feat: Tauri v2 release workflow and frontend API migration

- Update release workflow with matrix strategy for Linux/macOS/Windows
- Upgrade @tauri-apps/api from v1 to v2 in frontend
- Change all tauri/tauri imports to tauri/core (Tauri v2)
- Sync tauri.conf.json across project root and src-tauri

client/src-ui/package.json

@@ -11,7 +11,7 @@
   },
   "devDependencies": {
     "@sveltejs/vite-plugin-svelte": "^3",
-    "@tauri-apps/api": "^1",
+    "@tauri-apps/api": "^2.10.1",
     "svelte": "^4",
     "svelte-check": "^3",
     "svelte-preprocess": "^5.1.4",