init new frontend

frontend/svelte.config.js

@@ -0,0 +1,37 @@
+import adapter from '@sveltejs/adapter-static';
+import { vitePreprocess } from '@sveltejs/vite-plugin-svelte';
+
+/**
+ * SvelteKit config — pure SPA via adapter-static.
+ *
+ * Phase 0: output to the local `build/` dir so the existing `static-dist/`
+ * (still produced by build.rs) is untouched. At cutover (Phase 5) the
+ * `pages`/`assets` targets switch to `../static-dist` and build.rs stops
+ * generating assets.
+ *
+ * `fallback: 'index.html'` makes every unmatched client route serve the SPA
+ * shell, which the Rust web layer will mirror with a ServeFile fallback.
+ *
+ * @type {import('@sveltejs/kit').Config}
+ */
+const config = {
+	preprocess: vitePreprocess(),
+	kit: {
+		adapter: adapter({
+			// Cutover: emit the SPA into the repo-root `static-dist/` that the Rust
+			// web layer serves in release. build.rs no longer generates this dir
+			// (gated behind OXICLOUD_LEGACY_ASSETS for rollback).
+			pages: '../static-dist',
+			assets: '../static-dist',
+			fallback: 'index.html',
+			precompress: false,
+			strict: true
+		}),
+		// All routes are client-rendered; SSR/prerender are disabled in +layout.ts.
+		alias: {
+			$lib: './src/lib'
+		}
+	}
+};
+
+export default config;