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/SEQUENCE.md

@@ -37,7 +37,7 @@ sequenceDiagram
   API->>DB: 查询 fa_smoke_user_profile(uid)
   API-->>MP: exists/is_completed/baseline_interval_minutes/作息等
   alt 需要补全
-    MP->>API: PUT /api/v1/smoke/profile {...基础烟量/动机/动力/作息...}
+    MP->>API: POST /api/v1/smoke/profile {...基础烟量/动机/动力/作息...}
     API->>DB: upsert fa_smoke_user_profile(uid)
     API-->>MP: 返回最新 profile + baseline_interval_minutes
   end
@@ -141,4 +141,3 @@ sequenceDiagram
     end
   end
 ```
-