refactor: update repository interfaces and improve dependency injection

- Refactored repository structures to use interfaces instead of concrete types, enhancing flexibility and testability.
- Updated various repository methods to accept interfaces, allowing for better dependency management.
- Modified wire generation to accommodate new repository interfaces, ensuring proper service injection throughout the application.
- Enhanced handler methods to utilize DTOs for filtering and data handling, improving code clarity and maintainability.

internal/service/hot_rank_worker.go

@@ -19,7 +19,7 @@ import (
 // HotRankWorker 定时在候选池上重算热门分，写入 Redis ZSET（仅 TopN）及 top_ids（Redis+本地缓存）
 type HotRankWorker struct {
 	cfg      *config.Config
-	postRepo *repository.PostRepository
+	postRepo repository.PostRepository
 	c        cache.Cache
 	mu       sync.Mutex
 	stopOnce sync.Once
@@ -28,7 +28,7 @@ type HotRankWorker struct {
 }
 
 // NewHotRankWorker 创建热门榜重算 worker（cache 需为 Redis 实现才有意义）
-func NewHotRankWorker(cfg *config.Config, postRepo *repository.PostRepository, c cache.Cache) *HotRankWorker {
+func NewHotRankWorker(cfg *config.Config, postRepo repository.PostRepository, c cache.Cache) *HotRankWorker {
 	return &HotRankWorker{
 		cfg:      cfg,
 		postRepo: postRepo,