feat(kon): scaffold hybrid modular workspace

- Cargo workspace with 6 domain crates: core, audio, transcription, ai-formatting, storage, cloud-providers
- Minimal Tauri shell (lib.rs + main.rs) with plugin registration
- Svelte 5 frontend copied from Ramble v0.2
- All crates compile as empty stubs
- App identifier: uk.co.corbel.kon

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

svelte.config.js

@@ -0,0 +1,12 @@
+import adapter from "@sveltejs/adapter-static";
+
+/** @type {import('@sveltejs/kit').Config} */
+const config = {
+  kit: {
+    adapter: adapter({
+      fallback: "index.html",
+    }),
+  },
+};
+
+export default config;