init new frontend

frontend/src/lib/utils/legacyHash.ts

@@ -0,0 +1,37 @@
+/**
+ * Translate a legacy hash route (`#/...` from the vanilla app) into the new
+ * SvelteKit path, so old bookmarks and external links keep working.
+ *
+ * Returns the new pathname, or null when the hash isn't a legacy route.
+ */
+export function legacyHashToPath(hash: string): string | null {
+	if (!hash.startsWith('#/')) return null;
+	const raw = hash.slice(1); // drop the '#'
+	const [pathPart] = raw.split('?');
+	const segs = pathPart.split('/').filter(Boolean); // e.g. ['files','folder','<id>']
+
+	if (segs.length === 0 || segs[0] === 'files') {
+		// #/ , #/files , #/files/folder/<id>/<id>...
+		if (segs[1] === 'folder') return `/files/${segs.slice(2).join('/')}`;
+		return '/files';
+	}
+
+	switch (segs[0]) {
+		case 'shared':
+			return '/shared';
+		case 'sharedwithme':
+			return '/shared-with-me';
+		case 'recent':
+			return '/recent';
+		case 'favorites':
+			return '/favorites';
+		case 'trash':
+			return '/trash';
+		case 'photos':
+			return '/photos';
+		case 'music':
+			return '/music';
+		default:
+			return null;
+	}
+}