Enhance smoking tracking API with new features and improvements

- Added a new API endpoint `GET /api/v1/smoke/home` to consolidate core modules for the home dashboard, reducing the need for multiple requests.
- Updated the `smoke` routes to include the new home endpoint and improved user profile management with the addition of a `quit_date` field.
- Enhanced the algorithm for calculating daily targets and next smoke suggestions, ensuring accurate future time handling and user-specific recommendations.
- Improved API documentation to reflect new endpoints, response formats, and detailed field descriptions for better clarity and usability.
- Refactored user authentication handling in various handlers to streamline the process and ensure consistent error responses.

internal/routes/smoke_routes.go

@@ -10,6 +10,8 @@ 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")
 	{
+		smoke.GET("/home", smokeHandler.Home)
+
 		// 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.POST("/profile", smokeHandler.UpsertProfile)