feat: add og description\image\etc

web/src/lib/components/Seo.svelte

@@ -0,0 +1,30 @@
+<script lang="ts">
+	import { SITE_URL } from "$lib/seo";
+
+	interface Props {
+		title: string;
+		description: string;
+		/** Путь страницы от корня роутера ("/", "/list-tools", "/tools/…"). */
+		path: string;
+	}
+	let { title, description, path }: Props = $props();
+
+	const url = $derived(`${SITE_URL}${path}`);
+	const image = `${SITE_URL}/og/default.png`;
+</script>
+
+<svelte:head>
+	<title>{title}</title>
+	<meta name="description" content={description} />
+	<link rel="canonical" href={url} />
+	<meta property="og:type" content="website" />
+	<meta property="og:site_name" content="easy-png-tools" />
+	<meta property="og:title" content={title} />
+	<meta property="og:description" content={description} />
+	<meta property="og:url" content={url} />
+	<meta property="og:image" content={image} />
+	<meta name="twitter:card" content="summary_large_image" />
+	<meta name="twitter:title" content={title} />
+	<meta name="twitter:description" content={description} />
+	<meta name="twitter:image" content={image} />
+</svelte:head>

web/src/lib/seo.ts

@@ -0,0 +1,6 @@
+/**
+ * Публичный URL сайта для canonical/OG (абсолютные URL, включая base-path
+ * GitHub Pages). После покупки домена меняется здесь — `docs/plan-seo.md` §6.
+ * Внимание: `$app/paths.base` для этого не подходит — он относительный.
+ */
+export const SITE_URL = "https://ku6epxboctuk.github.io/easy-png-tools";

web/src/routes/+page.svelte

@@ -4,6 +4,7 @@
 	import CatalogHeader from "$lib/components/catalog/CatalogHeader.svelte";
 	import CatalogToolbar from "$lib/components/catalog/CatalogToolbar.svelte";
 	import ToolCard from "$lib/components/catalog/ToolCard.svelte";
+	import Seo from "$lib/components/Seo.svelte";
 	import { favFirst, isFav } from "$lib/favorites.svelte";
 	import {
 		pageDescription,
@@ -37,9 +38,7 @@
 	);
 </script>
 
-<svelte:head>
-	<title>{t("home.defaultTitle")}</title>
-</svelte:head>
+<Seo title={t("home.defaultTitle")} description={t("home.heroLead")} path="/" />
 
 <div class="catalog-page">
 	<CatalogHeader total={PREVIEW_TOTAL} />

web/src/routes/list-tools/+page.svelte

@@ -4,6 +4,7 @@
 	import CatalogHeader from "$lib/components/catalog/CatalogHeader.svelte";
 	import CatalogToolbar from "$lib/components/catalog/CatalogToolbar.svelte";
 	import ToolCard from "$lib/components/catalog/ToolCard.svelte";
+	import Seo from "$lib/components/Seo.svelte";
 	import { favFirst, isFav } from "$lib/favorites.svelte";
 	import {
 		pageDescription,
@@ -37,10 +38,11 @@
 	);
 </script>
 
-<svelte:head>
-	<title>{t("catalog.pageTitle")}</title>
-	<meta name="description" content={t("catalog.metaDescription")} />
-</svelte:head>
+<Seo
+	title={t("catalog.pageTitle")}
+	description={t("catalog.metaDescription")}
+	path="/list-tools"
+/>
 
 <div class="catalog-page">
 	<CatalogHeader total={PREVIEW_TOTAL} />

web/src/routes/tools/[slug]/+page.svelte

@@ -1,6 +1,8 @@
 <script lang="ts">
 	import EmptyState from "$lib/components/feedback/EmptyState.svelte";
 	import SchemaToolView from "$lib/components/schema/SchemaToolView.svelte";
+	import Seo from "$lib/components/Seo.svelte";
+	import { pageDescription, pageTitle } from "$lib/i18n/schema-tool-strings";
 	import { t } from "$lib/i18n/t";
 	import { getPageBySlug, getTool } from "$lib/registry";
 	import { SlidersHorizontal as ToolIcon } from "@lucide/svelte";
@@ -14,8 +16,17 @@
 	const tool = $derived(page ? getTool(page.steps[0].id) : undefined);
 </script>
 
+{#if page}
+	<Seo
+		title={`easy-png-tools / ${pageTitle(page)}`}
+		description={pageDescription(page)}
+		path={`/tools/${page.slug}`}
+	/>
+{/if}
 <svelte:head>
-	<title>easy-png-tools / {page?.title ?? t("toolPage.fallbackTitle")}</title>
+	{#if !page}
+		<title>easy-png-tools / {t("toolPage.fallbackTitle")}</title>
+	{/if}
 	<meta name="robots" content="noindex, nofollow" />
 </svelte:head>