feat(posts): add post reference/internal linking functionality

Add support for referencing other posts within messages through a new post_ref segment type. Includes new PostReference model to track relationships, PostRefService for processing references, and new endpoints for post suggestions, related posts, and reference click tracking.

internal/wire/service.go

@@ -65,6 +65,9 @@ var ServiceSet = wire.NewSet(
 	ProvideUserProfileAuditService,
 	ProvideSetupService,
 
+	// 帖子内链引用
+	ProvidePostRefService,
+
 	// 日志服务
 	ProvideAsyncLogManager,
 	ProvideOperationLogService,
@@ -486,3 +489,10 @@ func ProvideSetupService(
 ) service.SetupService {
 	return service.NewSetupService(userRepo, roleRepo, casbinSvc, cfg.SetupSecret)
 }
+
+func ProvidePostRefService(
+	refRepo repository.PostRefRepository,
+	postRepo repository.PostRepository,
+) service.PostRefService {
+	return service.NewPostRefService(refRepo, postRepo)
+}