Chore: Restructure Repository for SvelteKit

src/lib/state/extensions.svelte.ts

@@ -0,0 +1,36 @@
+import type { Extension, Source, Manga } from '$lib/types'
+
+export const extensionsState = $state({
+  items: [] as Extension[],
+  sources: [] as Source[],
+  loading: false,
+  error: null as string | null,
+
+  filter: {
+    query: '',
+    installed: false,
+    language: 'all',
+  },
+
+  browseResults: [] as Manga[],
+  browseLoading: false,
+  browseError: null as string | null,
+  browseHasMore: false,
+})
+
+export const filteredExtensions = $derived.by(() => {
+  let result = extensionsState.items
+
+  if (extensionsState.filter.installed) {
+    result = result.filter(e => e.installed)
+  }
+  if (extensionsState.filter.language !== 'all') {
+    result = result.filter(e => e.lang === extensionsState.filter.language)
+  }
+  if (extensionsState.filter.query) {
+    const q = extensionsState.filter.query.toLowerCase()
+    result = result.filter(e => e.name.toLowerCase().includes(q))
+  }
+
+  return result
+})