refactor(server): decouple services and improve architecture

- Introduce interfaces for all major services (JWT, PostAI, Comment, Message, Notification, QRCodeLogin, Upload, Vote, etc.) to support dependency inversion.
- Move query parameters from `internal/dto` to a new `internal/query` package to separate request payloads from data transfer objects.
- Refactor `internal/router` to use embedded `RouterDeps` for cleaner dependency management.
- Decouple handlers from repositories by injecting services instead of direct repository access, ensuring proper layering.
- Improve database initialization by moving it from `internal/model` to `internal/database`.
- Optimize message decryption by implementing a more efficient `BatchDecrypt` method in `MessageEncryptor` using a worker pool.
- Enhance error handling and security by implementing fail-fast checks for encryption key length during startup.
- Clean up unused code, including the `avatar` package and several unused DTOs.

internal/service/push_worker.go

@@ -38,14 +38,14 @@ type PushStreamMsg struct {
 
 // PushWorker 从 Redis Stream 消费消息并异步推送
 type PushWorker struct {
-	rdb        *redis.Client
-	publisher  ws.MessagePublisher
-	pushSvc    PushService
-	msgRepo    repository.MessageRepository
-	userRepo   repository.UserRepository
-	config     PushWorkerConfig
-	stopCh     chan struct{}
-	doneCh     chan struct{}
+	rdb       *redis.Client
+	publisher ws.MessagePublisher
+	pushSvc   PushService
+	msgRepo   repository.MessageRepository
+	userRepo  repository.UserRepository
+	config    PushWorkerConfig
+	stopCh    chan struct{}
+	doneCh    chan struct{}
 }
 
 // NewPushWorker 创建推送 Worker
@@ -79,14 +79,14 @@ func NewPushWorker(
 		config.IdleTimeoutMs = 30000
 	}
 	return &PushWorker{
-		rdb:        rdb,
-		publisher:  publisher,
-		pushSvc:    pushSvc,
-		msgRepo:    msgRepo,
-		userRepo:   userRepo,
-		config:     config,
-		stopCh:     make(chan struct{}),
-		doneCh:     make(chan struct{}),
+		rdb:       rdb,
+		publisher: publisher,
+		pushSvc:   pushSvc,
+		msgRepo:   msgRepo,
+		userRepo:  userRepo,
+		config:    config,
+		stopCh:    make(chan struct{}),
+		doneCh:    make(chan struct{}),
 	}
 }
 
@@ -191,12 +191,12 @@ func (w *PushWorker) claimPendingLoop() {
 
 		// 查询 pending 消息
 		pendingResult, err := w.rdb.XPendingExt(context.Background(), &redis.XPendingExtArgs{
-			Stream:   w.config.Stream,
-			Group:    w.config.Group,
-			Start:    "-",
-			End:      "+",
-			Count:    int64(w.config.BatchSize),
-			Idle:     time.Duration(w.config.IdleTimeoutMs) * time.Millisecond,
+			Stream: w.config.Stream,
+			Group:  w.config.Group,
+			Start:  "-",
+			End:    "+",
+			Count:  int64(w.config.BatchSize),
+			Idle:   time.Duration(w.config.IdleTimeoutMs) * time.Millisecond,
 		}).Result()
 		if err != nil {
 			if err == redis.Nil {
@@ -213,7 +213,7 @@ func (w *PushWorker) claimPendingLoop() {
 				Group:    w.config.Group,
 				Consumer: consumerName,
 				MinIdle:  time.Duration(w.config.IdleTimeoutMs) * time.Millisecond,
-				Messages:      []string{pending.ID},
+				Messages: []string{pending.ID},
 			}).Result()
 			if err != nil || len(claimed) == 0 {
 				continue
@@ -378,4 +378,4 @@ func PublishToPush(ctx context.Context, rdb *redis.Client, stream string, msg *P
 			"data": string(data),
 		},
 	}).Err()
-}
+}