Add user profile management for smoking data

- Introduced new API endpoints `GET /api/v1/smoke/profile` and `PUT /api/v1/smoke/profile` for retrieving and updating user smoking profiles.
- Added a new database table `fa_smoke_user_profile` to store user-specific smoking data, including daily smoking habits and motivations.
- Updated the smoke handler and service to integrate user profile data into AI advice generation.
- Enhanced documentation to reflect the new user profile features and their usage.

internal/routes/smoke_routes.go

@@ -10,6 +10,10 @@ func registerSmokeRoutes(protected *gin.RouterGroup, smokeHandler *smokehandler.
 	// 戒烟/抽烟记录（与 video 去水印功能在路由前缀上区分开）
 	smoke := protected.Group("/smoke")
 	{
+		// 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.GET("/dashboard", smokeHandler.Dashboard)
 		smoke.POST("/logs", smokeHandler.Create)
 		smoke.GET("/logs", smokeHandler.List)