refactor: remove Gorse integration and implement HotRank feature

- Removed Gorse-related configurations, handlers, and dependencies from the codebase.
- Introduced HotRank feature with configuration options for ranking posts based on recent activity.
- Updated application structure to support HotRank processing, including new caching mechanisms and database interactions.
- Cleaned up related DTOs and repository methods to reflect the removal of Gorse and the addition of HotRank functionality.

internal/wire/handler.go

@@ -2,14 +2,12 @@ package wire
 
 import (
 	"carrot_bbs/internal/cache"
-	"carrot_bbs/internal/config"
 	"carrot_bbs/internal/handler"
 	"carrot_bbs/internal/pkg/sse"
 	"carrot_bbs/internal/repository"
 	"carrot_bbs/internal/service"
 
 	"github.com/google/wire"
-	"gorm.io/gorm"
 )
 
 // HandlerSet Handler 层 Provider Set
@@ -36,7 +34,6 @@ var HandlerSet = wire.NewSet(
 	ProvideMessageHandler,
 	ProvideSystemMessageHandler,
 	ProvideGroupHandler,
-	ProvideGorseHandler,
 	ProvideScheduleHandler,
 )
 
@@ -115,11 +112,6 @@ func ProvideGroupHandler(
 	return handler.NewGroupHandler(groupService, userService)
 }
 
-// ProvideGorseHandler 提供 Gorse 处理器
-func ProvideGorseHandler(cfg *config.Config, db *gorm.DB) *handler.GorseHandler {
-	return handler.NewGorseHandler(cfg.Gorse, db)
-}
-
 // ProvideScheduleHandler 提供课表处理器
 func ProvideScheduleHandler(
 	scheduleService service.ScheduleService,