feat: restructure as pnpm monorepo with Tauri desktop shell

- Migrate to packages/web + packages/desktop workspace layout via git mv
- Add Tauri v2 desktop shell with @tauri-apps/plugin-http for CORS bypass
- Configure Turborepo with package-level dependsOn build graph
- Add semantic-release with exec plugin for GHA output and disabled PR comments
- Fix http:default capability scope to allow all HTTP/HTTPS origins
- Add Vite Tauri integration (clearScreen, TAURI_DEV_HOST, target, envPrefix)
- Add semantic-release.yml and release.yml GitHub Actions workflows
- Fix all Biome lint errors (noArrayIndexKey, noNonNullAssertion, button types)

packages/web/src/lib/http.ts

@@ -0,0 +1,12 @@
+import { fetch as tauriFetch } from "@tauri-apps/plugin-http";
+
+// Route fetch through Rust (reqwest) when running in Tauri — bypasses WebView CORS enforcement.
+// Falls back to native browser fetch during plain web dev (`pnpm dev:web`).
+const isTauri = Boolean(
+	typeof window !== "undefined" &&
+		(window as unknown as Record<string, unknown>).__TAURI_INTERNALS__,
+);
+
+export const httpFetch: typeof globalThis.fetch = isTauri
+	? (tauriFetch as typeof globalThis.fetch)
+	: globalThis.fetch;