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.

internal/routes/smoke_routes.go

@@ -12,7 +12,7 @@ func registerSmokeRoutes(protected *gin.RouterGroup, smokeHandler *smokehandler.
 	{
 		// 首次进入/基础信息（用于基准、AI 个性化、作息规避等）
 		smoke.GET("/profile", smokeHandler.GetProfile)
-		smoke.PUT("/profile", smokeHandler.UpsertProfile)
+		smoke.POST("/profile", smokeHandler.UpsertProfile)
 
 		// 不使用 AI 时的默认“下次抽烟时间”建议（阶梯式延时）
 		smoke.GET("/next_smoke_time", smokeHandler.GetNextSmokeTime)
@@ -23,7 +23,7 @@ func registerSmokeRoutes(protected *gin.RouterGroup, smokeHandler *smokehandler.
 		smoke.GET("/logs", smokeHandler.List)
 		smoke.GET("/logs/latest", smokeHandler.LatestLogs)
 		smoke.GET("/logs/:id", smokeHandler.Get)
-		smoke.PUT("/logs/:id", smokeHandler.Update)
+		smoke.POST("/logs/:id", smokeHandler.Update)
 		smoke.DELETE("/logs/:id", smokeHandler.Delete)
 
 		// AI 戒烟建议（会员优先；非会员需看广告解锁）