фолбэк. */
+	maxFromSource?: "width" | "height";
+	maxMinus?: number;
 }
 
 export interface SliderSpec extends FieldSpecBase {
@@ -73,10 +76,9 @@ export interface DimensionSpec extends FieldSpecBase {
 	width: number;
 	height: number;
 	defaultFromSource?: boolean;
-	/**
-	 * Id checkbox-поля «сохранять пропорции»: пока оно включено, правка одной
-	 * оси пересчитывает вторую по аспекту текущего исходника.
-	 */
+	/** Потолок каждой оси из соответствующего размера исходника. */
+	maxFromSource?: boolean;
+	/** Id checkbox-поля «сохранять пропорции». */
 	lockAspectWith?: string;
 	/** Показывать чипы быстрого выбора из SIZE_PRESETS. */
 	presets?: boolean;
@@ -286,6 +288,7 @@ export const field = {
 		width: number;
 		height: number;
 		defaultFromSource?: boolean;
+		maxFromSource?: boolean;
 		lockAspectWith?: string;
 		presets?: boolean;
 	}): Field<Dimension> => ({
@@ -394,6 +397,68 @@ function clamp(value: number, min?: number, max?: number): number {
 	return value;
 }
 
+/** Потолок поля: из размеров исходника при maxFromSource, иначе статический. */
+export function effectiveMax(
+	spec: NumberSpec,
+	source?: Dimension,
+): number | undefined {
+	if (spec.maxFromSource && source) {
+		return source[spec.maxFromSource] - (spec.maxMinus ?? 0);
+	}
+	return spec.max;
+}
+
+function dimensionAxisMax(
+	spec: DimensionSpec,
+	axis: "width" | "height",
+	source?: Dimension,
+): number {
+	return spec.maxFromSource && source ? source[axis] : spec.max;
+}
+
+/** Поджимает maxFromSource-поля к актуальному потолку (сменился исходник). */
+export function clampSourceAwareMaxes<P>(
+	schema: ToolSchema<P>,
+	params: Record<string, unknown>,
+	source?: Dimension,
+): Record<string, unknown> {
+	if (!source) return params;
+	let changed = false;
+	const out = { ...params };
+	for (const key of Object.keys(schema.fields) as (keyof P)[]) {
+		const spec = schema.fields[key].spec;
+		if (spec.kind === "number" && spec.maxFromSource) {
+			const v = out[key as string];
+			if (typeof v !== "number" || !Number.isFinite(v)) continue;
+			const clamped = clamp(v, spec.min, effectiveMax(spec, source));
+			if (clamped !== v) {
+				out[key as string] = clamped;
+				changed = true;
+			}
+		} else if (spec.kind === "dimension" && spec.maxFromSource) {
+			const v = out[key as string] as Partial<Dimension> | undefined;
+			if (typeof v?.width !== "number" || typeof v?.height !== "number") {
+				continue;
+			}
+			const width = clamp(
+				v.width,
+				spec.min,
+				dimensionAxisMax(spec, "width", source),
+			);
+			const height = clamp(
+				v.height,
+				spec.min,
+				dimensionAxisMax(spec, "height", source),
+			);
+			if (width !== v.width || height !== v.height) {
+				out[key as string] = { width, height };
+				changed = true;
+			}
+		}
+	}
+	return changed ? out : params;
+}
+
 /**
  * Пересчёт при включённом lockAspect: ведущая ось (последняя правка
  * пользователя) сохраняется, вторая подгоняется под аспект исходника.
@@ -500,7 +565,11 @@ export function sanitizeSchemaParams<P>(
 			case "slider": {
 				const n =
 					typeof raw === "number" && Number.isFinite(raw) ? raw : spec.default;
-				out[key] = clamp(n, spec.min, spec.max);
+				const max =
+					spec.kind === "number"
+						? effectiveMax(spec, context?.source)
+						: spec.max;
+				out[key] = clamp(n, spec.min, max);
 				break;
 			}
 			case "select":
@@ -543,8 +612,16 @@ export function sanitizeSchemaParams<P>(
 						? defaults
 						: { width: w, height: h };
 				out[key] = {
-					width: clamp(sourceSize.width, spec.min, spec.max),
-					height: clamp(sourceSize.height, spec.min, spec.max),
+					width: clamp(
+						sourceSize.width,
+						spec.min,
+						dimensionAxisMax(spec, "width", context?.source),
+					),
+					height: clamp(
+						sourceSize.height,
+						spec.min,
+						dimensionAxisMax(spec, "height", context?.source),
+					),
 				};
 				break;
 			}
diff --git a/web/src/lib/registry/index.ts b/web/src/lib/registry/index.ts
index 526ed03..a1226f1 100644
--- a/web/src/lib/registry/index.ts
+++ b/web/src/lib/registry/index.ts
@@ -31,6 +31,7 @@ export type {
 	Page,
 	PageStep,
 	ResultKind,
+	ResultNote,
 	Tool,
 	ToolContext,
 	ToolImageFile,
diff --git a/web/src/lib/registry/registry.test.ts b/web/src/lib/registry/registry.test.ts
index 661551d..d3b4663 100644
--- a/web/src/lib/registry/registry.test.ts
+++ b/web/src/lib/registry/registry.test.ts
@@ -346,6 +346,53 @@ describe("registry-new (переведённые инструменты)", () =>
 		expect(out.data[3]).toBe(0);
 	});
 
+	it("crop: resultNote предупреждает, когда результат ужался по границам", () => {
+		const tool = TOOLS.find((t) => t.id === "crop")!;
+		expect(
+			tool.resultNote?.(
+				{ x: 700, y: 0, size: { width: 256, height: 256 } },
+				solid(132, 256),
+			),
+		).toEqual({ key: "resultCard.clamped" });
+		expect(
+			tool.resultNote?.(
+				{ x: 0, y: 0, size: { width: 256, height: 256 } },
+				solid(256, 256),
+			),
+		).toBeNull();
+	});
+
+	it("resize: resultNote при keepAspect и скорректированной стороне", () => {
+		const tool = TOOLS.find((t) => t.id === "resize")!;
+		const p = { size: { width: 500, height: 300 }, keepAspect: true };
+		expect(tool.resultNote?.(p, solid(300, 300))).toEqual({
+			key: "resultCard.aspectAdjusted",
+			tone: "info",
+		});
+		expect(tool.resultNote?.(p, solid(500, 300))).toBeNull();
+		// без keepAspect результат всегда как запрошено
+		expect(
+			tool.resultNote?.(
+				{ size: { width: 500, height: 300 }, keepAspect: false },
+				solid(500, 300),
+			),
+		).toBeNull();
+	});
+
+	it("fit-on-background: resultNote, когда картинка крупнее канваса", () => {
+		const tool = TOOLS.find((t) => t.id === "fit-on-background")!;
+		const p = {
+			size: { width: 100, height: 100 },
+			opacity: 100,
+			color: "#ffffff",
+		};
+		expect(tool.resultNote?.(p, solid(200, 100))).toEqual({
+			key: "resultCard.grown",
+			tone: "info",
+		});
+		expect(tool.resultNote?.(p, solid(100, 100))).toBeNull();
+	});
+
 	it("change-canvas-size использует anchor для позиции", async () => {
 		const tool = TOOLS.find((t) => t.id === "change-canvas-size")!;
 		const img = solid(10, 10);
diff --git a/web/src/lib/registry/tools/geometry.ts b/web/src/lib/registry/tools/geometry.ts
index 926ee35..5665792 100644
--- a/web/src/lib/registry/tools/geometry.ts
+++ b/web/src/lib/registry/tools/geometry.ts
@@ -120,6 +120,11 @@ const fitOnBackground: Tool<FitOnBackgroundParams> = {
 			Math.round((Math.trunc(p.opacity) / 100) * 255),
 		);
 	}),
+	resultNote: (p, result) =>
+		result.width !== Math.trunc(p.size.width) ||
+		result.height !== Math.trunc(p.size.height)
+			? { key: "resultCard.grown", tone: "info" }
+			: null,
 };
 
 interface ChangeCanvasSizeParams {
@@ -230,6 +235,12 @@ const resizeTool: Tool<ResizeParams> = {
 		}
 		return resize(img, w, h);
 	}),
+	resultNote: (p, result) =>
+		p.keepAspect &&
+		(result.width !== Math.trunc(p.size.width) ||
+			result.height !== Math.trunc(p.size.height))
+			? { key: "resultCard.aspectAdjusted", tone: "info" }
+			: null,
 };
 
 interface CropParams {
@@ -243,24 +254,29 @@ export const cropSchema = toolSchema<CropParams>(
 		x: field.number({
 			label: "fields.x",
 			min: 0,
-			max: 2000,
+			max: 20000,
 			step: 1,
 			default: 0,
+			maxFromSource: "width",
+			maxMinus: 1,
 		}),
 		y: field.number({
 			label: "fields.y",
 			min: 0,
-			max: 1200,
+			max: 20000,
 			step: 1,
 			default: 0,
+			maxFromSource: "height",
+			maxMinus: 1,
 		}),
 		size: field.dimension({
 			label: "fields.cropAreaSize",
 			min: 1,
-			max: 2000,
+			max: 20000,
 			width: 1,
 			height: 1,
 			defaultFromSource: true,
+			maxFromSource: true,
 			presets: true,
 		}),
 	},
@@ -286,6 +302,11 @@ const cropTool: Tool<CropParams> = {
 		}
 		return crop(img, Math.trunc(p.x), Math.trunc(p.y), w, h);
 	}),
+	resultNote: (p, result) =>
+		result.width < Math.trunc(p.size.width) ||
+		result.height < Math.trunc(p.size.height)
+			? { key: "resultCard.clamped" }
+			: null,
 };
 
 interface RotateParams {
@@ -449,7 +470,10 @@ const splitPartsTool: Tool<SplitPartsParams> = {
 		const rowsCount = Math.max(1, Math.trunc(params.rows));
 		const count = cols * rowsCount;
 		if (count > MAX_SPLIT_PARTS) {
-			throw new ToolError("errors.tooManyParts", { count });
+			throw new ToolError("errors.tooManyParts", {
+				count,
+				max: MAX_SPLIT_PARTS,
+			});
 		}
 		const parts = splitToParts(img, cols, rowsCount);
 		const rowLen = String(rowsCount).length;
diff --git a/web/src/lib/registry/types.ts b/web/src/lib/registry/types.ts
index 6cf26fe..e2ad291 100644
--- a/web/src/lib/registry/types.ts
+++ b/web/src/lib/registry/types.ts
@@ -62,6 +62,9 @@ export interface VerdictResult {
 
 export type ToolResult = PixelImage | string | FileResult | VerdictResult;
 
+/** Заметка у тайла результата: i18n-ключ и тон бейджа (warning по умолчанию). */
+export type ResultNote = { key: string; tone?: "warning" | "info" };
+
 /**
  * Инструмент: уникальная реализация без адреса, текстов и категории — всё это
  * у страницы. `id` уникален, но обслуживает сколько угодно страниц, поэтому
@@ -86,6 +89,12 @@ export type Tool<P = Record<string, unknown>> = {
 	domOnly?: boolean;
 	/** Формат/качество скачивания результата; по умолчанию — PNG. */
 	output?: OutputFormat;
+	/**
+	 * Заметка у тайла результата, когда итог отличается от запрошенного:
+	 * ужат по границам (crop), скорректирован по пропорциям (resize),
+	 * вырос за канвас (fit-on-background).
+	 */
+	resultNote?: (params: P, result: PixelImage) => ResultNote | null;
 };
 
 /** Шаг страницы: инструмент и зафиксированные под него значения параметров. */