chore(deps): refresh packages and bundled engines

- update React DOM types and compatible Rust lock dependencies
- refresh Windows and Linux FFmpeg source URLs and checksums
- cover aria2 asset hashes and Windows npm command execution
- verify Firelink and Companion across tests, builds, and engine payloads

package.json

@@ -69,7 +69,7 @@
   "devDependencies": {
     "@tauri-apps/cli": "^2.11.4",
     "@types/react": "^19.2.18",
-    "@types/react-dom": "^19.2.4",
+    "@types/react-dom": "^19.2.5",
     "@vitejs/plugin-react": "^6.1.0",
     "autoprefixer": "^10.5.4",
     "postcss": "^8.5.26",