Enhance smoking tracking API and documentation

- Updated the main.go file to set the local time zone to Asia/Shanghai.
- Changed API endpoints from `PUT` to `POST` for user profile and logs management in multiple documentation files to reflect the correct usage.
- Added new fields in the API response for home summary, including `last_smoke_at`, `today_count`, `resisted_count`, and `reduced_from_yesterday`.
- Enhanced documentation across various files to accurately describe the updated API endpoints and their expected behaviors.

docs/smoke/UI.md

@@ -124,7 +124,7 @@ API：
 展示：
 - smoke_time、smoke_at、remark、level、num
 编辑：
-- `PUT /api/v1/smoke/logs/:id`（支持清空 smoke_at/smoke_time 传空字符串）
+- `POST /api/v1/smoke/logs/:id`（支持清空 smoke_at/smoke_time 传空字符串）
 删除：
 - `DELETE /api/v1/smoke/logs/:id`
 
@@ -166,7 +166,7 @@ API：
 
 API：
 - `GET /api/v1/smoke/profile`
-- `PUT /api/v1/smoke/profile`
+- `POST /api/v1/smoke/profile`
 
 ## 4. 关键交互与状态
 
@@ -190,7 +190,7 @@ API：
 ## 5. API 映射速查表
 
 - 登录：`POST /api/v1/auth/login`（返回 session_key）
-- Profile：`GET/PUT /api/v1/smoke/profile`
+- Profile：`GET/POST /api/v1/smoke/profile`
 - 新增抽烟：`POST /api/v1/smoke/logs`
 - 忍住：`POST /api/v1/smoke/logs/resisted`
 - 列表：`GET /api/v1/smoke/logs`、`GET /api/v1/smoke/logs/latest`
@@ -198,4 +198,3 @@ API：
 - 下次时间：`GET /api/v1/smoke/next_smoke_time?date=&mode=`
 - 每日 AI 建议：`GET /api/v1/smoke/ai/advice?date=`
 - 广告解锁：`POST /api/v1/smoke/ai/advice_unlocks {date}`
-