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.

cmd/server/wire.go

@@ -1,4 +1,4 @@
-//go:build wireinject
+//go:build wireinject
 // +build wireinject
 
 package main
@@ -32,7 +32,7 @@ func ProvideRouter(
 	messageHandler *handler.MessageHandler,
 	notificationHandler *handler.NotificationHandler,
 	uploadHandler *handler.UploadHandler,
-	jwtService *service.JWTService,
+	jwtService service.JWTService,
 	pushHandler *handler.PushHandler,
 	systemMessageHandler *handler.SystemMessageHandler,
 	groupHandler *handler.GroupHandler,
@@ -63,6 +63,7 @@ func ProvideRouter(
 	logService *service.LogService,
 	activityService service.UserActivityService,
 	casbinService service.CasbinService,
+	userService service.UserService,
 	wsHandler *handler.WSHandler,
 	liveKitHandler *handler.LiveKitHandler,
 ) *router.Router {
@@ -95,7 +96,7 @@ func ProvideRouter(
 		QRCodeHandler:            qrcodeHandler,
 		MaterialHandler:          materialHandler,
 		CallHandler:              callHandler,
-			LiveKitHandler:           liveKitHandler,
+		LiveKitHandler:           liveKitHandler,
 		ReportHandler:            reportHandler,
 		AdminReportHandler:       adminReportHandler,
 		VerificationHandler:      verificationHandler,
@@ -106,6 +107,7 @@ func ProvideRouter(
 		LogService:               logService,
 		ActivityService:          activityService,
 		CasbinService:            casbinService,
+		UserService:              userService,
 		WSHandler:                wsHandler,
 	})
 }