Stage 7 (wip): wire remaining ops (backend REST, FBS, gateway transcode) + real UI transport

backend: REST handlers for pass/exchange/resign/hint/evaluate/check_word/complaint/history/chat-list/nudge + new game.ListForAccount (my games) + seat display_name resolution
pkg/fbs: GameActionRequest/ExchangeRequest/EvalRequest/EvalResult/CheckWordRequest/WordCheckResult/ComplaintRequest/HintResult/History/GameList/ChatList + SeatView.display_name; committed Go regenerated (flatc 23.5.26)
gateway: 11 new transcode ops + backendclient methods + FB encoders
ui: edge TS codegen (flatc --ts + protoc-gen-es, committed), FlatBuffers<->model codec, real connect-web transport (binary, bearer auth, Subscribe). prod bundle ~69KB gzip JS

backend/internal/server/handlers.go

@@ -37,8 +37,17 @@ func (s *Server) registerRoutes() {
 		u.GET("/profile", s.handleProfile)
 	}
 	if s.games != nil {
+		u.GET("/games", s.handleListGames)
 		u.POST("/games/:id/play", s.handleSubmitPlay)
 		u.GET("/games/:id/state", s.handleGameState)
+		u.POST("/games/:id/pass", s.handlePass)
+		u.POST("/games/:id/exchange", s.handleExchange)
+		u.POST("/games/:id/resign", s.handleResign)
+		u.POST("/games/:id/hint", s.handleHint)
+		u.POST("/games/:id/evaluate", s.handleEvaluate)
+		u.GET("/games/:id/check_word", s.handleCheckWord)
+		u.POST("/games/:id/complaint", s.handleComplaint)
+		u.GET("/games/:id/history", s.handleHistory)
 	}
 	if s.matchmaker != nil {
 		u.POST("/lobby/enqueue", s.handleEnqueue)
@@ -46,6 +55,8 @@ func (s *Server) registerRoutes() {
 	}
 	if s.social != nil {
 		u.POST("/games/:id/chat", s.handleChatPost)
+		u.GET("/games/:id/chat", s.handleChatList)
+		u.POST("/games/:id/nudge", s.handleNudge)
 	}
 	s.admin.GET("/ping", s.handleAdminPing)
 }