refactor: 数据层迁往服务端 (Express+DuckDB), APP 变瘦客户端只留缓存

- server: 新增 DuckDB 数据层 (db.js) 与鉴权 (auth.js: 验证码+token), 挂载 /api 业务路由
  (衣物/搭配/日历/统计/MCP), 错误统一中间件
- 前端 src/api/index.ts 全部业务调用改为 HTTP (Bearer token), 客户端不再持有数据库
- 删除 Rust 数据层 (db.rs/auth.rs/mcp.rs/models.rs), Cargo.toml 裁剪 duckdb/chrono 等依赖
- Dockerfile: 基镜像 alpine→slim (@duckdb/node-api glibc 预编译), DB 落 /app/data 卷
- docker-build.yml: 移除 prune --volumes, 挂具名卷 wardrobe-data 持久化
- Landing/Profile 文案改为云端同步口径; 退出登录调服务端会话销毁

src-tauri/Cargo.toml

@@ -14,17 +14,6 @@ tauri = { version = "2", features = ["tray-icon"] }
 tauri-plugin-shell = "2"
 # 前端 OTA 升级 (运行时覆盖 tauri://localhost 资源; 替换 Assets provider)
 tauri-plugin-hotswap = "0.0.4"
-serde = { version = "1", features = ["derive"] }
-serde_json = "1"
-duckdb = { version = "0.10", features = ["bundled"] }
-tokio = { version = "1", features = ["full"] }
-uuid = { version = "1", features = ["v4"] }
-# 版本上限: chrono 0.4.40 起 Datelike 新增 quarter(), 与 arrow-arith 51 的
-# ChronoDateExt::quarter (duckdb 0.10.2 非可选依赖 arrow 51) 产生 E0034 方法歧义
-chrono = { version = ">=0.4.38, <0.4.40", features = ["serde"] }
-sha2 = "0.10"
-hex = "0.4"
-ctrlc = "3"
 log = "0.4"
 env_logger = "0.11"