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/repository/report_repo.go

@@ -1,9 +1,9 @@
-package repository
+package repository
 
 import (
-	"with_you/internal/dto"
-	"with_you/internal/model"
 	"context"
+	"with_you/internal/model"
+	"with_you/internal/query"
 
 	"gorm.io/gorm"
 )
@@ -19,7 +19,7 @@ type ReportRepository interface {
 	// FindByIDWithContext 使用上下文查询举报
 	FindByIDWithContext(ctx context.Context, id string) (*model.Report, error)
 	// List 查询举报列表
-	List(query dto.AdminReportListQuery) ([]*model.Report, int64, error)
+	List(query query.AdminReportListQuery) ([]*model.Report, int64, error)
 	// GetReportCount 获取内容的举报次数
 	GetReportCount(targetType model.ReportTargetType, targetID string) (int64, error)
 	// HasUserReported 检查用户是否已举报过该内容
@@ -87,7 +87,7 @@ func (r *reportRepository) FindByIDWithContext(ctx context.Context, id string) (
 }
 
 // List 查询举报列表
-func (r *reportRepository) List(query dto.AdminReportListQuery) ([]*model.Report, int64, error) {
+func (r *reportRepository) List(query query.AdminReportListQuery) ([]*model.Report, int64, error) {
 	var reports []*model.Report
 	var total int64