feat(server): add Vertex AI proxy server and improve product search

.env.example

@@ -0,0 +1,20 @@
+# ===== Connection Mode =====
+# Choose ONE of the following modes:
+
+# Mode 1: Direct API Key (for Google AI Studio)
+# Create your own API KEY at https://aistudio.google.com/apikey
+#REACT_APP_GEMINI_API_KEY=''
+
+# Mode 2: Proxy Mode (for Vertex AI - recommended)
+REACT_APP_PROXY_URL=ws://localhost:8080/api/ws
+
+# ===== Vertex AI Configuration (for backend proxy) =====
+GOOGLE_PROJECT_ID=your-project-id
+GOOGLE_LOCATION=us-central1
+GEMINI_MODEL_ID=gemini-live-2.5-flash-preview-native-audio
+# Use absolute path or path relative to where server is run
+GOOGLE_KEY_FILE=/path/to/your/service-account-key.json
+
+# ===== Server Configuration =====
+PROXY_PORT=8080
+PROXY_HOST=0.0.0.0

.gitignore

@@ -2,6 +2,7 @@
 
 # dependencies
 /node_modules
+/server/node_modules
 /.pnp
 .pnp.js
 
@@ -13,11 +14,24 @@
 
 # misc
 .DS_Store
+.env
 .env.local
 .env.development.local
 .env.test.local
 .env.production.local
 
+# IDE
+.idea/
+.vscode/
+
+# Google Cloud credentials
+*.json
+!package.json
+!package-lock.json
+!tsconfig.json
+!pnpm-lock.yaml
+
 npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
+pnpm-debug.log*

server/package.json

@@ -0,0 +1,20 @@
+{
+  "name": "live-api-proxy-server",
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "bun --env-file=../.env run --watch src/index.ts",
+    "start": "bun run src/index.ts"
+  },
+  "dependencies": {
+    "@fastify/cors": "^11.1.0",
+    "@fastify/websocket": "^11.1.0",
+    "@google/genai": "^1.0.0",
+    "fastify": "^5.2.1"
+  },
+  "devDependencies": {
+    "@types/node": "^22.0.0",
+    "pino-pretty": "^13.1.3",
+    "typescript": "^5.6.3"
+  }
+}