Enhance smoking tracking features with AI next smoke time suggestions

- Added new API endpoint `GET /api/v1/smoke/next_smoke_time` to provide AI-generated suggestions for the next smoking time based on user data.
- Introduced a new database table `fa_smoke_ai_next_smoke` to store structured AI time node suggestions.
- Updated smoke handler and service to integrate the new AI next smoke time functionality.
- Enhanced documentation to reflect the new API endpoint and its usage, including details on how to generate AI time nodes.

internal/routes/smoke_routes.go

@@ -14,8 +14,12 @@ func registerSmokeRoutes(protected *gin.RouterGroup, smokeHandler *smokehandler.
 		smoke.GET("/profile", smokeHandler.GetProfile)
 		smoke.PUT("/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)
+
 		smoke.GET("/dashboard", smokeHandler.Dashboard)
 		smoke.POST("/logs", smokeHandler.Create)
+		smoke.POST("/logs/resisted", smokeHandler.Resist)
 		smoke.GET("/logs", smokeHandler.List)
 		smoke.GET("/logs/latest", smokeHandler.LatestLogs)
 		smoke.GET("/logs/:id", smokeHandler.Get)
@@ -25,5 +29,8 @@ func registerSmokeRoutes(protected *gin.RouterGroup, smokeHandler *smokehandler.
 		// AI 戒烟建议（会员优先；非会员需看广告解锁）
 		smoke.GET("/ai/advice", smokeHandler.GetAIAdvice)
 		smoke.POST("/ai/advice_unlocks", smokeHandler.UnlockAIAdvice)
+
+		// AI 下次抽烟时间建议（结构化时间节点）
+		smoke.GET("/ai/next_smoke_time", smokeHandler.GetAINextSmokeTime)
 	}
 }