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/wire/service.go

@@ -1,4 +1,4 @@
-package wire
+package wire
 
 import (
 	"time"
@@ -46,9 +46,9 @@ var ServiceSet = wire.NewSet(
 	ProvideChatService,
 	ProvideScheduleService,
 	ProvideScheduleSyncService,
-		ProvideGradeSyncService,
-		ProvideExamSyncService,
-		ProvideEmptyClassroomSyncService,
+	ProvideGradeSyncService,
+	ProvideExamSyncService,
+	ProvideEmptyClassroomSyncService,
 	ProvideGroupService,
 	ProvideUploadService,
 	ProvideUserActivityService,
@@ -87,7 +87,7 @@ var ServiceSet = wire.NewSet(
 )
 
 // ProvideJWTService 提供 JWT 服务
-func ProvideJWTService(cfg *config.Config) *service.JWTService {
+func ProvideJWTService(cfg *config.Config) service.JWTService {
 	return service.NewJWTService(
 		cfg.JWT.Secret,
 		int64(cfg.JWT.AccessTokenExpire.Seconds()),
@@ -101,7 +101,7 @@ func ProvideEmailService(client email.Client) service.EmailService {
 }
 
 // ProvidePostAIService 提供 AI 服务
-func ProvidePostAIService(openAIClient openai.Client, tencentClient tencent.Client, cfg *config.Config) *service.PostAIService {
+func ProvidePostAIService(openAIClient openai.Client, tencentClient tencent.Client, cfg *config.Config) service.PostAIService {
 	return service.NewPostAIService(openAIClient, tencentClient, cfg.OpenAI.StrictModeration)
 }
 
@@ -130,7 +130,7 @@ func ProvideSystemMessageService(
 func ProvidePostService(
 	postRepo repository.PostRepository,
 	systemMessageService service.SystemMessageService,
-	postAIService *service.PostAIService,
+	postAIService service.PostAIService,
 	cacheBackend cache.Cache,
 	txManager repository.TransactionManager,
 	hookManager *hook.Manager,
@@ -145,11 +145,11 @@ func ProvideCommentService(
 	commentRepo repository.CommentRepository,
 	postRepo repository.PostRepository,
 	systemMessageService service.SystemMessageService,
-	postAIService *service.PostAIService,
+	postAIService service.PostAIService,
 	cacheBackend cache.Cache,
 	hookManager *hook.Manager,
 	logService *service.LogService,
-) *service.CommentService {
+) service.CommentService {
 	return service.NewCommentService(commentRepo, postRepo, systemMessageService, postAIService, cacheBackend, hookManager, logService)
 }
 
@@ -157,8 +157,8 @@ func ProvideCommentService(
 func ProvideMessageService(
 	messageRepo repository.MessageRepository,
 	cacheBackend cache.Cache,
-	uploadService *service.UploadService,
-) *service.MessageService {
+	uploadService service.UploadService,
+) service.MessageService {
 	return service.NewMessageService(messageRepo, cacheBackend, uploadService)
 }
 
@@ -166,7 +166,7 @@ func ProvideMessageService(
 func ProvideNotificationService(
 	notificationRepo repository.NotificationRepository,
 	cacheBackend cache.Cache,
-) *service.NotificationService {
+) service.NotificationService {
 	return service.NewNotificationService(notificationRepo, cacheBackend)
 }
 
@@ -193,11 +193,11 @@ func ProvideVoteService(
 	voteRepo repository.VoteRepository,
 	postRepo repository.PostRepository,
 	cache cache.Cache,
-	postAIService *service.PostAIService,
+	postAIService service.PostAIService,
 	systemMessageService service.SystemMessageService,
 	hookManager *hook.Manager,
 	logService *service.LogService,
-) *service.VoteService {
+) service.VoteService {
 	return service.NewVoteService(voteRepo, postRepo, cache, postAIService, systemMessageService, hookManager, logService)
 }
 
@@ -212,7 +212,7 @@ func ProvideChatService(
 	userRepo repository.UserRepository,
 	publisher ws.MessagePublisher,
 	cacheBackend cache.Cache,
-	uploadService *service.UploadService,
+	uploadService service.UploadService,
 	pushService service.PushService,
 	seqBufferMgr *cache.SeqBufferManager,
 	pushWorker *service.PushWorker,
@@ -291,7 +291,7 @@ func ProvideGroupService(
 func ProvideUploadService(
 	s3Client *s3.Client,
 	userService service.UserService,
-) *service.UploadService {
+) service.UploadService {
 	return service.NewUploadService(s3Client, userService)
 }
 
@@ -432,11 +432,11 @@ func ProvideHotRankWorker(cfg *config.Config, postRepo repository.PostRepository
 func ProvideQRCodeLoginService(
 	redisClient *redis.Client,
 	publisher ws.MessagePublisher,
-	jwtService *service.JWTService,
+	jwtService service.JWTService,
 	userService service.UserService,
 	activityService service.UserActivityService,
 	logService *service.LogService,
-) *service.QRCodeLoginService {
+) service.QRCodeLoginService {
 	return service.NewQRCodeLoginService(redisClient, publisher, jwtService, userService, activityService, logService)
 }