feat: add post mention

internal/server/server.go

@@ -165,7 +165,8 @@ func (s *Server) initAuth(cfg *config.Config, logger *zap.Logger) {
 	// Likes: membership in Postgres, count delta batched through Redis
 	// (s.redis may be nil — LikeRepo then applies counts directly).
 	likeRepo := repository.NewLikeRepo(s.pg, s.redis, logger)
-	postSvc := service.NewPostService(postRepo, r2, likeRepo)
+	mentionRepo := repository.NewMentionRepo(s.pg)
+	postSvc := service.NewPostService(postRepo, r2, likeRepo, mentionRepo)
 	bookmarkSvc := service.NewBookmarkService(userRepo, bookmarkRepo)
 	collectionSvc := service.NewCollectionService(userRepo, collectionRepo, postRepo, r2)
 
@@ -237,7 +238,7 @@ func (s *Server) initAuth(cfg *config.Config, logger *zap.Logger) {
 	s.relationH = handler.NewRelationshipHandler(graphSvc)
 	s.notificationH = handler.NewNotificationHandler(notifSvc)
 	s.postH = handler.NewPostHandler(postSvc, graphSvc)
-	s.profileH = handler.NewProfileHandler(userRepo, postRepo, collectionRepo, graphSvc, likeRepo)
+	s.profileH = handler.NewProfileHandler(userRepo, postRepo, collectionRepo, graphSvc, likeRepo, mentionRepo)
 
 	// Sādhana streak: daily chanting log + the growing-plant state. Reads
 	// the chanting half from sadhna_logs and the posting half from the
@@ -643,6 +644,8 @@ func (s *Server) setupRouter() {
 				r.Get("/{id}", s.postH.Get)
 				// Paginated "liked by" list — public, like the count itself.
 				r.Get("/{id}/likes", s.postH.ListLikes)
+				// Tagged users on a post — public (read-only for non-authors).
+				r.Get("/{id}/mentions", s.postH.ListMentions)
 			})
 			// Protected — create / delete / image presign / "my posts" /
 			// reshare actions.
@@ -662,6 +665,10 @@ func (s *Server) setupRouter() {
 				// count is batched into likes_count via Redis.
 				r.Post("/{id}/like", s.postH.Like)
 				r.Delete("/{id}/like", s.postH.Unlike)
+				// Mentions: composer suggestions + author add/remove of tags.
+				r.Get("/mention-suggest", s.postH.MentionSuggest)
+				r.Post("/{id}/mentions", s.postH.AddMention)
+				r.Delete("/{id}/mentions/{userID}", s.postH.RemoveMention)
 				// Report a post (category + optional reason) → admin email.
 				r.Post("/{id}/report", s.postH.Report)
 			})
@@ -725,6 +732,7 @@ func (s *Server) setupRouter() {
 				r.Use(middleware.OptionalAuth(s.authIssuer, s.userRepo))
 				r.Get("/{handle}", s.profileH.Get)
 				r.Get("/{handle}/feed", s.profileH.Feed)
+				r.Get("/{handle}/mentions", s.profileH.MentionsFeed)
 				r.Get("/{handle}/followers", s.profileH.Followers)
 				r.Get("/{handle}/following", s.profileH.Following)
 			})