Initial commit: 健康管家 AI 健康陪伴助手

- Backend: .NET 10 Minimal API + EF Core + PostgreSQL
- Frontend: Flutter + Riverpod + GoRouter + Dio
- AI: DeepSeek LLM + Qwen VLM (OpenAI-compatible)
- Auth: SMS + JWT (access/refresh tokens)
- Features: AI chat, health tracking, medication management, diet analysis, exercise plans, doctor consultations, report analysis

backend/.env.example

@@ -0,0 +1,22 @@
+# 数据库
+DB_CONNECTION=Host=localhost;Database=health_manager;Username=postgres;Password=postgres123
+
+# JWT
+JWT_SECRET=your-jwt-secret-min-32-chars
+JWT_ISSUER=health-manager
+JWT_AUDIENCE=health-manager-app
+
+# DeepSeek LLM
+DEEPSEEK_BASE_URL=https://api.deepseek.com/v1
+DEEPSEEK_API_KEY=sk-your-key-here
+DEEPSEEK_MODEL=deepseek-chat
+
+# 千问 VLM
+QWEN_BASE_URL=https://dashscope.aliyuncs.com/compatible-mode/v1
+QWEN_API_KEY=sk-your-key-here
+QWEN_VISION_MODEL=qwen-vl-max
+
+# MinIO
+MINIO_ENDPOINT=localhost:9000
+MINIO_ACCESS_KEY=minioadmin
+MINIO_SECRET_KEY=minioadmin123