CrossRelay stage 0+1: Go gateway with Anthropic<->Chat Completions relay, Tauri shell, bilingual management UI

- Go gateway (stdlib only): /v1/messages non-stream + SSE, /v1/messages/count_tokens,
  management API /api/* (providers CRUD, apply/restore, settings, backups, logs)
- Protocol conversion: Anthropic Messages <-> Chat Completions with a streaming
  state machine keyed by content block index (text, tool_use, parallel calls)
- ~/.claude/settings.json guarded read/write: timestamped backups, managed env
  keys only, one-click restore
- Tauri 2 shell: spawns the gateway sidecar, parses the random port from stdout,
  stdin pipe watchdog prevents orphans, kills the child on exit
- React frontend: Dashboard/Providers/Settings, zh-CN + en-US, TanStack Query
- Tests: Go table-driven + httptest integration (all green), vitest + RTL

package.json

@@ -0,0 +1,46 @@
+{
+  "name": "crossrelay",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc --noEmit && vite build",
+    "preview": "vite preview",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "typecheck": "tsc --noEmit",
+    "tauri": "tauri",
+    "tauri:dev": "tauri dev",
+    "tauri:build": "tauri build"
+  },
+  "dependencies": {
+    "@tanstack/react-query": "^5.62.7",
+    "@tauri-apps/api": "^2.2.0",
+    "@tauri-apps/plugin-http": "^2.2.0",
+    "clsx": "^2.1.1",
+    "i18next": "^24.2.2",
+    "lucide-react": "^0.469.0",
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1",
+    "react-i18next": "^15.1.0",
+    "react-router-dom": "^7.1.1",
+    "tailwind-merge": "^2.6.0"
+  },
+  "devDependencies": {
+    "@tailwindcss/vite": "^4.0.0",
+    "@tauri-apps/cli": "^2.2.0",
+    "@testing-library/jest-dom": "^6.6.3",
+    "@testing-library/react": "^16.1.0",
+    "@testing-library/user-event": "^14.5.2",
+    "@types/node": "^22.10.5",
+    "@types/react": "^18.3.18",
+    "@types/react-dom": "^18.3.5",
+    "@vitejs/plugin-react": "^4.3.4",
+    "jsdom": "^25.0.1",
+    "tailwindcss": "^4.0.0",
+    "typescript": "^5.7.3",
+    "vite": "^6.0.7",
+    "vitest": "^3.2.7"
+  }
+}