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/game/service.go

@@ -566,6 +566,13 @@ func (svc *Service) Participants(ctx context.Context, gameID uuid.UUID) ([]uuid.
 	return seats, g.ToMove, g.Status, nil
 }
 
+// ListForAccount returns every game the account is seated in, newest first, for the
+// lobby's active/finished lists. The live position is not loaded — the summaries come
+// straight from the durable rows.
+func (svc *Service) ListForAccount(ctx context.Context, accountID uuid.UUID) ([]Game, error) {
+	return svc.store.ListGamesForAccount(ctx, accountID)
+}
+
 // History returns a game's full, dictionary-independent move journal.
 func (svc *Service) History(ctx context.Context, gameID uuid.UUID) (HistoryView, error) {
 	g, err := svc.store.GetGame(ctx, gameID)

backend/internal/game/store.go

@@ -135,6 +135,50 @@ func (s *Store) GetGame(ctx context.Context, id uuid.UUID) (Game, error) {
 	return projectGame(grow, srows)
 }
 
+// ListGamesForAccount loads every game the account is seated in (active and
+// finished), newest first, each joined with its ordered seats. It backs the lobby's
+// "my games" lists.
+func (s *Store) ListGamesForAccount(ctx context.Context, accountID uuid.UUID) ([]Game, error) {
+	gstmt := postgres.SELECT(table.Games.AllColumns).
+		FROM(table.Games.INNER_JOIN(table.GamePlayers, table.GamePlayers.GameID.EQ(table.Games.GameID))).
+		WHERE(table.GamePlayers.AccountID.EQ(postgres.UUID(accountID))).
+		ORDER_BY(table.Games.UpdatedAt.DESC())
+	var grows []model.Games
+	if err := gstmt.QueryContext(ctx, s.db, &grows); err != nil {
+		return nil, fmt.Errorf("game: list for account: %w", err)
+	}
+	if len(grows) == 0 {
+		return nil, nil
+	}
+
+	ids := make([]postgres.Expression, len(grows))
+	for i, g := range grows {
+		ids[i] = postgres.UUID(g.GameID)
+	}
+	sstmt := postgres.SELECT(table.GamePlayers.AllColumns).
+		FROM(table.GamePlayers).
+		WHERE(table.GamePlayers.GameID.IN(ids...)).
+		ORDER_BY(table.GamePlayers.GameID.ASC(), table.GamePlayers.Seat.ASC())
+	var srows []model.GamePlayers
+	if err := sstmt.QueryContext(ctx, s.db, &srows); err != nil {
+		return nil, fmt.Errorf("game: list seats for account: %w", err)
+	}
+	byGame := make(map[uuid.UUID][]model.GamePlayers, len(grows))
+	for _, r := range srows {
+		byGame[r.GameID] = append(byGame[r.GameID], r)
+	}
+
+	out := make([]Game, 0, len(grows))
+	for _, g := range grows {
+		pg, err := projectGame(g, byGame[g.GameID])
+		if err != nil {
+			return nil, err
+		}
+		out = append(out, pg)
+	}
+	return out, nil
+}
+
 // GetJournal loads the ordered, decoded move journal for a game.
 func (s *Store) GetJournal(ctx context.Context, id uuid.UUID) ([]HistoryMove, error) {
 	stmt := postgres.SELECT(table.GameMoves.AllColumns).

backend/internal/server/dto.go

@@ -66,13 +66,15 @@ type moveRecordDTO struct {
 	Total   int       `json:"total"`
 }
 
-// seatDTO is one seat's public standing.
+// seatDTO is one seat's public standing. DisplayName is resolved from the account
+// store by the handler (the game domain keys seats by account id only).
 type seatDTO struct {
-	Seat      int    `json:"seat"`
-	AccountID string `json:"account_id"`
-	Score     int    `json:"score"`
-	HintsUsed int    `json:"hints_used"`
-	IsWinner  bool   `json:"is_winner"`
+	Seat        int    `json:"seat"`
+	AccountID   string `json:"account_id"`
+	DisplayName string `json:"display_name"`
+	Score       int    `json:"score"`
+	HintsUsed   int    `json:"hints_used"`
+	IsWinner    bool   `json:"is_winner"`
 }
 
 // gameDTO is the shared game summary.

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)
 }

backend/internal/server/handlers_game.go

@@ -0,0 +1,321 @@
+package server
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"github.com/google/uuid"
+
+	"scrabble/backend/internal/engine"
+	"scrabble/backend/internal/game"
+)
+
+// The handlers below extend the Stage 6 vertical slice with the remaining game and
+// chat operations the UI needs (PLAN.md Stage 7). They follow the same pattern as
+// handlers_user.go: X-User-ID identity, the domain service call, a JSON DTO mapped
+// from the result.
+
+// hintResultDTO is the top-ranked move plus the remaining hint budget.
+type hintResultDTO struct {
+	Move           moveRecordDTO `json:"move"`
+	HintsRemaining int           `json:"hints_remaining"`
+}
+
+// evalResultDTO is an unlimited move preview: legality, score and the words formed.
+type evalResultDTO struct {
+	Legal bool     `json:"legal"`
+	Score int      `json:"score"`
+	Words []string `json:"words"`
+}
+
+// wordCheckDTO is the result of the unlimited dictionary lookup tool.
+type wordCheckDTO struct {
+	Word  string `json:"word"`
+	Legal bool   `json:"legal"`
+}
+
+// historyDTO is a game's decoded move journal, the source for client board replay.
+type historyDTO struct {
+	GameID string          `json:"game_id"`
+	Moves  []moveRecordDTO `json:"moves"`
+}
+
+// gameListDTO is the caller's games (active and finished) for the lobby.
+type gameListDTO struct {
+	Games []gameDTO `json:"games"`
+}
+
+// chatListDTO is a game's chat history.
+type chatListDTO struct {
+	Messages []chatDTO `json:"messages"`
+}
+
+// exchangeRequest swaps the given rack tiles back into the bag.
+type exchangeRequest struct {
+	Tiles []string `json:"tiles"`
+}
+
+// complaintRequest disputes a word-check result.
+type complaintRequest struct {
+	Word string `json:"word"`
+	Note string `json:"note"`
+}
+
+// fillSeatNames resolves each seat's display name from the account store, memoising
+// across seats and games within one request.
+func (s *Server) fillSeatNames(ctx context.Context, g *gameDTO, memo map[string]string) {
+	for i := range g.Seats {
+		id := g.Seats[i].AccountID
+		name, ok := memo[id]
+		if !ok {
+			if uid, err := uuid.Parse(id); err == nil {
+				if acc, err := s.accounts.GetByID(ctx, uid); err == nil {
+					name = acc.DisplayName
+				}
+			}
+			memo[id] = name
+		}
+		g.Seats[i].DisplayName = name
+	}
+}
+
+// moveRecordDTOFromHistory projects a journal move into the shared move DTO.
+func moveRecordDTOFromHistory(m game.HistoryMove) moveRecordDTO {
+	tiles := make([]tileDTO, 0, len(m.Tiles))
+	for _, t := range m.Tiles {
+		tiles = append(tiles, tileDTO{Row: t.Row, Col: t.Col, Letter: t.Letter, Blank: t.Blank})
+	}
+	return moveRecordDTO{
+		Player:  m.Seat,
+		Action:  m.Action,
+		Dir:     m.Dir,
+		MainRow: m.MainRow,
+		MainCol: m.MainCol,
+		Tiles:   tiles,
+		Words:   m.Words,
+		Count:   len(m.Words),
+		Score:   m.Score,
+		Total:   m.RunningTotal,
+	}
+}
+
+// handlePass forfeits the player's turn.
+func (s *Server) handlePass(c *gin.Context) {
+	uid, gameID, ok := s.userGame(c)
+	if !ok {
+		return
+	}
+	res, err := s.games.Pass(c.Request.Context(), gameID, uid)
+	if err != nil {
+		s.abortErr(c, err)
+		return
+	}
+	s.writeMoveResult(c, res)
+}
+
+// handleExchange swaps the chosen rack tiles back into the bag.
+func (s *Server) handleExchange(c *gin.Context) {
+	uid, gameID, ok := s.userGame(c)
+	if !ok {
+		return
+	}
+	var req exchangeRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		abortBadRequest(c, "invalid request body")
+		return
+	}
+	res, err := s.games.Exchange(c.Request.Context(), gameID, uid, req.Tiles)
+	if err != nil {
+		s.abortErr(c, err)
+		return
+	}
+	s.writeMoveResult(c, res)
+}
+
+// handleResign resigns the player from the game.
+func (s *Server) handleResign(c *gin.Context) {
+	uid, gameID, ok := s.userGame(c)
+	if !ok {
+		return
+	}
+	res, err := s.games.Resign(c.Request.Context(), gameID, uid)
+	if err != nil {
+		s.abortErr(c, err)
+		return
+	}
+	s.writeMoveResult(c, res)
+}
+
+// handleHint reveals the top-ranked move and spends a hint.
+func (s *Server) handleHint(c *gin.Context) {
+	uid, gameID, ok := s.userGame(c)
+	if !ok {
+		return
+	}
+	h, err := s.games.Hint(c.Request.Context(), gameID, uid)
+	if err != nil {
+		s.abortErr(c, err)
+		return
+	}
+	c.JSON(http.StatusOK, hintResultDTO{
+		Move:           moveRecordDTOFrom(h.Move),
+		HintsRemaining: h.HintsRemaining,
+	})
+}
+
+// handleEvaluate previews a tentative play's legality and score.
+func (s *Server) handleEvaluate(c *gin.Context) {
+	uid, gameID, ok := s.userGame(c)
+	if !ok {
+		return
+	}
+	var req submitPlayRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		abortBadRequest(c, "invalid request body")
+		return
+	}
+	dir, ok := parseDirection(req.Dir)
+	if !ok {
+		abortBadRequest(c, "dir must be H or V")
+		return
+	}
+	tiles := make([]engine.TileRecord, 0, len(req.Tiles))
+	for _, t := range req.Tiles {
+		tiles = append(tiles, engine.TileRecord{Row: t.Row, Col: t.Col, Letter: t.Letter, Blank: t.Blank})
+	}
+	ev, err := s.games.EvaluatePlay(c.Request.Context(), gameID, uid, dir, tiles)
+	if err != nil {
+		s.abortErr(c, err)
+		return
+	}
+	c.JSON(http.StatusOK, evalResultDTO{Legal: ev.Valid, Score: ev.Score, Words: ev.Words})
+}
+
+// handleCheckWord looks a word up in the game's pinned dictionary.
+func (s *Server) handleCheckWord(c *gin.Context) {
+	_, gameID, ok := s.userGame(c)
+	if !ok {
+		return
+	}
+	word := c.Query("word")
+	legal, err := s.games.CheckWord(c.Request.Context(), gameID, word)
+	if err != nil {
+		s.abortErr(c, err)
+		return
+	}
+	c.JSON(http.StatusOK, wordCheckDTO{Word: word, Legal: legal})
+}
+
+// handleComplaint files a word-check complaint into the admin review queue.
+func (s *Server) handleComplaint(c *gin.Context) {
+	uid, gameID, ok := s.userGame(c)
+	if !ok {
+		return
+	}
+	var req complaintRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		abortBadRequest(c, "invalid request body")
+		return
+	}
+	if _, err := s.games.FileComplaint(c.Request.Context(), gameID, uid, req.Word, req.Note); err != nil {
+		s.abortErr(c, err)
+		return
+	}
+	c.JSON(http.StatusOK, okResponse{OK: true})
+}
+
+// handleHistory returns a game's decoded move journal for board replay / history.
+func (s *Server) handleHistory(c *gin.Context) {
+	_, gameID, ok := s.userGame(c)
+	if !ok {
+		return
+	}
+	view, err := s.games.History(c.Request.Context(), gameID)
+	if err != nil {
+		s.abortErr(c, err)
+		return
+	}
+	moves := make([]moveRecordDTO, 0, len(view.Moves))
+	for _, m := range view.Moves {
+		moves = append(moves, moveRecordDTOFromHistory(m))
+	}
+	c.JSON(http.StatusOK, historyDTO{GameID: gameID.String(), Moves: moves})
+}
+
+// handleListGames returns the caller's active and finished games for the lobby.
+func (s *Server) handleListGames(c *gin.Context) {
+	uid, ok := userID(c)
+	if !ok {
+		abortBadRequest(c, "missing identity")
+		return
+	}
+	games, err := s.games.ListForAccount(c.Request.Context(), uid)
+	if err != nil {
+		s.abortErr(c, err)
+		return
+	}
+	memo := map[string]string{}
+	out := make([]gameDTO, 0, len(games))
+	for _, g := range games {
+		dto := gameDTOFromGame(g)
+		s.fillSeatNames(c.Request.Context(), &dto, memo)
+		out = append(out, dto)
+	}
+	c.JSON(http.StatusOK, gameListDTO{Games: out})
+}
+
+// handleChatList returns a game's chat history for the viewer.
+func (s *Server) handleChatList(c *gin.Context) {
+	uid, gameID, ok := s.userGame(c)
+	if !ok {
+		return
+	}
+	msgs, err := s.social.Messages(c.Request.Context(), gameID, uid)
+	if err != nil {
+		s.abortErr(c, err)
+		return
+	}
+	out := make([]chatDTO, 0, len(msgs))
+	for _, m := range msgs {
+		out = append(out, chatDTOFrom(m))
+	}
+	c.JSON(http.StatusOK, chatListDTO{Messages: out})
+}
+
+// handleNudge posts a nudge to the player whose turn is awaited.
+func (s *Server) handleNudge(c *gin.Context) {
+	uid, gameID, ok := s.userGame(c)
+	if !ok {
+		return
+	}
+	msg, err := s.social.Nudge(c.Request.Context(), gameID, uid)
+	if err != nil {
+		s.abortErr(c, err)
+		return
+	}
+	c.JSON(http.StatusOK, chatDTOFrom(msg))
+}
+
+// userGame reads the authenticated account and the :id game param, aborting with the
+// right status when either is missing. ok is false when the request was aborted.
+func (s *Server) userGame(c *gin.Context) (uuid.UUID, uuid.UUID, bool) {
+	uid, ok := userID(c)
+	if !ok {
+		abortBadRequest(c, "missing identity")
+		return uuid.UUID{}, uuid.UUID{}, false
+	}
+	gameID, ok := gameIDParam(c)
+	if !ok {
+		abortBadRequest(c, "invalid game id")
+		return uuid.UUID{}, uuid.UUID{}, false
+	}
+	return uid, gameID, true
+}
+
+// writeMoveResult emits a committed move with seat display names filled in.
+func (s *Server) writeMoveResult(c *gin.Context, res game.MoveResult) {
+	dto := moveResultDTOFrom(res)
+	s.fillSeatNames(c.Request.Context(), &dto.Game, map[string]string{})
+	c.JSON(http.StatusOK, dto)
+}

backend/internal/server/handlers_user.go

@@ -68,7 +68,7 @@ func (s *Server) handleSubmitPlay(c *gin.Context) {
 		s.abortErr(c, err)
 		return
 	}
-	c.JSON(http.StatusOK, moveResultDTOFrom(res))
+	s.writeMoveResult(c, res)
 }
 
 // handleGameState returns the player's view of a game.
@@ -88,7 +88,9 @@ func (s *Server) handleGameState(c *gin.Context) {
 		s.abortErr(c, err)
 		return
 	}
-	c.JSON(http.StatusOK, stateDTOFrom(view))
+	dto := stateDTOFrom(view)
+	s.fillSeatNames(c.Request.Context(), &dto.Game, map[string]string{})
+	c.JSON(http.StatusOK, dto)
 }
 
 // enqueueRequest joins the per-variant auto-match pool.
@@ -118,7 +120,11 @@ func (s *Server) handleEnqueue(c *gin.Context) {
 		s.abortErr(c, err)
 		return
 	}
-	c.JSON(http.StatusOK, matchDTOFrom(res))
+	dto := matchDTOFrom(res)
+	if dto.Game != nil {
+		s.fillSeatNames(c.Request.Context(), dto.Game, map[string]string{})
+	}
+	c.JSON(http.StatusOK, dto)
 }
 
 // handlePoll reports whether the caller has been paired since queueing.
@@ -133,7 +139,11 @@ func (s *Server) handlePoll(c *gin.Context) {
 		s.abortErr(c, err)
 		return
 	}
-	c.JSON(http.StatusOK, matchDTOFrom(res))
+	dto := matchDTOFrom(res)
+	if dto.Game != nil {
+		s.fillSeatNames(c.Request.Context(), dto.Game, map[string]string{})
+	}
+	c.JSON(http.StatusOK, dto)
 }
 
 // chatPostRequest posts a per-game chat message.

gateway/internal/backendclient/api.go

@@ -54,11 +54,12 @@ type MoveRecordResp struct {
 
 // SeatResp is one seat's public standing.
 type SeatResp struct {
-	Seat      int    `json:"seat"`
-	AccountID string `json:"account_id"`
-	Score     int    `json:"score"`
-	HintsUsed int    `json:"hints_used"`
-	IsWinner  bool   `json:"is_winner"`
+	Seat        int    `json:"seat"`
+	AccountID   string `json:"account_id"`
+	DisplayName string `json:"display_name"`
+	Score       int    `json:"score"`
+	HintsUsed   int    `json:"hints_used"`
+	IsWinner    bool   `json:"is_winner"`
 }
 
 // GameResp is the shared game summary.
@@ -189,3 +190,120 @@ func (c *Client) ChatPost(ctx context.Context, userID, gameID, body, clientIP st
 		map[string]string{"body": body}, &out)
 	return out, err
 }
+
+// HintResultResp is the top-ranked move plus the remaining hint budget.
+type HintResultResp struct {
+	Move           MoveRecordResp `json:"move"`
+	HintsRemaining int            `json:"hints_remaining"`
+}
+
+// EvalResultResp is an unlimited move preview.
+type EvalResultResp struct {
+	Legal bool     `json:"legal"`
+	Score int      `json:"score"`
+	Words []string `json:"words"`
+}
+
+// WordCheckResp is a dictionary lookup outcome.
+type WordCheckResp struct {
+	Word  string `json:"word"`
+	Legal bool   `json:"legal"`
+}
+
+// HistoryResp is a game's decoded move journal.
+type HistoryResp struct {
+	GameID string           `json:"game_id"`
+	Moves  []MoveRecordResp `json:"moves"`
+}
+
+// GameListResp is the caller's games for the lobby.
+type GameListResp struct {
+	Games []GameResp `json:"games"`
+}
+
+// ChatListResp is a game's chat history.
+type ChatListResp struct {
+	Messages []ChatResp `json:"messages"`
+}
+
+func (c *Client) gamePath(gameID, suffix string) string {
+	return "/api/v1/user/games/" + url.PathEscape(gameID) + suffix
+}
+
+// Pass forfeits the player's turn.
+func (c *Client) Pass(ctx context.Context, userID, gameID string) (MoveResultResp, error) {
+	var out MoveResultResp
+	err := c.do(ctx, http.MethodPost, c.gamePath(gameID, "/pass"), userID, "", struct{}{}, &out)
+	return out, err
+}
+
+// Exchange swaps the chosen rack tiles back into the bag.
+func (c *Client) Exchange(ctx context.Context, userID, gameID string, tiles []string) (MoveResultResp, error) {
+	var out MoveResultResp
+	err := c.do(ctx, http.MethodPost, c.gamePath(gameID, "/exchange"), userID, "",
+		map[string]any{"tiles": tiles}, &out)
+	return out, err
+}
+
+// Resign resigns the player from the game.
+func (c *Client) Resign(ctx context.Context, userID, gameID string) (MoveResultResp, error) {
+	var out MoveResultResp
+	err := c.do(ctx, http.MethodPost, c.gamePath(gameID, "/resign"), userID, "", struct{}{}, &out)
+	return out, err
+}
+
+// Hint reveals the top-ranked move and spends a hint.
+func (c *Client) Hint(ctx context.Context, userID, gameID string) (HintResultResp, error) {
+	var out HintResultResp
+	err := c.do(ctx, http.MethodPost, c.gamePath(gameID, "/hint"), userID, "", struct{}{}, &out)
+	return out, err
+}
+
+// Evaluate previews a tentative play's legality and score.
+func (c *Client) Evaluate(ctx context.Context, userID, gameID, dir string, tiles []TileJSON) (EvalResultResp, error) {
+	var out EvalResultResp
+	err := c.do(ctx, http.MethodPost, c.gamePath(gameID, "/evaluate"), userID, "",
+		map[string]any{"dir": dir, "tiles": tiles}, &out)
+	return out, err
+}
+
+// CheckWord looks a word up in the game's pinned dictionary.
+func (c *Client) CheckWord(ctx context.Context, userID, gameID, word string) (WordCheckResp, error) {
+	var out WordCheckResp
+	err := c.do(ctx, http.MethodGet, c.gamePath(gameID, "/check_word")+"?word="+url.QueryEscape(word), userID, "", nil, &out)
+	return out, err
+}
+
+// Complaint disputes a word-check result.
+func (c *Client) Complaint(ctx context.Context, userID, gameID, word, note string) error {
+	return c.do(ctx, http.MethodPost, c.gamePath(gameID, "/complaint"), userID, "",
+		map[string]string{"word": word, "note": note}, nil)
+}
+
+// History returns a game's decoded move journal.
+func (c *Client) History(ctx context.Context, userID, gameID string) (HistoryResp, error) {
+	var out HistoryResp
+	err := c.do(ctx, http.MethodGet, c.gamePath(gameID, "/history"), userID, "", nil, &out)
+	return out, err
+}
+
+// ChatList returns a game's chat history.
+func (c *Client) ChatList(ctx context.Context, userID, gameID string) (ChatListResp, error) {
+	var out ChatListResp
+	err := c.do(ctx, http.MethodGet, c.gamePath(gameID, "/chat"), userID, "", nil, &out)
+	return out, err
+}
+
+// Nudge posts a nudge to the player whose turn is awaited.
+func (c *Client) Nudge(ctx context.Context, userID, gameID string) (ChatResp, error) {
+	var out ChatResp
+	err := c.do(ctx, http.MethodPost, c.gamePath(gameID, "/nudge"), userID, "", struct{}{}, &out)
+	return out, err
+}
+
+// GamesList returns the caller's active and finished games.
+func (c *Client) GamesList(ctx context.Context, userID string) (GameListResp, error) {
+	var out GameListResp
+	err := c.do(ctx, http.MethodGet, "/api/v1/user/games", userID, "", nil, &out)
+	return out, err
+}

gateway/internal/transcode/encode.go

@@ -100,9 +100,8 @@ func encodeMatch(m backendclient.MatchResp) []byte {
 	return b.FinishedBytes()
 }
 
-// encodeChat builds a ChatMessage payload.
-func encodeChat(c backendclient.ChatResp) []byte {
-	b := flatbuffers.NewBuilder(192)
+// buildChatMessage builds a ChatMessage table and returns its offset.
+func buildChatMessage(b *flatbuffers.Builder, c backendclient.ChatResp) flatbuffers.UOffsetT {
 	id := b.CreateString(c.ID)
 	gid := b.CreateString(c.GameID)
 	sid := b.CreateString(c.SenderID)
@@ -115,7 +114,103 @@ func encodeChat(c backendclient.ChatResp) []byte {
 	fb.ChatMessageAddKind(b, kind)
 	fb.ChatMessageAddBody(b, body)
 	fb.ChatMessageAddCreatedAtUnix(b, c.CreatedAtUnix)
-	b.Finish(fb.ChatMessageEnd(b))
+	return fb.ChatMessageEnd(b)
+}
+
+// encodeChat builds a ChatMessage payload.
+func encodeChat(c backendclient.ChatResp) []byte {
+	b := flatbuffers.NewBuilder(192)
+	b.Finish(buildChatMessage(b, c))
+	return b.FinishedBytes()
+}
+
+// encodeHintResult builds a HintResult payload.
+func encodeHintResult(r backendclient.HintResultResp) []byte {
+	b := flatbuffers.NewBuilder(512)
+	move := buildMoveRecord(b, r.Move)
+	fb.HintResultStart(b)
+	fb.HintResultAddMove(b, move)
+	fb.HintResultAddHintsRemaining(b, int32(r.HintsRemaining))
+	b.Finish(fb.HintResultEnd(b))
+	return b.FinishedBytes()
+}
+
+// encodeEvalResult builds an EvalResult payload.
+func encodeEvalResult(r backendclient.EvalResultResp) []byte {
+	b := flatbuffers.NewBuilder(256)
+	words := buildStringVector(b, r.Words, fb.EvalResultStartWordsVector)
+	fb.EvalResultStart(b)
+	fb.EvalResultAddLegal(b, r.Legal)
+	fb.EvalResultAddScore(b, int32(r.Score))
+	fb.EvalResultAddWords(b, words)
+	b.Finish(fb.EvalResultEnd(b))
+	return b.FinishedBytes()
+}
+
+// encodeWordCheck builds a WordCheckResult payload.
+func encodeWordCheck(r backendclient.WordCheckResp) []byte {
+	b := flatbuffers.NewBuilder(64)
+	word := b.CreateString(r.Word)
+	fb.WordCheckResultStart(b)
+	fb.WordCheckResultAddWord(b, word)
+	fb.WordCheckResultAddLegal(b, r.Legal)
+	b.Finish(fb.WordCheckResultEnd(b))
+	return b.FinishedBytes()
+}
+
+// encodeHistory builds a History payload (the decoded move journal).
+func encodeHistory(r backendclient.HistoryResp) []byte {
+	b := flatbuffers.NewBuilder(1024)
+	moveOffs := make([]flatbuffers.UOffsetT, len(r.Moves))
+	for i, m := range r.Moves {
+		moveOffs[i] = buildMoveRecord(b, m)
+	}
+	fb.HistoryStartMovesVector(b, len(moveOffs))
+	for i := len(moveOffs) - 1; i >= 0; i-- {
+		b.PrependUOffsetT(moveOffs[i])
+	}
+	moves := b.EndVector(len(moveOffs))
+	gid := b.CreateString(r.GameID)
+	fb.HistoryStart(b)
+	fb.HistoryAddGameId(b, gid)
+	fb.HistoryAddMoves(b, moves)
+	b.Finish(fb.HistoryEnd(b))
+	return b.FinishedBytes()
+}
+
+// encodeGameList builds a GameList payload (the caller's games).
+func encodeGameList(r backendclient.GameListResp) []byte {
+	b := flatbuffers.NewBuilder(1024)
+	gameOffs := make([]flatbuffers.UOffsetT, len(r.Games))
+	for i, g := range r.Games {
+		gameOffs[i] = buildGameView(b, g)
+	}
+	fb.GameListStartGamesVector(b, len(gameOffs))
+	for i := len(gameOffs) - 1; i >= 0; i-- {
+		b.PrependUOffsetT(gameOffs[i])
+	}
+	games := b.EndVector(len(gameOffs))
+	fb.GameListStart(b)
+	fb.GameListAddGames(b, games)
+	b.Finish(fb.GameListEnd(b))
+	return b.FinishedBytes()
+}
+
+// encodeChatList builds a ChatList payload (a game's chat history).
+func encodeChatList(r backendclient.ChatListResp) []byte {
+	b := flatbuffers.NewBuilder(512)
+	msgOffs := make([]flatbuffers.UOffsetT, len(r.Messages))
+	for i, m := range r.Messages {
+		msgOffs[i] = buildChatMessage(b, m)
+	}
+	fb.ChatListStartMessagesVector(b, len(msgOffs))
+	for i := len(msgOffs) - 1; i >= 0; i-- {
+		b.PrependUOffsetT(msgOffs[i])
+	}
+	msgs := b.EndVector(len(msgOffs))
+	fb.ChatListStart(b)
+	fb.ChatListAddMessages(b, msgs)
+	b.Finish(fb.ChatListEnd(b))
 	return b.FinishedBytes()
 }
 
@@ -124,12 +219,14 @@ func buildGameView(b *flatbuffers.Builder, g backendclient.GameResp) flatbuffers
 	seatOffs := make([]flatbuffers.UOffsetT, len(g.Seats))
 	for i, s := range g.Seats {
 		aid := b.CreateString(s.AccountID)
+		dname := b.CreateString(s.DisplayName)
 		fb.SeatViewStart(b)
 		fb.SeatViewAddSeat(b, int32(s.Seat))
 		fb.SeatViewAddAccountId(b, aid)
 		fb.SeatViewAddScore(b, int32(s.Score))
 		fb.SeatViewAddHintsUsed(b, int32(s.HintsUsed))
 		fb.SeatViewAddIsWinner(b, s.IsWinner)
+		fb.SeatViewAddDisplayName(b, dname)
 		seatOffs[i] = fb.SeatViewEnd(b)
 	}
 	fb.GameViewStartSeatsVector(b, len(seatOffs))

gateway/internal/transcode/transcode.go

@@ -26,6 +26,17 @@ const (
 	MsgLobbyEnqueue   = "lobby.enqueue"
 	MsgLobbyPoll      = "lobby.poll"
 	MsgChatPost       = "chat.post"
+	MsgGamesList      = "games.list"
+	MsgGamePass       = "game.pass"
+	MsgGameExchange   = "game.exchange"
+	MsgGameResign     = "game.resign"
+	MsgGameHint       = "game.hint"
+	MsgGameEvaluate   = "game.evaluate"
+	MsgGameCheckWord  = "game.check_word"
+	MsgGameComplaint  = "game.complaint"
+	MsgGameHistory    = "game.history"
+	MsgChatList       = "chat.list"
+	MsgChatNudge      = "chat.nudge"
 )
 
 // Request is one decoded Execute call.
@@ -69,6 +80,17 @@ func NewRegistry(backend *backendclient.Client, tg auth.TelegramValidator) *Regi
 	r.ops[MsgLobbyEnqueue] = Op{Handler: enqueueHandler(backend), Auth: true}
 	r.ops[MsgLobbyPoll] = Op{Handler: pollHandler(backend), Auth: true}
 	r.ops[MsgChatPost] = Op{Handler: chatPostHandler(backend), Auth: true}
+	r.ops[MsgGamesList] = Op{Handler: gamesListHandler(backend), Auth: true}
+	r.ops[MsgGamePass] = Op{Handler: passHandler(backend), Auth: true}
+	r.ops[MsgGameExchange] = Op{Handler: exchangeHandler(backend), Auth: true}
+	r.ops[MsgGameResign] = Op{Handler: resignHandler(backend), Auth: true}
+	r.ops[MsgGameHint] = Op{Handler: hintHandler(backend), Auth: true}
+	r.ops[MsgGameEvaluate] = Op{Handler: evaluateHandler(backend), Auth: true}
+	r.ops[MsgGameCheckWord] = Op{Handler: checkWordHandler(backend), Auth: true}
+	r.ops[MsgGameComplaint] = Op{Handler: complaintHandler(backend), Auth: true}
+	r.ops[MsgGameHistory] = Op{Handler: historyHandler(backend), Auth: true}
+	r.ops[MsgChatList] = Op{Handler: chatListHandler(backend), Auth: true}
+	r.ops[MsgChatNudge] = Op{Handler: nudgeHandler(backend), Auth: true}
 	return r
 }
 
@@ -219,3 +241,150 @@ func decodeTiles(in *fb.SubmitPlayRequest) []backendclient.TileJSON {
 	}
 	return tiles
 }
+
+// decodeEvalTiles reads the tentative tiles from an EvalRequest.
+func decodeEvalTiles(in *fb.EvalRequest) []backendclient.TileJSON {
+	n := in.TilesLength()
+	tiles := make([]backendclient.TileJSON, 0, n)
+	var t fb.TileRecord
+	for i := 0; i < n; i++ {
+		if in.Tiles(&t, i) {
+			tiles = append(tiles, backendclient.TileJSON{
+				Row:    int(t.Row()),
+				Col:    int(t.Col()),
+				Letter: string(t.Letter()),
+				Blank:  t.Blank(),
+			})
+		}
+	}
+	return tiles
+}
+
+// decodeStringVector reads the exchange tiles from an ExchangeRequest.
+func decodeStringVector(in *fb.ExchangeRequest) []string {
+	n := in.TilesLength()
+	out := make([]string, 0, n)
+	for i := 0; i < n; i++ {
+		out = append(out, string(in.Tiles(i)))
+	}
+	return out
+}
+
+func gamesListHandler(backend *backendclient.Client) Handler {
+	return func(ctx context.Context, req Request) ([]byte, error) {
+		res, err := backend.GamesList(ctx, req.UserID)
+		if err != nil {
+			return nil, err
+		}
+		return encodeGameList(res), nil
+	}
+}
+
+func passHandler(backend *backendclient.Client) Handler {
+	return func(ctx context.Context, req Request) ([]byte, error) {
+		in := fb.GetRootAsGameActionRequest(req.Payload, 0)
+		res, err := backend.Pass(ctx, req.UserID, string(in.GameId()))
+		if err != nil {
+			return nil, err
+		}
+		return encodeMoveResult(res), nil
+	}
+}
+
+func resignHandler(backend *backendclient.Client) Handler {
+	return func(ctx context.Context, req Request) ([]byte, error) {
+		in := fb.GetRootAsGameActionRequest(req.Payload, 0)
+		res, err := backend.Resign(ctx, req.UserID, string(in.GameId()))
+		if err != nil {
+			return nil, err
+		}
+		return encodeMoveResult(res), nil
+	}
+}
+
+func exchangeHandler(backend *backendclient.Client) Handler {
+	return func(ctx context.Context, req Request) ([]byte, error) {
+		in := fb.GetRootAsExchangeRequest(req.Payload, 0)
+		res, err := backend.Exchange(ctx, req.UserID, string(in.GameId()), decodeStringVector(in))
+		if err != nil {
+			return nil, err
+		}
+		return encodeMoveResult(res), nil
+	}
+}
+
+func hintHandler(backend *backendclient.Client) Handler {
+	return func(ctx context.Context, req Request) ([]byte, error) {
+		in := fb.GetRootAsGameActionRequest(req.Payload, 0)
+		res, err := backend.Hint(ctx, req.UserID, string(in.GameId()))
+		if err != nil {
+			return nil, err
+		}
+		return encodeHintResult(res), nil
+	}
+}
+
+func evaluateHandler(backend *backendclient.Client) Handler {
+	return func(ctx context.Context, req Request) ([]byte, error) {
+		in := fb.GetRootAsEvalRequest(req.Payload, 0)
+		res, err := backend.Evaluate(ctx, req.UserID, string(in.GameId()), string(in.Dir()), decodeEvalTiles(in))
+		if err != nil {
+			return nil, err
+		}
+		return encodeEvalResult(res), nil
+	}
+}
+
+func checkWordHandler(backend *backendclient.Client) Handler {
+	return func(ctx context.Context, req Request) ([]byte, error) {
+		in := fb.GetRootAsCheckWordRequest(req.Payload, 0)
+		res, err := backend.CheckWord(ctx, req.UserID, string(in.GameId()), string(in.Word()))
+		if err != nil {
+			return nil, err
+		}
+		return encodeWordCheck(res), nil
+	}
+}
+
+func complaintHandler(backend *backendclient.Client) Handler {
+	return func(ctx context.Context, req Request) ([]byte, error) {
+		in := fb.GetRootAsComplaintRequest(req.Payload, 0)
+		if err := backend.Complaint(ctx, req.UserID, string(in.GameId()), string(in.Word()), string(in.Note())); err != nil {
+			return nil, err
+		}
+		return encodeAck(true), nil
+	}
+}
+
+func historyHandler(backend *backendclient.Client) Handler {
+	return func(ctx context.Context, req Request) ([]byte, error) {
+		in := fb.GetRootAsGameActionRequest(req.Payload, 0)
+		res, err := backend.History(ctx, req.UserID, string(in.GameId()))
+		if err != nil {
+			return nil, err
+		}
+		return encodeHistory(res), nil
+	}
+}
+
+func chatListHandler(backend *backendclient.Client) Handler {
+	return func(ctx context.Context, req Request) ([]byte, error) {
+		in := fb.GetRootAsGameActionRequest(req.Payload, 0)
+		res, err := backend.ChatList(ctx, req.UserID, string(in.GameId()))
+		if err != nil {
+			return nil, err
+		}
+		return encodeChatList(res), nil
+	}
+}
+
+func nudgeHandler(backend *backendclient.Client) Handler {
+	return func(ctx context.Context, req Request) ([]byte, error) {
+		in := fb.GetRootAsGameActionRequest(req.Payload, 0)
+		res, err := backend.Nudge(ctx, req.UserID, string(in.GameId()))
+		if err != nil {
+			return nil, err
+		}
+		return encodeChat(res), nil
+	}
+}

pkg/fbs/scrabble.fbs

@@ -23,13 +23,15 @@ table TileRecord {
   blank:bool;
 }
 
-// SeatView is one seat's public standing in a game.
+// SeatView is one seat's public standing in a game. display_name is resolved by the
+// backend from the account store (added trailing — backward-compatible).
 table SeatView {
   seat:int;
   account_id:string;
   score:int;
   hints_used:int;
   is_winner:bool;
+  display_name:string;
 }
 
 // GameView is the shared (non-private) game summary.
@@ -143,6 +145,67 @@ table StateView {
   hints_remaining:int;
 }
 
+// GameActionRequest carries just a game id (pass / resign / hint / history).
+table GameActionRequest {
+  game_id:string;
+}
+
+// ExchangeRequest swaps the listed rack tiles back into the bag.
+table ExchangeRequest {
+  game_id:string;
+  tiles:[string];
+}
+
+// EvalRequest previews a tentative play without committing it.
+table EvalRequest {
+  game_id:string;
+  dir:string;
+  tiles:[TileRecord];
+}
+
+// EvalResult is an unlimited move preview: legality, score and the words formed.
+table EvalResult {
+  legal:bool;
+  score:int;
+  words:[string];
+}
+
+// CheckWordRequest looks a word up in the game's pinned dictionary.
+table CheckWordRequest {
+  game_id:string;
+  word:string;
+}
+
+// WordCheckResult is the dictionary lookup outcome.
+table WordCheckResult {
+  word:string;
+  legal:bool;
+}
+
+// ComplaintRequest disputes a word-check result.
+table ComplaintRequest {
+  game_id:string;
+  word:string;
+  note:string;
+}
+
+// HintResult is the top-ranked move plus the remaining hint budget.
+table HintResult {
+  move:MoveRecord;
+  hints_remaining:int;
+}
+
+// History is a game's decoded move journal — the source for client board replay.
+table History {
+  game_id:string;
+  moves:[MoveRecord];
+}
+
+// GameList is the caller's games (active and finished) for the lobby.
+table GameList {
+  games:[GameView];
+}
+
 // --- lobby (authenticated) ---
 
 // EnqueueRequest joins the per-variant auto-match pool.
@@ -174,6 +237,11 @@ table ChatMessage {
   created_at_unix:long;
 }
 
+// ChatList is a game's chat history.
+table ChatList {
+  messages:[ChatMessage];
+}
+
 // --- push event payloads ---
 
 // YourTurnEvent signals that it is now the recipient's turn.

pkg/fbs/scrabblefb/ChatList.go

@@ -0,0 +1,75 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package scrabblefb
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type ChatList struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsChatList(buf []byte, offset flatbuffers.UOffsetT) *ChatList {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &ChatList{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishChatListBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsChatList(buf []byte, offset flatbuffers.UOffsetT) *ChatList {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &ChatList{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedChatListBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *ChatList) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *ChatList) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *ChatList) Messages(obj *ChatMessage, j int) bool {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := rcv._tab.Vector(o)
+		x += flatbuffers.UOffsetT(j) * 4
+		x = rcv._tab.Indirect(x)
+		obj.Init(rcv._tab.Bytes, x)
+		return true
+	}
+	return false
+}
+
+func (rcv *ChatList) MessagesLength() int {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.VectorLen(o)
+	}
+	return 0
+}
+
+func ChatListStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func ChatListAddMessages(builder *flatbuffers.Builder, messages flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(messages), 0)
+}
+func ChatListStartMessagesVector(builder *flatbuffers.Builder, numElems int) flatbuffers.UOffsetT {
+	return builder.StartVector(4, numElems, 4)
+}
+func ChatListEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/fbs/scrabblefb/CheckWordRequest.go

@@ -0,0 +1,71 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package scrabblefb
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type CheckWordRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsCheckWordRequest(buf []byte, offset flatbuffers.UOffsetT) *CheckWordRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &CheckWordRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishCheckWordRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsCheckWordRequest(buf []byte, offset flatbuffers.UOffsetT) *CheckWordRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &CheckWordRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedCheckWordRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *CheckWordRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *CheckWordRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *CheckWordRequest) GameId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *CheckWordRequest) Word() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func CheckWordRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(2)
+}
+func CheckWordRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func CheckWordRequestAddWord(builder *flatbuffers.Builder, word flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(1, flatbuffers.UOffsetT(word), 0)
+}
+func CheckWordRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/fbs/scrabblefb/ComplaintRequest.go

@@ -0,0 +1,82 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package scrabblefb
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type ComplaintRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsComplaintRequest(buf []byte, offset flatbuffers.UOffsetT) *ComplaintRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &ComplaintRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishComplaintRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsComplaintRequest(buf []byte, offset flatbuffers.UOffsetT) *ComplaintRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &ComplaintRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedComplaintRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *ComplaintRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *ComplaintRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *ComplaintRequest) GameId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *ComplaintRequest) Word() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *ComplaintRequest) Note() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(8))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func ComplaintRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(3)
+}
+func ComplaintRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func ComplaintRequestAddWord(builder *flatbuffers.Builder, word flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(1, flatbuffers.UOffsetT(word), 0)
+}
+func ComplaintRequestAddNote(builder *flatbuffers.Builder, note flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(2, flatbuffers.UOffsetT(note), 0)
+}
+func ComplaintRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/fbs/scrabblefb/EvalRequest.go

@@ -0,0 +1,97 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package scrabblefb
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type EvalRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsEvalRequest(buf []byte, offset flatbuffers.UOffsetT) *EvalRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &EvalRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishEvalRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsEvalRequest(buf []byte, offset flatbuffers.UOffsetT) *EvalRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &EvalRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedEvalRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *EvalRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *EvalRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *EvalRequest) GameId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *EvalRequest) Dir() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *EvalRequest) Tiles(obj *TileRecord, j int) bool {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(8))
+	if o != 0 {
+		x := rcv._tab.Vector(o)
+		x += flatbuffers.UOffsetT(j) * 4
+		x = rcv._tab.Indirect(x)
+		obj.Init(rcv._tab.Bytes, x)
+		return true
+	}
+	return false
+}
+
+func (rcv *EvalRequest) TilesLength() int {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(8))
+	if o != 0 {
+		return rcv._tab.VectorLen(o)
+	}
+	return 0
+}
+
+func EvalRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(3)
+}
+func EvalRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func EvalRequestAddDir(builder *flatbuffers.Builder, dir flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(1, flatbuffers.UOffsetT(dir), 0)
+}
+func EvalRequestAddTiles(builder *flatbuffers.Builder, tiles flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(2, flatbuffers.UOffsetT(tiles), 0)
+}
+func EvalRequestStartTilesVector(builder *flatbuffers.Builder, numElems int) flatbuffers.UOffsetT {
+	return builder.StartVector(4, numElems, 4)
+}
+func EvalRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/fbs/scrabblefb/EvalResult.go

@@ -0,0 +1,102 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package scrabblefb
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type EvalResult struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsEvalResult(buf []byte, offset flatbuffers.UOffsetT) *EvalResult {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &EvalResult{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishEvalResultBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsEvalResult(buf []byte, offset flatbuffers.UOffsetT) *EvalResult {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &EvalResult{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedEvalResultBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *EvalResult) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *EvalResult) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *EvalResult) Legal() bool {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.GetBool(o + rcv._tab.Pos)
+	}
+	return false
+}
+
+func (rcv *EvalResult) MutateLegal(n bool) bool {
+	return rcv._tab.MutateBoolSlot(4, n)
+}
+
+func (rcv *EvalResult) Score() int32 {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.GetInt32(o + rcv._tab.Pos)
+	}
+	return 0
+}
+
+func (rcv *EvalResult) MutateScore(n int32) bool {
+	return rcv._tab.MutateInt32Slot(6, n)
+}
+
+func (rcv *EvalResult) Words(j int) []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(8))
+	if o != 0 {
+		a := rcv._tab.Vector(o)
+		return rcv._tab.ByteVector(a + flatbuffers.UOffsetT(j*4))
+	}
+	return nil
+}
+
+func (rcv *EvalResult) WordsLength() int {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(8))
+	if o != 0 {
+		return rcv._tab.VectorLen(o)
+	}
+	return 0
+}
+
+func EvalResultStart(builder *flatbuffers.Builder) {
+	builder.StartObject(3)
+}
+func EvalResultAddLegal(builder *flatbuffers.Builder, legal bool) {
+	builder.PrependBoolSlot(0, legal, false)
+}
+func EvalResultAddScore(builder *flatbuffers.Builder, score int32) {
+	builder.PrependInt32Slot(1, score, 0)
+}
+func EvalResultAddWords(builder *flatbuffers.Builder, words flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(2, flatbuffers.UOffsetT(words), 0)
+}
+func EvalResultStartWordsVector(builder *flatbuffers.Builder, numElems int) flatbuffers.UOffsetT {
+	return builder.StartVector(4, numElems, 4)
+}
+func EvalResultEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/fbs/scrabblefb/ExchangeRequest.go

@@ -0,0 +1,83 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package scrabblefb
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type ExchangeRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsExchangeRequest(buf []byte, offset flatbuffers.UOffsetT) *ExchangeRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &ExchangeRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishExchangeRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsExchangeRequest(buf []byte, offset flatbuffers.UOffsetT) *ExchangeRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &ExchangeRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedExchangeRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *ExchangeRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *ExchangeRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *ExchangeRequest) GameId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *ExchangeRequest) Tiles(j int) []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		a := rcv._tab.Vector(o)
+		return rcv._tab.ByteVector(a + flatbuffers.UOffsetT(j*4))
+	}
+	return nil
+}
+
+func (rcv *ExchangeRequest) TilesLength() int {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.VectorLen(o)
+	}
+	return 0
+}
+
+func ExchangeRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(2)
+}
+func ExchangeRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func ExchangeRequestAddTiles(builder *flatbuffers.Builder, tiles flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(1, flatbuffers.UOffsetT(tiles), 0)
+}
+func ExchangeRequestStartTilesVector(builder *flatbuffers.Builder, numElems int) flatbuffers.UOffsetT {
+	return builder.StartVector(4, numElems, 4)
+}
+func ExchangeRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/fbs/scrabblefb/GameActionRequest.go

@@ -0,0 +1,60 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package scrabblefb
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type GameActionRequest struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsGameActionRequest(buf []byte, offset flatbuffers.UOffsetT) *GameActionRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &GameActionRequest{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishGameActionRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsGameActionRequest(buf []byte, offset flatbuffers.UOffsetT) *GameActionRequest {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &GameActionRequest{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedGameActionRequestBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *GameActionRequest) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *GameActionRequest) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *GameActionRequest) GameId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func GameActionRequestStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func GameActionRequestAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func GameActionRequestEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/fbs/scrabblefb/GameList.go

@@ -0,0 +1,75 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package scrabblefb
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type GameList struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsGameList(buf []byte, offset flatbuffers.UOffsetT) *GameList {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &GameList{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishGameListBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsGameList(buf []byte, offset flatbuffers.UOffsetT) *GameList {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &GameList{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedGameListBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *GameList) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *GameList) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *GameList) Games(obj *GameView, j int) bool {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := rcv._tab.Vector(o)
+		x += flatbuffers.UOffsetT(j) * 4
+		x = rcv._tab.Indirect(x)
+		obj.Init(rcv._tab.Bytes, x)
+		return true
+	}
+	return false
+}
+
+func (rcv *GameList) GamesLength() int {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.VectorLen(o)
+	}
+	return 0
+}
+
+func GameListStart(builder *flatbuffers.Builder) {
+	builder.StartObject(1)
+}
+func GameListAddGames(builder *flatbuffers.Builder, games flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(games), 0)
+}
+func GameListStartGamesVector(builder *flatbuffers.Builder, numElems int) flatbuffers.UOffsetT {
+	return builder.StartVector(4, numElems, 4)
+}
+func GameListEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/fbs/scrabblefb/HintResult.go

@@ -0,0 +1,80 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package scrabblefb
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type HintResult struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsHintResult(buf []byte, offset flatbuffers.UOffsetT) *HintResult {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &HintResult{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishHintResultBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsHintResult(buf []byte, offset flatbuffers.UOffsetT) *HintResult {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &HintResult{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedHintResultBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *HintResult) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *HintResult) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *HintResult) Move(obj *MoveRecord) *MoveRecord {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		x := rcv._tab.Indirect(o + rcv._tab.Pos)
+		if obj == nil {
+			obj = new(MoveRecord)
+		}
+		obj.Init(rcv._tab.Bytes, x)
+		return obj
+	}
+	return nil
+}
+
+func (rcv *HintResult) HintsRemaining() int32 {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.GetInt32(o + rcv._tab.Pos)
+	}
+	return 0
+}
+
+func (rcv *HintResult) MutateHintsRemaining(n int32) bool {
+	return rcv._tab.MutateInt32Slot(6, n)
+}
+
+func HintResultStart(builder *flatbuffers.Builder) {
+	builder.StartObject(2)
+}
+func HintResultAddMove(builder *flatbuffers.Builder, move flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(move), 0)
+}
+func HintResultAddHintsRemaining(builder *flatbuffers.Builder, hintsRemaining int32) {
+	builder.PrependInt32Slot(1, hintsRemaining, 0)
+}
+func HintResultEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/fbs/scrabblefb/History.go

@@ -0,0 +1,86 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package scrabblefb
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type History struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsHistory(buf []byte, offset flatbuffers.UOffsetT) *History {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &History{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishHistoryBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsHistory(buf []byte, offset flatbuffers.UOffsetT) *History {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &History{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedHistoryBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *History) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *History) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *History) GameId() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *History) Moves(obj *MoveRecord, j int) bool {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		x := rcv._tab.Vector(o)
+		x += flatbuffers.UOffsetT(j) * 4
+		x = rcv._tab.Indirect(x)
+		obj.Init(rcv._tab.Bytes, x)
+		return true
+	}
+	return false
+}
+
+func (rcv *History) MovesLength() int {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.VectorLen(o)
+	}
+	return 0
+}
+
+func HistoryStart(builder *flatbuffers.Builder) {
+	builder.StartObject(2)
+}
+func HistoryAddGameId(builder *flatbuffers.Builder, gameId flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(gameId), 0)
+}
+func HistoryAddMoves(builder *flatbuffers.Builder, moves flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(1, flatbuffers.UOffsetT(moves), 0)
+}
+func HistoryStartMovesVector(builder *flatbuffers.Builder, numElems int) flatbuffers.UOffsetT {
+	return builder.StartVector(4, numElems, 4)
+}
+func HistoryEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

pkg/fbs/scrabblefb/SeatView.go

@@ -97,8 +97,16 @@ func (rcv *SeatView) MutateIsWinner(n bool) bool {
 	return rcv._tab.MutateBoolSlot(12, n)
 }
 
+func (rcv *SeatView) DisplayName() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(14))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
 func SeatViewStart(builder *flatbuffers.Builder) {
-	builder.StartObject(5)
+	builder.StartObject(6)
 }
 func SeatViewAddSeat(builder *flatbuffers.Builder, seat int32) {
 	builder.PrependInt32Slot(0, seat, 0)
@@ -115,6 +123,9 @@ func SeatViewAddHintsUsed(builder *flatbuffers.Builder, hintsUsed int32) {
 func SeatViewAddIsWinner(builder *flatbuffers.Builder, isWinner bool) {
 	builder.PrependBoolSlot(4, isWinner, false)
 }
+func SeatViewAddDisplayName(builder *flatbuffers.Builder, displayName flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(5, flatbuffers.UOffsetT(displayName), 0)
+}
 func SeatViewEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
 	return builder.EndObject()
 }

pkg/fbs/scrabblefb/WordCheckResult.go

@@ -0,0 +1,75 @@
+// Code generated by the FlatBuffers compiler. DO NOT EDIT.
+
+package scrabblefb
+
+import (
+	flatbuffers "github.com/google/flatbuffers/go"
+)
+
+type WordCheckResult struct {
+	_tab flatbuffers.Table
+}
+
+func GetRootAsWordCheckResult(buf []byte, offset flatbuffers.UOffsetT) *WordCheckResult {
+	n := flatbuffers.GetUOffsetT(buf[offset:])
+	x := &WordCheckResult{}
+	x.Init(buf, n+offset)
+	return x
+}
+
+func FinishWordCheckResultBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.Finish(offset)
+}
+
+func GetSizePrefixedRootAsWordCheckResult(buf []byte, offset flatbuffers.UOffsetT) *WordCheckResult {
+	n := flatbuffers.GetUOffsetT(buf[offset+flatbuffers.SizeUint32:])
+	x := &WordCheckResult{}
+	x.Init(buf, n+offset+flatbuffers.SizeUint32)
+	return x
+}
+
+func FinishSizePrefixedWordCheckResultBuffer(builder *flatbuffers.Builder, offset flatbuffers.UOffsetT) {
+	builder.FinishSizePrefixed(offset)
+}
+
+func (rcv *WordCheckResult) Init(buf []byte, i flatbuffers.UOffsetT) {
+	rcv._tab.Bytes = buf
+	rcv._tab.Pos = i
+}
+
+func (rcv *WordCheckResult) Table() flatbuffers.Table {
+	return rcv._tab
+}
+
+func (rcv *WordCheckResult) Word() []byte {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(4))
+	if o != 0 {
+		return rcv._tab.ByteVector(o + rcv._tab.Pos)
+	}
+	return nil
+}
+
+func (rcv *WordCheckResult) Legal() bool {
+	o := flatbuffers.UOffsetT(rcv._tab.Offset(6))
+	if o != 0 {
+		return rcv._tab.GetBool(o + rcv._tab.Pos)
+	}
+	return false
+}
+
+func (rcv *WordCheckResult) MutateLegal(n bool) bool {
+	return rcv._tab.MutateBoolSlot(6, n)
+}
+
+func WordCheckResultStart(builder *flatbuffers.Builder) {
+	builder.StartObject(2)
+}
+func WordCheckResultAddWord(builder *flatbuffers.Builder, word flatbuffers.UOffsetT) {
+	builder.PrependUOffsetTSlot(0, flatbuffers.UOffsetT(word), 0)
+}
+func WordCheckResultAddLegal(builder *flatbuffers.Builder, legal bool) {
+	builder.PrependBoolSlot(1, legal, false)
+}
+func WordCheckResultEnd(builder *flatbuffers.Builder) flatbuffers.UOffsetT {
+	return builder.EndObject()
+}

ui/buf.gen.yaml

@@ -0,0 +1,9 @@
+# Generates the TypeScript Connect client for the edge envelope service from the
+# same gateway/proto/edge/v1/edge.proto the Go gateway uses. The committed output
+# lives under src/gen/edge/; CI only builds it (dev-time codegen, like pkg/Makefile).
+version: v2
+plugins:
+  - local: ./node_modules/.bin/protoc-gen-es
+    out: src/gen
+    opt:
+      - target=ts

ui/package.json

@@ -10,11 +10,19 @@
     "build": "vite build",
     "preview": "vite preview",
     "check": "svelte-check --tsconfig ./tsconfig.json",
+    "codegen": "rm -rf src/gen && flatc --ts -o src/gen/fbs ../pkg/fbs/scrabble.fbs && buf generate ../gateway --template buf.gen.yaml",
     "test:unit": "vitest run",
     "test:watch": "vitest",
     "test:e2e": "playwright test"
   },
+  "dependencies": {
+    "@bufbuild/protobuf": "^2.12.0",
+    "@connectrpc/connect": "^2.1.0",
+    "@connectrpc/connect-web": "^2.1.0",
+    "flatbuffers": "^25.9.23"
+  },
   "devDependencies": {
+    "@bufbuild/protoc-gen-es": "^2.12.0",
     "@playwright/test": "^1.49.0",
     "@sveltejs/vite-plugin-svelte": "^5.0.0",
     "@types/node": "^22.10.0",

ui/pnpm-lock.yaml

@@ -7,7 +7,23 @@ settings:
 importers:
 
   .:
+    dependencies:
+      '@bufbuild/protobuf':
+        specifier: ^2.12.0
+        version: 2.12.0
+      '@connectrpc/connect':
+        specifier: ^2.1.0
+        version: 2.1.1(@bufbuild/protobuf@2.12.0)
+      '@connectrpc/connect-web':
+        specifier: ^2.1.0
+        version: 2.1.1(@bufbuild/protobuf@2.12.0)(@connectrpc/connect@2.1.1(@bufbuild/protobuf@2.12.0))
+      flatbuffers:
+        specifier: ^25.9.23
+        version: 25.9.23
     devDependencies:
+      '@bufbuild/protoc-gen-es':
+        specifier: ^2.12.0
+        version: 2.12.0(@bufbuild/protobuf@2.12.0)
       '@playwright/test':
         specifier: ^1.49.0
         version: 1.60.0
@@ -35,6 +51,33 @@ importers:
 
 packages:
 
+  '@bufbuild/protobuf@2.12.0':
+    resolution: {integrity: sha512-B/XlCaFIP8LOwzo+bz5uFzATYokcwCKQcghqnlfwSmM5eX/qTkvDBnDPs+gXtX/RyjxJ4DRikECcPJbyALA8FA==}
+
+  '@bufbuild/protoc-gen-es@2.12.0':
+    resolution: {integrity: sha512-d9htF6jEkSwPbp9d/vSmZOBF7eeG18AvTMKmVg4I23afnrQOxL2w3WOXa9TaufMCyu24QakEUb4vux8apI5e7A==}
+    engines: {node: '>=20'}
+    hasBin: true
+    peerDependencies:
+      '@bufbuild/protobuf': 2.12.0
+    peerDependenciesMeta:
+      '@bufbuild/protobuf':
+        optional: true
+
+  '@bufbuild/protoplugin@2.12.0':
+    resolution: {integrity: sha512-ORlDITp8AFUXzIhLRoMCG+ud+D3MPKWb5HQXBoskMMnjeyEjE1H1qLonVNPyOr8lkx3xSfYUo8a0dvOZJVAzow==}
+
+  '@connectrpc/connect-web@2.1.1':
+    resolution: {integrity: sha512-J8317Q2MaFRCT1jzVR1o06bZhDIBmU0UAzWx6xOIXzOq8+k71/+k7MUF7AwcBUX+34WIvbm5syRgC5HXQA8fOg==}
+    peerDependencies:
+      '@bufbuild/protobuf': ^2.7.0
+      '@connectrpc/connect': 2.1.1
+
+  '@connectrpc/connect@2.1.1':
+    resolution: {integrity: sha512-JzhkaTvM73m2K1URT6tv53k2RwngSmCXLZJgK580qNQOXRzZRR/BCMfZw3h+90JpnG6XksP5bYT+cz0rpUzUWQ==}
+    peerDependencies:
+      '@bufbuild/protobuf': ^2.7.0
+
   '@esbuild/aix-ppc64@0.25.12':
     resolution: {integrity: sha512-Hhmwd6CInZ3dwpuGTF8fJG6yoWmsToE+vYgD4nytZVxcu1ulHpUQRAB1UJ8+N1Am3Mz4+xOByoQoSZf4D+CpkA==}
     engines: {node: '>=18'}
@@ -385,6 +428,11 @@ packages:
   '@types/trusted-types@2.0.7':
     resolution: {integrity: sha512-ScaPdn1dQczgbl0QFTeTOmVHFULt394XJgOQNoyVhZ6r2vLnMLJfBPd53SB52T/3G36VI1/g2MZaX0cwDuXsfw==}
 
+  '@typescript/vfs@1.6.4':
+    resolution: {integrity: sha512-PJFXFS4ZJKiJ9Qiuix6Dz/OwEIqHD7Dme1UwZhTK11vR+5dqW2ACbdndWQexBzCx+CPuMe5WBYQWCsFyGlQLlQ==}
+    peerDependencies:
+      typescript: '*'
+
   '@vitest/expect@3.2.6':
     resolution: {integrity: sha512-1+7q9BtaKzEmO+fmNT3kYvoNn5Y71XWAx2Q5HRim4tTVRQVRv4uJFAQ5FbK0OPUeNP/WmVCpxYxoJdvuHVjzBQ==}
 
@@ -506,6 +554,9 @@ packages:
       picomatch:
         optional: true
 
+  flatbuffers@25.9.23:
+    resolution: {integrity: sha512-MI1qs7Lo4Syw0EOzUl0xjs2lsoeqFku44KpngfIduHBYvzm8h2+7K8YMQh1JtVVVrUvhLpNwqVi4DERegUJhPQ==}
+
   fsevents@2.3.2:
     resolution: {integrity: sha512-xiqMQR4xAeHTuB9uWm+fFRcIOgKBMiOBP+eXiyT7jsgVCq1bkVygt00oASowB7EdtpOHaaPgKt812P9ab+DDKA==}
     engines: {node: ^8.16.0 || ^10.6.0 || >=11.0.0}
@@ -638,6 +689,11 @@ packages:
     resolution: {integrity: sha512-azl+t0z7pw/z958Gy9svOTuzqIk6xq+NSheJzn5MMWtWTFywIacg2wUlzKFGtt3cthx0r2SxMK0yzJOR0IES7Q==}
     engines: {node: '>=14.0.0'}
 
+  typescript@5.4.5:
+    resolution: {integrity: sha512-vcI4UpRgg81oIRUFwR0WSIHKt11nJ7SAVlYNIu+QpqeyXP+gpQJy/Z4+F0aGxSE4MqwjyXvW/TzgkLAx2AGHwQ==}
+    engines: {node: '>=14.17'}
+    hasBin: true
+
   typescript@5.9.3:
     resolution: {integrity: sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==}
     engines: {node: '>=14.17'}
@@ -737,6 +793,33 @@ packages:
 
 snapshots:
 
+  '@bufbuild/protobuf@2.12.0': {}
+
+  '@bufbuild/protoc-gen-es@2.12.0(@bufbuild/protobuf@2.12.0)':
+    dependencies:
+      '@bufbuild/protoplugin': 2.12.0
+    optionalDependencies:
+      '@bufbuild/protobuf': 2.12.0
+    transitivePeerDependencies:
+      - supports-color
+
+  '@bufbuild/protoplugin@2.12.0':
+    dependencies:
+      '@bufbuild/protobuf': 2.12.0
+      '@typescript/vfs': 1.6.4(typescript@5.4.5)
+      typescript: 5.4.5
+    transitivePeerDependencies:
+      - supports-color
+
+  '@connectrpc/connect-web@2.1.1(@bufbuild/protobuf@2.12.0)(@connectrpc/connect@2.1.1(@bufbuild/protobuf@2.12.0))':
+    dependencies:
+      '@bufbuild/protobuf': 2.12.0
+      '@connectrpc/connect': 2.1.1(@bufbuild/protobuf@2.12.0)
+
+  '@connectrpc/connect@2.1.1(@bufbuild/protobuf@2.12.0)':
+    dependencies:
+      '@bufbuild/protobuf': 2.12.0
+
   '@esbuild/aix-ppc64@0.25.12':
     optional: true
 
@@ -954,6 +1037,13 @@ snapshots:
 
   '@types/trusted-types@2.0.7': {}
 
+  '@typescript/vfs@1.6.4(typescript@5.4.5)':
+    dependencies:
+      debug: 4.4.3
+      typescript: 5.4.5
+    transitivePeerDependencies:
+      - supports-color
+
   '@vitest/expect@3.2.6':
     dependencies:
       '@types/chai': 5.2.3
@@ -1079,6 +1169,8 @@ snapshots:
     optionalDependencies:
       picomatch: 4.0.4
 
+  flatbuffers@25.9.23: {}
+
   fsevents@2.3.2:
     optional: true
 
@@ -1226,6 +1318,8 @@ snapshots:
 
   tinyspy@4.0.4: {}
 
+  typescript@5.4.5: {}
+
   typescript@5.9.3: {}
 
   undici-types@6.21.0: {}

ui/src/gen/edge/v1/edge_pb.ts

@@ -0,0 +1,159 @@
+// @generated by protoc-gen-es v2.12.0 with parameter "target=ts"
+// @generated from file edge/v1/edge.proto (package scrabble.edge.v1, syntax proto3)
+/* eslint-disable */
+
+// Package scrabble.edge.v1 is the client <-> gateway Connect-RPC contract. It is
+// deliberately minimal (ARCHITECTURE.md §2): a single unary Execute that routes
+// by message_type, and a server-streaming Subscribe for the in-app live channel.
+// The actual request/response and event bodies travel as FlatBuffers bytes in the
+// payload fields (pkg/fbs). The session token rides in the Authorization header,
+// not the envelope (no per-request signing — ARCHITECTURE.md §3).
+
+import type { GenFile, GenMessage, GenService } from "@bufbuild/protobuf/codegenv2";
+import { fileDesc, messageDesc, serviceDesc } from "@bufbuild/protobuf/codegenv2";
+import type { Message } from "@bufbuild/protobuf";
+
+/**
+ * Describes the file edge/v1/edge.proto.
+ */
+export const file_edge_v1_edge: GenFile = /*@__PURE__*/
+  fileDesc("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");
+
+/**
+ * ExecuteRequest is the unary envelope. message_type selects the operation;
+ * payload is its FlatBuffers-encoded request body; request_id is an optional
+ * client correlation id echoed back.
+ *
+ * @generated from message scrabble.edge.v1.ExecuteRequest
+ */
+export type ExecuteRequest = Message<"scrabble.edge.v1.ExecuteRequest"> & {
+  /**
+   * @generated from field: string message_type = 1;
+   */
+  messageType: string;
+
+  /**
+   * @generated from field: bytes payload = 2;
+   */
+  payload: Uint8Array;
+
+  /**
+   * @generated from field: string request_id = 3;
+   */
+  requestId: string;
+};
+
+/**
+ * Describes the message scrabble.edge.v1.ExecuteRequest.
+ * Use `create(ExecuteRequestSchema)` to create a new message.
+ */
+export const ExecuteRequestSchema: GenMessage<ExecuteRequest> = /*@__PURE__*/
+  messageDesc(file_edge_v1_edge, 0);
+
+/**
+ * ExecuteResponse is the unary reply. result_code is "ok" on success or a stable
+ * error code; payload is the FlatBuffers-encoded response body (empty on error).
+ *
+ * @generated from message scrabble.edge.v1.ExecuteResponse
+ */
+export type ExecuteResponse = Message<"scrabble.edge.v1.ExecuteResponse"> & {
+  /**
+   * @generated from field: string request_id = 1;
+   */
+  requestId: string;
+
+  /**
+   * @generated from field: string result_code = 2;
+   */
+  resultCode: string;
+
+  /**
+   * @generated from field: bytes payload = 3;
+   */
+  payload: Uint8Array;
+};
+
+/**
+ * Describes the message scrabble.edge.v1.ExecuteResponse.
+ * Use `create(ExecuteResponseSchema)` to create a new message.
+ */
+export const ExecuteResponseSchema: GenMessage<ExecuteResponse> = /*@__PURE__*/
+  messageDesc(file_edge_v1_edge, 1);
+
+/**
+ * SubscribeRequest opens the live stream. It is empty: the session is taken from
+ * the Authorization header.
+ *
+ * @generated from message scrabble.edge.v1.SubscribeRequest
+ */
+export type SubscribeRequest = Message<"scrabble.edge.v1.SubscribeRequest"> & {
+};
+
+/**
+ * Describes the message scrabble.edge.v1.SubscribeRequest.
+ * Use `create(SubscribeRequestSchema)` to create a new message.
+ */
+export const SubscribeRequestSchema: GenMessage<SubscribeRequest> = /*@__PURE__*/
+  messageDesc(file_edge_v1_edge, 2);
+
+/**
+ * Event is one live event. kind is the notification catalog kind; payload is its
+ * FlatBuffers-encoded body; event_id is a correlation id.
+ *
+ * @generated from message scrabble.edge.v1.Event
+ */
+export type Event = Message<"scrabble.edge.v1.Event"> & {
+  /**
+   * @generated from field: string kind = 1;
+   */
+  kind: string;
+
+  /**
+   * @generated from field: bytes payload = 2;
+   */
+  payload: Uint8Array;
+
+  /**
+   * @generated from field: string event_id = 3;
+   */
+  eventId: string;
+};
+
+/**
+ * Describes the message scrabble.edge.v1.Event.
+ * Use `create(EventSchema)` to create a new message.
+ */
+export const EventSchema: GenMessage<Event> = /*@__PURE__*/
+  messageDesc(file_edge_v1_edge, 3);
+
+/**
+ * Gateway is the public edge service.
+ *
+ * @generated from service scrabble.edge.v1.Gateway
+ */
+export const Gateway: GenService<{
+  /**
+   * Execute runs one unary operation identified by message_type. Auth operations
+   * (auth.*) are unauthenticated and return a minted session; all others require
+   * a valid session token in the Authorization header.
+   *
+   * @generated from rpc scrabble.edge.v1.Gateway.Execute
+   */
+  execute: {
+    methodKind: "unary";
+    input: typeof ExecuteRequestSchema;
+    output: typeof ExecuteResponseSchema;
+  },
+  /**
+   * Subscribe opens the in-app live-event stream for the authenticated session.
+   *
+   * @generated from rpc scrabble.edge.v1.Gateway.Subscribe
+   */
+  subscribe: {
+    methodKind: "server_streaming";
+    input: typeof SubscribeRequestSchema;
+    output: typeof EventSchema;
+  },
+}> = /*@__PURE__*/
+  serviceDesc(file_edge_v1_edge, 0);
+

ui/src/gen/fbs/scrabble.ts

@@ -0,0 +1,3 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+export * as scrabblefb from './scrabblefb.js';

ui/src/gen/fbs/scrabblefb.ts

@@ -0,0 +1,36 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+export { Ack } from './scrabblefb/ack.js';
+export { ChatList } from './scrabblefb/chat-list.js';
+export { ChatMessage } from './scrabblefb/chat-message.js';
+export { ChatPostRequest } from './scrabblefb/chat-post-request.js';
+export { CheckWordRequest } from './scrabblefb/check-word-request.js';
+export { ComplaintRequest } from './scrabblefb/complaint-request.js';
+export { EmailLoginRequest } from './scrabblefb/email-login-request.js';
+export { EmailRequestRequest } from './scrabblefb/email-request-request.js';
+export { EnqueueRequest } from './scrabblefb/enqueue-request.js';
+export { EvalRequest } from './scrabblefb/eval-request.js';
+export { EvalResult } from './scrabblefb/eval-result.js';
+export { ExchangeRequest } from './scrabblefb/exchange-request.js';
+export { GameActionRequest } from './scrabblefb/game-action-request.js';
+export { GameList } from './scrabblefb/game-list.js';
+export { GameView } from './scrabblefb/game-view.js';
+export { GuestLoginRequest } from './scrabblefb/guest-login-request.js';
+export { HintResult } from './scrabblefb/hint-result.js';
+export { History } from './scrabblefb/history.js';
+export { MatchFoundEvent } from './scrabblefb/match-found-event.js';
+export { MatchResult } from './scrabblefb/match-result.js';
+export { MoveRecord } from './scrabblefb/move-record.js';
+export { MoveResult } from './scrabblefb/move-result.js';
+export { NudgeEvent } from './scrabblefb/nudge-event.js';
+export { OpponentMovedEvent } from './scrabblefb/opponent-moved-event.js';
+export { Profile } from './scrabblefb/profile.js';
+export { SeatView } from './scrabblefb/seat-view.js';
+export { Session } from './scrabblefb/session.js';
+export { StateRequest } from './scrabblefb/state-request.js';
+export { StateView } from './scrabblefb/state-view.js';
+export { SubmitPlayRequest } from './scrabblefb/submit-play-request.js';
+export { TelegramLoginRequest } from './scrabblefb/telegram-login-request.js';
+export { TileRecord } from './scrabblefb/tile-record.js';
+export { WordCheckResult } from './scrabblefb/word-check-result.js';
+export { YourTurnEvent } from './scrabblefb/your-turn-event.js';

ui/src/gen/fbs/scrabblefb/ack.ts

@@ -0,0 +1,46 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class Ack {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):Ack {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsAck(bb:flatbuffers.ByteBuffer, obj?:Ack):Ack {
+  return (obj || new Ack()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsAck(bb:flatbuffers.ByteBuffer, obj?:Ack):Ack {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Ack()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+ok():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+static startAck(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addOk(builder:flatbuffers.Builder, ok:boolean) {
+  builder.addFieldInt8(0, +ok, +false);
+}
+
+static endAck(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createAck(builder:flatbuffers.Builder, ok:boolean):flatbuffers.Offset {
+  Ack.startAck(builder);
+  Ack.addOk(builder, ok);
+  return Ack.endAck(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/chat-list.ts

@@ -0,0 +1,66 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { ChatMessage } from '../scrabblefb/chat-message.js';
+
+
+export class ChatList {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):ChatList {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsChatList(bb:flatbuffers.ByteBuffer, obj?:ChatList):ChatList {
+  return (obj || new ChatList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsChatList(bb:flatbuffers.ByteBuffer, obj?:ChatList):ChatList {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new ChatList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+messages(index: number, obj?:ChatMessage):ChatMessage|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? (obj || new ChatMessage()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+messagesLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+static startChatList(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addMessages(builder:flatbuffers.Builder, messagesOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, messagesOffset, 0);
+}
+
+static createMessagesVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startMessagesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endChatList(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createChatList(builder:flatbuffers.Builder, messagesOffset:flatbuffers.Offset):flatbuffers.Offset {
+  ChatList.startChatList(builder);
+  ChatList.addMessages(builder, messagesOffset);
+  return ChatList.endChatList(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/chat-message.ts

@@ -0,0 +1,106 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class ChatMessage {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):ChatMessage {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsChatMessage(bb:flatbuffers.ByteBuffer, obj?:ChatMessage):ChatMessage {
+  return (obj || new ChatMessage()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsChatMessage(bb:flatbuffers.ByteBuffer, obj?:ChatMessage):ChatMessage {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new ChatMessage()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+id():string|null
+id(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+id(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+senderId():string|null
+senderId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+senderId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+kind():string|null
+kind(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+kind(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+body():string|null
+body(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+body(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+createdAtUnix():bigint {
+  const offset = this.bb!.__offset(this.bb_pos, 14);
+  return offset ? this.bb!.readInt64(this.bb_pos + offset) : BigInt('0');
+}
+
+static startChatMessage(builder:flatbuffers.Builder) {
+  builder.startObject(6);
+}
+
+static addId(builder:flatbuffers.Builder, idOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, idOffset, 0);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, gameIdOffset, 0);
+}
+
+static addSenderId(builder:flatbuffers.Builder, senderIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, senderIdOffset, 0);
+}
+
+static addKind(builder:flatbuffers.Builder, kindOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(3, kindOffset, 0);
+}
+
+static addBody(builder:flatbuffers.Builder, bodyOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(4, bodyOffset, 0);
+}
+
+static addCreatedAtUnix(builder:flatbuffers.Builder, createdAtUnix:bigint) {
+  builder.addFieldInt64(5, createdAtUnix, BigInt('0'));
+}
+
+static endChatMessage(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createChatMessage(builder:flatbuffers.Builder, idOffset:flatbuffers.Offset, gameIdOffset:flatbuffers.Offset, senderIdOffset:flatbuffers.Offset, kindOffset:flatbuffers.Offset, bodyOffset:flatbuffers.Offset, createdAtUnix:bigint):flatbuffers.Offset {
+  ChatMessage.startChatMessage(builder);
+  ChatMessage.addId(builder, idOffset);
+  ChatMessage.addGameId(builder, gameIdOffset);
+  ChatMessage.addSenderId(builder, senderIdOffset);
+  ChatMessage.addKind(builder, kindOffset);
+  ChatMessage.addBody(builder, bodyOffset);
+  ChatMessage.addCreatedAtUnix(builder, createdAtUnix);
+  return ChatMessage.endChatMessage(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/chat-post-request.ts

@@ -0,0 +1,60 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class ChatPostRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):ChatPostRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsChatPostRequest(bb:flatbuffers.ByteBuffer, obj?:ChatPostRequest):ChatPostRequest {
+  return (obj || new ChatPostRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsChatPostRequest(bb:flatbuffers.ByteBuffer, obj?:ChatPostRequest):ChatPostRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new ChatPostRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+body():string|null
+body(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+body(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startChatPostRequest(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static addBody(builder:flatbuffers.Builder, bodyOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, bodyOffset, 0);
+}
+
+static endChatPostRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createChatPostRequest(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset, bodyOffset:flatbuffers.Offset):flatbuffers.Offset {
+  ChatPostRequest.startChatPostRequest(builder);
+  ChatPostRequest.addGameId(builder, gameIdOffset);
+  ChatPostRequest.addBody(builder, bodyOffset);
+  return ChatPostRequest.endChatPostRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/check-word-request.ts

@@ -0,0 +1,60 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class CheckWordRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):CheckWordRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsCheckWordRequest(bb:flatbuffers.ByteBuffer, obj?:CheckWordRequest):CheckWordRequest {
+  return (obj || new CheckWordRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsCheckWordRequest(bb:flatbuffers.ByteBuffer, obj?:CheckWordRequest):CheckWordRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new CheckWordRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+word():string|null
+word(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+word(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startCheckWordRequest(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static addWord(builder:flatbuffers.Builder, wordOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, wordOffset, 0);
+}
+
+static endCheckWordRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createCheckWordRequest(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset, wordOffset:flatbuffers.Offset):flatbuffers.Offset {
+  CheckWordRequest.startCheckWordRequest(builder);
+  CheckWordRequest.addGameId(builder, gameIdOffset);
+  CheckWordRequest.addWord(builder, wordOffset);
+  return CheckWordRequest.endCheckWordRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/complaint-request.ts

@@ -0,0 +1,72 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class ComplaintRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):ComplaintRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsComplaintRequest(bb:flatbuffers.ByteBuffer, obj?:ComplaintRequest):ComplaintRequest {
+  return (obj || new ComplaintRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsComplaintRequest(bb:flatbuffers.ByteBuffer, obj?:ComplaintRequest):ComplaintRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new ComplaintRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+word():string|null
+word(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+word(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+note():string|null
+note(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+note(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startComplaintRequest(builder:flatbuffers.Builder) {
+  builder.startObject(3);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static addWord(builder:flatbuffers.Builder, wordOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, wordOffset, 0);
+}
+
+static addNote(builder:flatbuffers.Builder, noteOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, noteOffset, 0);
+}
+
+static endComplaintRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createComplaintRequest(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset, wordOffset:flatbuffers.Offset, noteOffset:flatbuffers.Offset):flatbuffers.Offset {
+  ComplaintRequest.startComplaintRequest(builder);
+  ComplaintRequest.addGameId(builder, gameIdOffset);
+  ComplaintRequest.addWord(builder, wordOffset);
+  ComplaintRequest.addNote(builder, noteOffset);
+  return ComplaintRequest.endComplaintRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/email-login-request.ts

@@ -0,0 +1,60 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class EmailLoginRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):EmailLoginRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsEmailLoginRequest(bb:flatbuffers.ByteBuffer, obj?:EmailLoginRequest):EmailLoginRequest {
+  return (obj || new EmailLoginRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsEmailLoginRequest(bb:flatbuffers.ByteBuffer, obj?:EmailLoginRequest):EmailLoginRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new EmailLoginRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+email():string|null
+email(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+email(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+code():string|null
+code(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+code(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startEmailLoginRequest(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addEmail(builder:flatbuffers.Builder, emailOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, emailOffset, 0);
+}
+
+static addCode(builder:flatbuffers.Builder, codeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, codeOffset, 0);
+}
+
+static endEmailLoginRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createEmailLoginRequest(builder:flatbuffers.Builder, emailOffset:flatbuffers.Offset, codeOffset:flatbuffers.Offset):flatbuffers.Offset {
+  EmailLoginRequest.startEmailLoginRequest(builder);
+  EmailLoginRequest.addEmail(builder, emailOffset);
+  EmailLoginRequest.addCode(builder, codeOffset);
+  return EmailLoginRequest.endEmailLoginRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/email-request-request.ts

@@ -0,0 +1,48 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class EmailRequestRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):EmailRequestRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsEmailRequestRequest(bb:flatbuffers.ByteBuffer, obj?:EmailRequestRequest):EmailRequestRequest {
+  return (obj || new EmailRequestRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsEmailRequestRequest(bb:flatbuffers.ByteBuffer, obj?:EmailRequestRequest):EmailRequestRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new EmailRequestRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+email():string|null
+email(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+email(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startEmailRequestRequest(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addEmail(builder:flatbuffers.Builder, emailOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, emailOffset, 0);
+}
+
+static endEmailRequestRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createEmailRequestRequest(builder:flatbuffers.Builder, emailOffset:flatbuffers.Offset):flatbuffers.Offset {
+  EmailRequestRequest.startEmailRequestRequest(builder);
+  EmailRequestRequest.addEmail(builder, emailOffset);
+  return EmailRequestRequest.endEmailRequestRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/enqueue-request.ts

@@ -0,0 +1,48 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class EnqueueRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):EnqueueRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsEnqueueRequest(bb:flatbuffers.ByteBuffer, obj?:EnqueueRequest):EnqueueRequest {
+  return (obj || new EnqueueRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsEnqueueRequest(bb:flatbuffers.ByteBuffer, obj?:EnqueueRequest):EnqueueRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new EnqueueRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+variant():string|null
+variant(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+variant(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startEnqueueRequest(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addVariant(builder:flatbuffers.Builder, variantOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, variantOffset, 0);
+}
+
+static endEnqueueRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createEnqueueRequest(builder:flatbuffers.Builder, variantOffset:flatbuffers.Offset):flatbuffers.Offset {
+  EnqueueRequest.startEnqueueRequest(builder);
+  EnqueueRequest.addVariant(builder, variantOffset);
+  return EnqueueRequest.endEnqueueRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/eval-request.ts

@@ -0,0 +1,90 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { TileRecord } from '../scrabblefb/tile-record.js';
+
+
+export class EvalRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):EvalRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsEvalRequest(bb:flatbuffers.ByteBuffer, obj?:EvalRequest):EvalRequest {
+  return (obj || new EvalRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsEvalRequest(bb:flatbuffers.ByteBuffer, obj?:EvalRequest):EvalRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new EvalRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+dir():string|null
+dir(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+dir(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+tiles(index: number, obj?:TileRecord):TileRecord|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? (obj || new TileRecord()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+tilesLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+static startEvalRequest(builder:flatbuffers.Builder) {
+  builder.startObject(3);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static addDir(builder:flatbuffers.Builder, dirOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, dirOffset, 0);
+}
+
+static addTiles(builder:flatbuffers.Builder, tilesOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, tilesOffset, 0);
+}
+
+static createTilesVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startTilesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endEvalRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createEvalRequest(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset, dirOffset:flatbuffers.Offset, tilesOffset:flatbuffers.Offset):flatbuffers.Offset {
+  EvalRequest.startEvalRequest(builder);
+  EvalRequest.addGameId(builder, gameIdOffset);
+  EvalRequest.addDir(builder, dirOffset);
+  EvalRequest.addTiles(builder, tilesOffset);
+  return EvalRequest.endEvalRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/eval-result.ts

@@ -0,0 +1,85 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class EvalResult {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):EvalResult {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsEvalResult(bb:flatbuffers.ByteBuffer, obj?:EvalResult):EvalResult {
+  return (obj || new EvalResult()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsEvalResult(bb:flatbuffers.ByteBuffer, obj?:EvalResult):EvalResult {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new EvalResult()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+legal():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+score():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+words(index: number):string
+words(index: number,optionalEncoding:flatbuffers.Encoding):string|Uint8Array
+words(index: number,optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__string(this.bb!.__vector(this.bb_pos + offset) + index * 4, optionalEncoding) : null;
+}
+
+wordsLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+static startEvalResult(builder:flatbuffers.Builder) {
+  builder.startObject(3);
+}
+
+static addLegal(builder:flatbuffers.Builder, legal:boolean) {
+  builder.addFieldInt8(0, +legal, +false);
+}
+
+static addScore(builder:flatbuffers.Builder, score:number) {
+  builder.addFieldInt32(1, score, 0);
+}
+
+static addWords(builder:flatbuffers.Builder, wordsOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, wordsOffset, 0);
+}
+
+static createWordsVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startWordsVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endEvalResult(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createEvalResult(builder:flatbuffers.Builder, legal:boolean, score:number, wordsOffset:flatbuffers.Offset):flatbuffers.Offset {
+  EvalResult.startEvalResult(builder);
+  EvalResult.addLegal(builder, legal);
+  EvalResult.addScore(builder, score);
+  EvalResult.addWords(builder, wordsOffset);
+  return EvalResult.endEvalResult(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/exchange-request.ts

@@ -0,0 +1,77 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class ExchangeRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):ExchangeRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsExchangeRequest(bb:flatbuffers.ByteBuffer, obj?:ExchangeRequest):ExchangeRequest {
+  return (obj || new ExchangeRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsExchangeRequest(bb:flatbuffers.ByteBuffer, obj?:ExchangeRequest):ExchangeRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new ExchangeRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+tiles(index: number):string
+tiles(index: number,optionalEncoding:flatbuffers.Encoding):string|Uint8Array
+tiles(index: number,optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb!.__vector(this.bb_pos + offset) + index * 4, optionalEncoding) : null;
+}
+
+tilesLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+static startExchangeRequest(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static addTiles(builder:flatbuffers.Builder, tilesOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, tilesOffset, 0);
+}
+
+static createTilesVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startTilesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endExchangeRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createExchangeRequest(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset, tilesOffset:flatbuffers.Offset):flatbuffers.Offset {
+  ExchangeRequest.startExchangeRequest(builder);
+  ExchangeRequest.addGameId(builder, gameIdOffset);
+  ExchangeRequest.addTiles(builder, tilesOffset);
+  return ExchangeRequest.endExchangeRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/game-action-request.ts

@@ -0,0 +1,48 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class GameActionRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):GameActionRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsGameActionRequest(bb:flatbuffers.ByteBuffer, obj?:GameActionRequest):GameActionRequest {
+  return (obj || new GameActionRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsGameActionRequest(bb:flatbuffers.ByteBuffer, obj?:GameActionRequest):GameActionRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new GameActionRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startGameActionRequest(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static endGameActionRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createGameActionRequest(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset):flatbuffers.Offset {
+  GameActionRequest.startGameActionRequest(builder);
+  GameActionRequest.addGameId(builder, gameIdOffset);
+  return GameActionRequest.endGameActionRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/game-list.ts

@@ -0,0 +1,66 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { GameView } from '../scrabblefb/game-view.js';
+
+
+export class GameList {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):GameList {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsGameList(bb:flatbuffers.ByteBuffer, obj?:GameList):GameList {
+  return (obj || new GameList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsGameList(bb:flatbuffers.ByteBuffer, obj?:GameList):GameList {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new GameList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+games(index: number, obj?:GameView):GameView|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? (obj || new GameView()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+gamesLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+static startGameList(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addGames(builder:flatbuffers.Builder, gamesOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gamesOffset, 0);
+}
+
+static createGamesVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startGamesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endGameList(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createGameList(builder:flatbuffers.Builder, gamesOffset:flatbuffers.Offset):flatbuffers.Offset {
+  GameList.startGameList(builder);
+  GameList.addGames(builder, gamesOffset);
+  return GameList.endGameList(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/game-view.ts

@@ -0,0 +1,166 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { SeatView } from '../scrabblefb/seat-view.js';
+
+
+export class GameView {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):GameView {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsGameView(bb:flatbuffers.ByteBuffer, obj?:GameView):GameView {
+  return (obj || new GameView()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsGameView(bb:flatbuffers.ByteBuffer, obj?:GameView):GameView {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new GameView()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+id():string|null
+id(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+id(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+variant():string|null
+variant(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+variant(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+dictVersion():string|null
+dictVersion(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+dictVersion(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+status():string|null
+status(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+status(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+players():number {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+toMove():number {
+  const offset = this.bb!.__offset(this.bb_pos, 14);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+turnTimeoutSecs():number {
+  const offset = this.bb!.__offset(this.bb_pos, 16);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+moveCount():number {
+  const offset = this.bb!.__offset(this.bb_pos, 18);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+endReason():string|null
+endReason(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+endReason(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 20);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+seats(index: number, obj?:SeatView):SeatView|null {
+  const offset = this.bb!.__offset(this.bb_pos, 22);
+  return offset ? (obj || new SeatView()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+seatsLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 22);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+static startGameView(builder:flatbuffers.Builder) {
+  builder.startObject(10);
+}
+
+static addId(builder:flatbuffers.Builder, idOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, idOffset, 0);
+}
+
+static addVariant(builder:flatbuffers.Builder, variantOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, variantOffset, 0);
+}
+
+static addDictVersion(builder:flatbuffers.Builder, dictVersionOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, dictVersionOffset, 0);
+}
+
+static addStatus(builder:flatbuffers.Builder, statusOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(3, statusOffset, 0);
+}
+
+static addPlayers(builder:flatbuffers.Builder, players:number) {
+  builder.addFieldInt32(4, players, 0);
+}
+
+static addToMove(builder:flatbuffers.Builder, toMove:number) {
+  builder.addFieldInt32(5, toMove, 0);
+}
+
+static addTurnTimeoutSecs(builder:flatbuffers.Builder, turnTimeoutSecs:number) {
+  builder.addFieldInt32(6, turnTimeoutSecs, 0);
+}
+
+static addMoveCount(builder:flatbuffers.Builder, moveCount:number) {
+  builder.addFieldInt32(7, moveCount, 0);
+}
+
+static addEndReason(builder:flatbuffers.Builder, endReasonOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(8, endReasonOffset, 0);
+}
+
+static addSeats(builder:flatbuffers.Builder, seatsOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(9, seatsOffset, 0);
+}
+
+static createSeatsVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startSeatsVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endGameView(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createGameView(builder:flatbuffers.Builder, idOffset:flatbuffers.Offset, variantOffset:flatbuffers.Offset, dictVersionOffset:flatbuffers.Offset, statusOffset:flatbuffers.Offset, players:number, toMove:number, turnTimeoutSecs:number, moveCount:number, endReasonOffset:flatbuffers.Offset, seatsOffset:flatbuffers.Offset):flatbuffers.Offset {
+  GameView.startGameView(builder);
+  GameView.addId(builder, idOffset);
+  GameView.addVariant(builder, variantOffset);
+  GameView.addDictVersion(builder, dictVersionOffset);
+  GameView.addStatus(builder, statusOffset);
+  GameView.addPlayers(builder, players);
+  GameView.addToMove(builder, toMove);
+  GameView.addTurnTimeoutSecs(builder, turnTimeoutSecs);
+  GameView.addMoveCount(builder, moveCount);
+  GameView.addEndReason(builder, endReasonOffset);
+  GameView.addSeats(builder, seatsOffset);
+  return GameView.endGameView(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/guest-login-request.ts

@@ -0,0 +1,48 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class GuestLoginRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):GuestLoginRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsGuestLoginRequest(bb:flatbuffers.ByteBuffer, obj?:GuestLoginRequest):GuestLoginRequest {
+  return (obj || new GuestLoginRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsGuestLoginRequest(bb:flatbuffers.ByteBuffer, obj?:GuestLoginRequest):GuestLoginRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new GuestLoginRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+locale():string|null
+locale(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+locale(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startGuestLoginRequest(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addLocale(builder:flatbuffers.Builder, localeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, localeOffset, 0);
+}
+
+static endGuestLoginRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createGuestLoginRequest(builder:flatbuffers.Builder, localeOffset:flatbuffers.Offset):flatbuffers.Offset {
+  GuestLoginRequest.startGuestLoginRequest(builder);
+  GuestLoginRequest.addLocale(builder, localeOffset);
+  return GuestLoginRequest.endGuestLoginRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/hint-result.ts

@@ -0,0 +1,59 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { MoveRecord } from '../scrabblefb/move-record.js';
+
+
+export class HintResult {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):HintResult {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsHintResult(bb:flatbuffers.ByteBuffer, obj?:HintResult):HintResult {
+  return (obj || new HintResult()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsHintResult(bb:flatbuffers.ByteBuffer, obj?:HintResult):HintResult {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new HintResult()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+move(obj?:MoveRecord):MoveRecord|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? (obj || new MoveRecord()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+hintsRemaining():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+static startHintResult(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addMove(builder:flatbuffers.Builder, moveOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, moveOffset, 0);
+}
+
+static addHintsRemaining(builder:flatbuffers.Builder, hintsRemaining:number) {
+  builder.addFieldInt32(1, hintsRemaining, 0);
+}
+
+static endHintResult(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createHintResult(builder:flatbuffers.Builder, moveOffset:flatbuffers.Offset, hintsRemaining:number):flatbuffers.Offset {
+  HintResult.startHintResult(builder);
+  HintResult.addMove(builder, moveOffset);
+  HintResult.addHintsRemaining(builder, hintsRemaining);
+  return HintResult.endHintResult(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/history.ts

@@ -0,0 +1,78 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { MoveRecord } from '../scrabblefb/move-record.js';
+
+
+export class History {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):History {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsHistory(bb:flatbuffers.ByteBuffer, obj?:History):History {
+  return (obj || new History()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsHistory(bb:flatbuffers.ByteBuffer, obj?:History):History {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new History()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+moves(index: number, obj?:MoveRecord):MoveRecord|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? (obj || new MoveRecord()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+movesLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+static startHistory(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static addMoves(builder:flatbuffers.Builder, movesOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, movesOffset, 0);
+}
+
+static createMovesVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startMovesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endHistory(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createHistory(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset, movesOffset:flatbuffers.Offset):flatbuffers.Offset {
+  History.startHistory(builder);
+  History.addGameId(builder, gameIdOffset);
+  History.addMoves(builder, movesOffset);
+  return History.endHistory(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/match-found-event.ts

@@ -0,0 +1,48 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class MatchFoundEvent {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):MatchFoundEvent {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsMatchFoundEvent(bb:flatbuffers.ByteBuffer, obj?:MatchFoundEvent):MatchFoundEvent {
+  return (obj || new MatchFoundEvent()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsMatchFoundEvent(bb:flatbuffers.ByteBuffer, obj?:MatchFoundEvent):MatchFoundEvent {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new MatchFoundEvent()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startMatchFoundEvent(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static endMatchFoundEvent(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createMatchFoundEvent(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset):flatbuffers.Offset {
+  MatchFoundEvent.startMatchFoundEvent(builder);
+  MatchFoundEvent.addGameId(builder, gameIdOffset);
+  return MatchFoundEvent.endMatchFoundEvent(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/match-result.ts

@@ -0,0 +1,53 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { GameView } from '../scrabblefb/game-view.js';
+
+
+export class MatchResult {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):MatchResult {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsMatchResult(bb:flatbuffers.ByteBuffer, obj?:MatchResult):MatchResult {
+  return (obj || new MatchResult()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsMatchResult(bb:flatbuffers.ByteBuffer, obj?:MatchResult):MatchResult {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new MatchResult()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+matched():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+game(obj?:GameView):GameView|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? (obj || new GameView()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+static startMatchResult(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addMatched(builder:flatbuffers.Builder, matched:boolean) {
+  builder.addFieldInt8(0, +matched, +false);
+}
+
+static addGame(builder:flatbuffers.Builder, gameOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, gameOffset, 0);
+}
+
+static endMatchResult(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+}

ui/src/gen/fbs/scrabblefb/move-record.ts

@@ -0,0 +1,179 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { TileRecord } from '../scrabblefb/tile-record.js';
+
+
+export class MoveRecord {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):MoveRecord {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsMoveRecord(bb:flatbuffers.ByteBuffer, obj?:MoveRecord):MoveRecord {
+  return (obj || new MoveRecord()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsMoveRecord(bb:flatbuffers.ByteBuffer, obj?:MoveRecord):MoveRecord {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new MoveRecord()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+player():number {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+action():string|null
+action(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+action(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+dir():string|null
+dir(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+dir(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+mainRow():number {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+mainCol():number {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+tiles(index: number, obj?:TileRecord):TileRecord|null {
+  const offset = this.bb!.__offset(this.bb_pos, 14);
+  return offset ? (obj || new TileRecord()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+tilesLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 14);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+words(index: number):string
+words(index: number,optionalEncoding:flatbuffers.Encoding):string|Uint8Array
+words(index: number,optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 16);
+  return offset ? this.bb!.__string(this.bb!.__vector(this.bb_pos + offset) + index * 4, optionalEncoding) : null;
+}
+
+wordsLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 16);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+count():number {
+  const offset = this.bb!.__offset(this.bb_pos, 18);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+score():number {
+  const offset = this.bb!.__offset(this.bb_pos, 20);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+total():number {
+  const offset = this.bb!.__offset(this.bb_pos, 22);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+static startMoveRecord(builder:flatbuffers.Builder) {
+  builder.startObject(10);
+}
+
+static addPlayer(builder:flatbuffers.Builder, player:number) {
+  builder.addFieldInt32(0, player, 0);
+}
+
+static addAction(builder:flatbuffers.Builder, actionOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, actionOffset, 0);
+}
+
+static addDir(builder:flatbuffers.Builder, dirOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, dirOffset, 0);
+}
+
+static addMainRow(builder:flatbuffers.Builder, mainRow:number) {
+  builder.addFieldInt32(3, mainRow, 0);
+}
+
+static addMainCol(builder:flatbuffers.Builder, mainCol:number) {
+  builder.addFieldInt32(4, mainCol, 0);
+}
+
+static addTiles(builder:flatbuffers.Builder, tilesOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(5, tilesOffset, 0);
+}
+
+static createTilesVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startTilesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static addWords(builder:flatbuffers.Builder, wordsOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(6, wordsOffset, 0);
+}
+
+static createWordsVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startWordsVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static addCount(builder:flatbuffers.Builder, count:number) {
+  builder.addFieldInt32(7, count, 0);
+}
+
+static addScore(builder:flatbuffers.Builder, score:number) {
+  builder.addFieldInt32(8, score, 0);
+}
+
+static addTotal(builder:flatbuffers.Builder, total:number) {
+  builder.addFieldInt32(9, total, 0);
+}
+
+static endMoveRecord(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createMoveRecord(builder:flatbuffers.Builder, player:number, actionOffset:flatbuffers.Offset, dirOffset:flatbuffers.Offset, mainRow:number, mainCol:number, tilesOffset:flatbuffers.Offset, wordsOffset:flatbuffers.Offset, count:number, score:number, total:number):flatbuffers.Offset {
+  MoveRecord.startMoveRecord(builder);
+  MoveRecord.addPlayer(builder, player);
+  MoveRecord.addAction(builder, actionOffset);
+  MoveRecord.addDir(builder, dirOffset);
+  MoveRecord.addMainRow(builder, mainRow);
+  MoveRecord.addMainCol(builder, mainCol);
+  MoveRecord.addTiles(builder, tilesOffset);
+  MoveRecord.addWords(builder, wordsOffset);
+  MoveRecord.addCount(builder, count);
+  MoveRecord.addScore(builder, score);
+  MoveRecord.addTotal(builder, total);
+  return MoveRecord.endMoveRecord(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/move-result.ts

@@ -0,0 +1,54 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { GameView } from '../scrabblefb/game-view.js';
+import { MoveRecord } from '../scrabblefb/move-record.js';
+
+
+export class MoveResult {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):MoveResult {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsMoveResult(bb:flatbuffers.ByteBuffer, obj?:MoveResult):MoveResult {
+  return (obj || new MoveResult()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsMoveResult(bb:flatbuffers.ByteBuffer, obj?:MoveResult):MoveResult {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new MoveResult()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+move(obj?:MoveRecord):MoveRecord|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? (obj || new MoveRecord()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+game(obj?:GameView):GameView|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? (obj || new GameView()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+static startMoveResult(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addMove(builder:flatbuffers.Builder, moveOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, moveOffset, 0);
+}
+
+static addGame(builder:flatbuffers.Builder, gameOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, gameOffset, 0);
+}
+
+static endMoveResult(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+}

ui/src/gen/fbs/scrabblefb/nudge-event.ts

@@ -0,0 +1,60 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class NudgeEvent {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):NudgeEvent {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsNudgeEvent(bb:flatbuffers.ByteBuffer, obj?:NudgeEvent):NudgeEvent {
+  return (obj || new NudgeEvent()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsNudgeEvent(bb:flatbuffers.ByteBuffer, obj?:NudgeEvent):NudgeEvent {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new NudgeEvent()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+fromUserId():string|null
+fromUserId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+fromUserId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startNudgeEvent(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static addFromUserId(builder:flatbuffers.Builder, fromUserIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, fromUserIdOffset, 0);
+}
+
+static endNudgeEvent(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createNudgeEvent(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset, fromUserIdOffset:flatbuffers.Offset):flatbuffers.Offset {
+  NudgeEvent.startNudgeEvent(builder);
+  NudgeEvent.addGameId(builder, gameIdOffset);
+  NudgeEvent.addFromUserId(builder, fromUserIdOffset);
+  return NudgeEvent.endNudgeEvent(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/opponent-moved-event.ts

@@ -0,0 +1,90 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class OpponentMovedEvent {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):OpponentMovedEvent {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsOpponentMovedEvent(bb:flatbuffers.ByteBuffer, obj?:OpponentMovedEvent):OpponentMovedEvent {
+  return (obj || new OpponentMovedEvent()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsOpponentMovedEvent(bb:flatbuffers.ByteBuffer, obj?:OpponentMovedEvent):OpponentMovedEvent {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new OpponentMovedEvent()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+seat():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+action():string|null
+action(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+action(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+score():number {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+total():number {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+static startOpponentMovedEvent(builder:flatbuffers.Builder) {
+  builder.startObject(5);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static addSeat(builder:flatbuffers.Builder, seat:number) {
+  builder.addFieldInt32(1, seat, 0);
+}
+
+static addAction(builder:flatbuffers.Builder, actionOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, actionOffset, 0);
+}
+
+static addScore(builder:flatbuffers.Builder, score:number) {
+  builder.addFieldInt32(3, score, 0);
+}
+
+static addTotal(builder:flatbuffers.Builder, total:number) {
+  builder.addFieldInt32(4, total, 0);
+}
+
+static endOpponentMovedEvent(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createOpponentMovedEvent(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset, seat:number, actionOffset:flatbuffers.Offset, score:number, total:number):flatbuffers.Offset {
+  OpponentMovedEvent.startOpponentMovedEvent(builder);
+  OpponentMovedEvent.addGameId(builder, gameIdOffset);
+  OpponentMovedEvent.addSeat(builder, seat);
+  OpponentMovedEvent.addAction(builder, actionOffset);
+  OpponentMovedEvent.addScore(builder, score);
+  OpponentMovedEvent.addTotal(builder, total);
+  return OpponentMovedEvent.endOpponentMovedEvent(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/profile.ts

@@ -0,0 +1,124 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class Profile {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):Profile {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsProfile(bb:flatbuffers.ByteBuffer, obj?:Profile):Profile {
+  return (obj || new Profile()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsProfile(bb:flatbuffers.ByteBuffer, obj?:Profile):Profile {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Profile()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+userId():string|null
+userId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+userId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+displayName():string|null
+displayName(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+displayName(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+preferredLanguage():string|null
+preferredLanguage(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+preferredLanguage(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+timeZone():string|null
+timeZone(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+timeZone(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+hintBalance():number {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+blockChat():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 14);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+blockFriendRequests():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 16);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+isGuest():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 18);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+static startProfile(builder:flatbuffers.Builder) {
+  builder.startObject(8);
+}
+
+static addUserId(builder:flatbuffers.Builder, userIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, userIdOffset, 0);
+}
+
+static addDisplayName(builder:flatbuffers.Builder, displayNameOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, displayNameOffset, 0);
+}
+
+static addPreferredLanguage(builder:flatbuffers.Builder, preferredLanguageOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, preferredLanguageOffset, 0);
+}
+
+static addTimeZone(builder:flatbuffers.Builder, timeZoneOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(3, timeZoneOffset, 0);
+}
+
+static addHintBalance(builder:flatbuffers.Builder, hintBalance:number) {
+  builder.addFieldInt32(4, hintBalance, 0);
+}
+
+static addBlockChat(builder:flatbuffers.Builder, blockChat:boolean) {
+  builder.addFieldInt8(5, +blockChat, +false);
+}
+
+static addBlockFriendRequests(builder:flatbuffers.Builder, blockFriendRequests:boolean) {
+  builder.addFieldInt8(6, +blockFriendRequests, +false);
+}
+
+static addIsGuest(builder:flatbuffers.Builder, isGuest:boolean) {
+  builder.addFieldInt8(7, +isGuest, +false);
+}
+
+static endProfile(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createProfile(builder:flatbuffers.Builder, userIdOffset:flatbuffers.Offset, displayNameOffset:flatbuffers.Offset, preferredLanguageOffset:flatbuffers.Offset, timeZoneOffset:flatbuffers.Offset, hintBalance:number, blockChat:boolean, blockFriendRequests:boolean, isGuest:boolean):flatbuffers.Offset {
+  Profile.startProfile(builder);
+  Profile.addUserId(builder, userIdOffset);
+  Profile.addDisplayName(builder, displayNameOffset);
+  Profile.addPreferredLanguage(builder, preferredLanguageOffset);
+  Profile.addTimeZone(builder, timeZoneOffset);
+  Profile.addHintBalance(builder, hintBalance);
+  Profile.addBlockChat(builder, blockChat);
+  Profile.addBlockFriendRequests(builder, blockFriendRequests);
+  Profile.addIsGuest(builder, isGuest);
+  return Profile.endProfile(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/seat-view.ts

@@ -0,0 +1,100 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class SeatView {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):SeatView {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsSeatView(bb:flatbuffers.ByteBuffer, obj?:SeatView):SeatView {
+  return (obj || new SeatView()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsSeatView(bb:flatbuffers.ByteBuffer, obj?:SeatView):SeatView {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new SeatView()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+seat():number {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+accountId():string|null
+accountId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+accountId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+score():number {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+hintsUsed():number {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+isWinner():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+displayName():string|null
+displayName(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+displayName(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 14);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startSeatView(builder:flatbuffers.Builder) {
+  builder.startObject(6);
+}
+
+static addSeat(builder:flatbuffers.Builder, seat:number) {
+  builder.addFieldInt32(0, seat, 0);
+}
+
+static addAccountId(builder:flatbuffers.Builder, accountIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, accountIdOffset, 0);
+}
+
+static addScore(builder:flatbuffers.Builder, score:number) {
+  builder.addFieldInt32(2, score, 0);
+}
+
+static addHintsUsed(builder:flatbuffers.Builder, hintsUsed:number) {
+  builder.addFieldInt32(3, hintsUsed, 0);
+}
+
+static addIsWinner(builder:flatbuffers.Builder, isWinner:boolean) {
+  builder.addFieldInt8(4, +isWinner, +false);
+}
+
+static addDisplayName(builder:flatbuffers.Builder, displayNameOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(5, displayNameOffset, 0);
+}
+
+static endSeatView(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createSeatView(builder:flatbuffers.Builder, seat:number, accountIdOffset:flatbuffers.Offset, score:number, hintsUsed:number, isWinner:boolean, displayNameOffset:flatbuffers.Offset):flatbuffers.Offset {
+  SeatView.startSeatView(builder);
+  SeatView.addSeat(builder, seat);
+  SeatView.addAccountId(builder, accountIdOffset);
+  SeatView.addScore(builder, score);
+  SeatView.addHintsUsed(builder, hintsUsed);
+  SeatView.addIsWinner(builder, isWinner);
+  SeatView.addDisplayName(builder, displayNameOffset);
+  return SeatView.endSeatView(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/session.ts

@@ -0,0 +1,82 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class Session {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):Session {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsSession(bb:flatbuffers.ByteBuffer, obj?:Session):Session {
+  return (obj || new Session()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsSession(bb:flatbuffers.ByteBuffer, obj?:Session):Session {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Session()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+token():string|null
+token(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+token(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+userId():string|null
+userId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+userId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+isGuest():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+displayName():string|null
+displayName(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+displayName(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startSession(builder:flatbuffers.Builder) {
+  builder.startObject(4);
+}
+
+static addToken(builder:flatbuffers.Builder, tokenOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, tokenOffset, 0);
+}
+
+static addUserId(builder:flatbuffers.Builder, userIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, userIdOffset, 0);
+}
+
+static addIsGuest(builder:flatbuffers.Builder, isGuest:boolean) {
+  builder.addFieldInt8(2, +isGuest, +false);
+}
+
+static addDisplayName(builder:flatbuffers.Builder, displayNameOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(3, displayNameOffset, 0);
+}
+
+static endSession(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createSession(builder:flatbuffers.Builder, tokenOffset:flatbuffers.Offset, userIdOffset:flatbuffers.Offset, isGuest:boolean, displayNameOffset:flatbuffers.Offset):flatbuffers.Offset {
+  Session.startSession(builder);
+  Session.addToken(builder, tokenOffset);
+  Session.addUserId(builder, userIdOffset);
+  Session.addIsGuest(builder, isGuest);
+  Session.addDisplayName(builder, displayNameOffset);
+  return Session.endSession(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/state-request.ts

@@ -0,0 +1,48 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class StateRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):StateRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsStateRequest(bb:flatbuffers.ByteBuffer, obj?:StateRequest):StateRequest {
+  return (obj || new StateRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsStateRequest(bb:flatbuffers.ByteBuffer, obj?:StateRequest):StateRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new StateRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startStateRequest(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static endStateRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createStateRequest(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset):flatbuffers.Offset {
+  StateRequest.startStateRequest(builder);
+  StateRequest.addGameId(builder, gameIdOffset);
+  return StateRequest.endStateRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/state-view.ts

@@ -0,0 +1,108 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { GameView } from '../scrabblefb/game-view.js';
+
+
+export class StateView {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):StateView {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsStateView(bb:flatbuffers.ByteBuffer, obj?:StateView):StateView {
+  return (obj || new StateView()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsStateView(bb:flatbuffers.ByteBuffer, obj?:StateView):StateView {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new StateView()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+game(obj?:GameView):GameView|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? (obj || new GameView()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+seat():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+rack(index: number):string
+rack(index: number,optionalEncoding:flatbuffers.Encoding):string|Uint8Array
+rack(index: number,optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__string(this.bb!.__vector(this.bb_pos + offset) + index * 4, optionalEncoding) : null;
+}
+
+rackLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+bagLen():number {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+hintsRemaining():number {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+static startStateView(builder:flatbuffers.Builder) {
+  builder.startObject(5);
+}
+
+static addGame(builder:flatbuffers.Builder, gameOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameOffset, 0);
+}
+
+static addSeat(builder:flatbuffers.Builder, seat:number) {
+  builder.addFieldInt32(1, seat, 0);
+}
+
+static addRack(builder:flatbuffers.Builder, rackOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, rackOffset, 0);
+}
+
+static createRackVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startRackVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static addBagLen(builder:flatbuffers.Builder, bagLen:number) {
+  builder.addFieldInt32(3, bagLen, 0);
+}
+
+static addHintsRemaining(builder:flatbuffers.Builder, hintsRemaining:number) {
+  builder.addFieldInt32(4, hintsRemaining, 0);
+}
+
+static endStateView(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createStateView(builder:flatbuffers.Builder, gameOffset:flatbuffers.Offset, seat:number, rackOffset:flatbuffers.Offset, bagLen:number, hintsRemaining:number):flatbuffers.Offset {
+  StateView.startStateView(builder);
+  StateView.addGame(builder, gameOffset);
+  StateView.addSeat(builder, seat);
+  StateView.addRack(builder, rackOffset);
+  StateView.addBagLen(builder, bagLen);
+  StateView.addHintsRemaining(builder, hintsRemaining);
+  return StateView.endStateView(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/submit-play-request.ts

@@ -0,0 +1,90 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { TileRecord } from '../scrabblefb/tile-record.js';
+
+
+export class SubmitPlayRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):SubmitPlayRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsSubmitPlayRequest(bb:flatbuffers.ByteBuffer, obj?:SubmitPlayRequest):SubmitPlayRequest {
+  return (obj || new SubmitPlayRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsSubmitPlayRequest(bb:flatbuffers.ByteBuffer, obj?:SubmitPlayRequest):SubmitPlayRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new SubmitPlayRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+dir():string|null
+dir(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+dir(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+tiles(index: number, obj?:TileRecord):TileRecord|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? (obj || new TileRecord()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+tilesLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+static startSubmitPlayRequest(builder:flatbuffers.Builder) {
+  builder.startObject(3);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static addDir(builder:flatbuffers.Builder, dirOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, dirOffset, 0);
+}
+
+static addTiles(builder:flatbuffers.Builder, tilesOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, tilesOffset, 0);
+}
+
+static createTilesVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startTilesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endSubmitPlayRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createSubmitPlayRequest(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset, dirOffset:flatbuffers.Offset, tilesOffset:flatbuffers.Offset):flatbuffers.Offset {
+  SubmitPlayRequest.startSubmitPlayRequest(builder);
+  SubmitPlayRequest.addGameId(builder, gameIdOffset);
+  SubmitPlayRequest.addDir(builder, dirOffset);
+  SubmitPlayRequest.addTiles(builder, tilesOffset);
+  return SubmitPlayRequest.endSubmitPlayRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/telegram-login-request.ts

@@ -0,0 +1,48 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class TelegramLoginRequest {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):TelegramLoginRequest {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsTelegramLoginRequest(bb:flatbuffers.ByteBuffer, obj?:TelegramLoginRequest):TelegramLoginRequest {
+  return (obj || new TelegramLoginRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsTelegramLoginRequest(bb:flatbuffers.ByteBuffer, obj?:TelegramLoginRequest):TelegramLoginRequest {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new TelegramLoginRequest()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+initData():string|null
+initData(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+initData(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startTelegramLoginRequest(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addInitData(builder:flatbuffers.Builder, initDataOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, initDataOffset, 0);
+}
+
+static endTelegramLoginRequest(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createTelegramLoginRequest(builder:flatbuffers.Builder, initDataOffset:flatbuffers.Offset):flatbuffers.Offset {
+  TelegramLoginRequest.startTelegramLoginRequest(builder);
+  TelegramLoginRequest.addInitData(builder, initDataOffset);
+  return TelegramLoginRequest.endTelegramLoginRequest(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/tile-record.ts

@@ -0,0 +1,78 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class TileRecord {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):TileRecord {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsTileRecord(bb:flatbuffers.ByteBuffer, obj?:TileRecord):TileRecord {
+  return (obj || new TileRecord()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsTileRecord(bb:flatbuffers.ByteBuffer, obj?:TileRecord):TileRecord {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new TileRecord()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+row():number {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+col():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+letter():string|null
+letter(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+letter(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+blank():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+static startTileRecord(builder:flatbuffers.Builder) {
+  builder.startObject(4);
+}
+
+static addRow(builder:flatbuffers.Builder, row:number) {
+  builder.addFieldInt32(0, row, 0);
+}
+
+static addCol(builder:flatbuffers.Builder, col:number) {
+  builder.addFieldInt32(1, col, 0);
+}
+
+static addLetter(builder:flatbuffers.Builder, letterOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, letterOffset, 0);
+}
+
+static addBlank(builder:flatbuffers.Builder, blank:boolean) {
+  builder.addFieldInt8(3, +blank, +false);
+}
+
+static endTileRecord(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createTileRecord(builder:flatbuffers.Builder, row:number, col:number, letterOffset:flatbuffers.Offset, blank:boolean):flatbuffers.Offset {
+  TileRecord.startTileRecord(builder);
+  TileRecord.addRow(builder, row);
+  TileRecord.addCol(builder, col);
+  TileRecord.addLetter(builder, letterOffset);
+  TileRecord.addBlank(builder, blank);
+  return TileRecord.endTileRecord(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/word-check-result.ts

@@ -0,0 +1,58 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class WordCheckResult {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):WordCheckResult {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsWordCheckResult(bb:flatbuffers.ByteBuffer, obj?:WordCheckResult):WordCheckResult {
+  return (obj || new WordCheckResult()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsWordCheckResult(bb:flatbuffers.ByteBuffer, obj?:WordCheckResult):WordCheckResult {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new WordCheckResult()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+word():string|null
+word(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+word(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+legal():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+static startWordCheckResult(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addWord(builder:flatbuffers.Builder, wordOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, wordOffset, 0);
+}
+
+static addLegal(builder:flatbuffers.Builder, legal:boolean) {
+  builder.addFieldInt8(1, +legal, +false);
+}
+
+static endWordCheckResult(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createWordCheckResult(builder:flatbuffers.Builder, wordOffset:flatbuffers.Offset, legal:boolean):flatbuffers.Offset {
+  WordCheckResult.startWordCheckResult(builder);
+  WordCheckResult.addWord(builder, wordOffset);
+  WordCheckResult.addLegal(builder, legal);
+  return WordCheckResult.endWordCheckResult(builder);
+}
+}

ui/src/gen/fbs/scrabblefb/your-turn-event.ts

@@ -0,0 +1,58 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class YourTurnEvent {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+  __init(i:number, bb:flatbuffers.ByteBuffer):YourTurnEvent {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsYourTurnEvent(bb:flatbuffers.ByteBuffer, obj?:YourTurnEvent):YourTurnEvent {
+  return (obj || new YourTurnEvent()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsYourTurnEvent(bb:flatbuffers.ByteBuffer, obj?:YourTurnEvent):YourTurnEvent {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new YourTurnEvent()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+gameId():string|null
+gameId(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+gameId(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+deadlineUnix():bigint {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.readInt64(this.bb_pos + offset) : BigInt('0');
+}
+
+static startYourTurnEvent(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addGameId(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, gameIdOffset, 0);
+}
+
+static addDeadlineUnix(builder:flatbuffers.Builder, deadlineUnix:bigint) {
+  builder.addFieldInt64(1, deadlineUnix, BigInt('0'));
+}
+
+static endYourTurnEvent(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createYourTurnEvent(builder:flatbuffers.Builder, gameIdOffset:flatbuffers.Offset, deadlineUnix:bigint):flatbuffers.Offset {
+  YourTurnEvent.startYourTurnEvent(builder);
+  YourTurnEvent.addGameId(builder, gameIdOffset);
+  YourTurnEvent.addDeadlineUnix(builder, deadlineUnix);
+  return YourTurnEvent.endYourTurnEvent(builder);
+}
+}

ui/src/lib/codec.ts

@@ -0,0 +1,384 @@
+// FlatBuffers <-> domain-model codec. The real transport encodes each request table
+// and decodes each response/event table here, mirroring the gateway's Go encoders in
+// reverse. The screens only ever see the plain model (lib/model), never these wire
+// types.
+
+import { Builder, ByteBuffer, type Offset } from 'flatbuffers';
+import * as fb from '../gen/fbs/scrabblefb';
+import type { PlacedTile } from './client';
+import type {
+  ChatMessage,
+  EvalResult,
+  GameList,
+  GameView,
+  History,
+  HintResult,
+  MatchResult,
+  MoveRecord,
+  MoveResult,
+  Profile,
+  PushEvent,
+  Seat,
+  Session,
+  StateView,
+  Tile,
+  Variant,
+  WordCheckResult,
+} from './model';
+
+// --- request encoders ---
+
+function buildTile(b: Builder, t: PlacedTile): Offset {
+  const letter = b.createString(t.letter);
+  fb.TileRecord.startTileRecord(b);
+  fb.TileRecord.addRow(b, t.row);
+  fb.TileRecord.addCol(b, t.col);
+  fb.TileRecord.addLetter(b, letter);
+  fb.TileRecord.addBlank(b, t.blank);
+  return fb.TileRecord.endTileRecord(b);
+}
+
+function finish(b: Builder, root: Offset): Uint8Array {
+  b.finish(root);
+  return b.asUint8Array();
+}
+
+export const empty = (): Uint8Array => new Uint8Array();
+
+export function encodeGameAction(gameId: string): Uint8Array {
+  const b = new Builder(64);
+  const gid = b.createString(gameId);
+  fb.GameActionRequest.startGameActionRequest(b);
+  fb.GameActionRequest.addGameId(b, gid);
+  return finish(b, fb.GameActionRequest.endGameActionRequest(b));
+}
+
+export function encodeStateRequest(gameId: string): Uint8Array {
+  const b = new Builder(64);
+  const gid = b.createString(gameId);
+  fb.StateRequest.startStateRequest(b);
+  fb.StateRequest.addGameId(b, gid);
+  return finish(b, fb.StateRequest.endStateRequest(b));
+}
+
+export function encodeSubmitPlay(gameId: string, dir: 'H' | 'V', tiles: PlacedTile[]): Uint8Array {
+  const b = new Builder(256);
+  const tileOffs = tiles.map((t) => buildTile(b, t));
+  const vec = fb.SubmitPlayRequest.createTilesVector(b, tileOffs);
+  const gid = b.createString(gameId);
+  const d = b.createString(dir);
+  fb.SubmitPlayRequest.startSubmitPlayRequest(b);
+  fb.SubmitPlayRequest.addGameId(b, gid);
+  fb.SubmitPlayRequest.addDir(b, d);
+  fb.SubmitPlayRequest.addTiles(b, vec);
+  return finish(b, fb.SubmitPlayRequest.endSubmitPlayRequest(b));
+}
+
+export function encodeEval(gameId: string, dir: 'H' | 'V', tiles: PlacedTile[]): Uint8Array {
+  const b = new Builder(256);
+  const tileOffs = tiles.map((t) => buildTile(b, t));
+  const vec = fb.EvalRequest.createTilesVector(b, tileOffs);
+  const gid = b.createString(gameId);
+  const d = b.createString(dir);
+  fb.EvalRequest.startEvalRequest(b);
+  fb.EvalRequest.addGameId(b, gid);
+  fb.EvalRequest.addDir(b, d);
+  fb.EvalRequest.addTiles(b, vec);
+  return finish(b, fb.EvalRequest.endEvalRequest(b));
+}
+
+export function encodeExchange(gameId: string, tiles: string[]): Uint8Array {
+  const b = new Builder(128);
+  const offs = tiles.map((s) => b.createString(s));
+  const vec = fb.ExchangeRequest.createTilesVector(b, offs);
+  const gid = b.createString(gameId);
+  fb.ExchangeRequest.startExchangeRequest(b);
+  fb.ExchangeRequest.addGameId(b, gid);
+  fb.ExchangeRequest.addTiles(b, vec);
+  return finish(b, fb.ExchangeRequest.endExchangeRequest(b));
+}
+
+export function encodeCheckWord(gameId: string, word: string): Uint8Array {
+  const b = new Builder(128);
+  const gid = b.createString(gameId);
+  const w = b.createString(word);
+  fb.CheckWordRequest.startCheckWordRequest(b);
+  fb.CheckWordRequest.addGameId(b, gid);
+  fb.CheckWordRequest.addWord(b, w);
+  return finish(b, fb.CheckWordRequest.endCheckWordRequest(b));
+}
+
+export function encodeComplaint(gameId: string, word: string, note: string): Uint8Array {
+  const b = new Builder(256);
+  const gid = b.createString(gameId);
+  const w = b.createString(word);
+  const n = b.createString(note);
+  fb.ComplaintRequest.startComplaintRequest(b);
+  fb.ComplaintRequest.addGameId(b, gid);
+  fb.ComplaintRequest.addWord(b, w);
+  fb.ComplaintRequest.addNote(b, n);
+  return finish(b, fb.ComplaintRequest.endComplaintRequest(b));
+}
+
+export function encodeEnqueue(variant: Variant): Uint8Array {
+  const b = new Builder(64);
+  const v = b.createString(variant);
+  fb.EnqueueRequest.startEnqueueRequest(b);
+  fb.EnqueueRequest.addVariant(b, v);
+  return finish(b, fb.EnqueueRequest.endEnqueueRequest(b));
+}
+
+export function encodeChatPost(gameId: string, body: string): Uint8Array {
+  const b = new Builder(128);
+  const gid = b.createString(gameId);
+  const bd = b.createString(body);
+  fb.ChatPostRequest.startChatPostRequest(b);
+  fb.ChatPostRequest.addGameId(b, gid);
+  fb.ChatPostRequest.addBody(b, bd);
+  return finish(b, fb.ChatPostRequest.endChatPostRequest(b));
+}
+
+export function encodeGuestLogin(locale: string): Uint8Array {
+  const b = new Builder(64);
+  const l = b.createString(locale);
+  fb.GuestLoginRequest.startGuestLoginRequest(b);
+  fb.GuestLoginRequest.addLocale(b, l);
+  return finish(b, fb.GuestLoginRequest.endGuestLoginRequest(b));
+}
+
+export function encodeEmailRequest(email: string): Uint8Array {
+  const b = new Builder(128);
+  const e = b.createString(email);
+  fb.EmailRequestRequest.startEmailRequestRequest(b);
+  fb.EmailRequestRequest.addEmail(b, e);
+  return finish(b, fb.EmailRequestRequest.endEmailRequestRequest(b));
+}
+
+export function encodeEmailLogin(email: string, code: string): Uint8Array {
+  const b = new Builder(128);
+  const e = b.createString(email);
+  const c = b.createString(code);
+  fb.EmailLoginRequest.startEmailLoginRequest(b);
+  fb.EmailLoginRequest.addEmail(b, e);
+  fb.EmailLoginRequest.addCode(b, c);
+  return finish(b, fb.EmailLoginRequest.endEmailLoginRequest(b));
+}
+
+// --- response decoders ---
+
+function s(v: string | null): string {
+  return v ?? '';
+}
+
+function decodeTile(t: fb.TileRecord): Tile {
+  return { row: t.row(), col: t.col(), letter: s(t.letter()), blank: t.blank() };
+}
+
+function decodeSeat(v: fb.SeatView): Seat {
+  return {
+    seat: v.seat(),
+    accountId: s(v.accountId()),
+    displayName: s(v.displayName()),
+    score: v.score(),
+    hintsUsed: v.hintsUsed(),
+    isWinner: v.isWinner(),
+  };
+}
+
+function decodeGameView(g: fb.GameView): GameView {
+  const seats: Seat[] = [];
+  for (let i = 0; i < g.seatsLength(); i++) {
+    const sv = g.seats(i);
+    if (sv) seats.push(decodeSeat(sv));
+  }
+  return {
+    id: s(g.id()),
+    variant: s(g.variant()) as Variant,
+    dictVersion: s(g.dictVersion()),
+    status: s(g.status()),
+    players: g.players(),
+    toMove: g.toMove(),
+    turnTimeoutSecs: g.turnTimeoutSecs(),
+    moveCount: g.moveCount(),
+    endReason: s(g.endReason()),
+    seats,
+  };
+}
+
+function decodeMove(m: fb.MoveRecord): MoveRecord {
+  const tiles: Tile[] = [];
+  for (let i = 0; i < m.tilesLength(); i++) {
+    const t = m.tiles(i);
+    if (t) tiles.push(decodeTile(t));
+  }
+  const words: string[] = [];
+  for (let i = 0; i < m.wordsLength(); i++) words.push(s(m.words(i)));
+  return {
+    player: m.player(),
+    action: s(m.action()),
+    dir: s(m.dir()),
+    mainRow: m.mainRow(),
+    mainCol: m.mainCol(),
+    tiles,
+    words,
+    count: m.count(),
+    score: m.score(),
+    total: m.total(),
+  };
+}
+
+function decodeChatMsg(m: fb.ChatMessage): ChatMessage {
+  return {
+    id: s(m.id()),
+    gameId: s(m.gameId()),
+    senderId: s(m.senderId()),
+    kind: s(m.kind()),
+    body: s(m.body()),
+    createdAtUnix: Number(m.createdAtUnix()),
+  };
+}
+
+export function decodeSession(buf: Uint8Array): Session {
+  const t = fb.Session.getRootAsSession(new ByteBuffer(buf));
+  return { token: s(t.token()), userId: s(t.userId()), isGuest: t.isGuest(), displayName: s(t.displayName()) };
+}
+
+export function decodeProfile(buf: Uint8Array): Profile {
+  const p = fb.Profile.getRootAsProfile(new ByteBuffer(buf));
+  return {
+    userId: s(p.userId()),
+    displayName: s(p.displayName()),
+    preferredLanguage: s(p.preferredLanguage()),
+    timeZone: s(p.timeZone()),
+    hintBalance: p.hintBalance(),
+    blockChat: p.blockChat(),
+    blockFriendRequests: p.blockFriendRequests(),
+    isGuest: p.isGuest(),
+  };
+}
+
+export function decodeStateView(buf: Uint8Array): StateView {
+  const v = fb.StateView.getRootAsStateView(new ByteBuffer(buf));
+  const g = v.game();
+  const rack: string[] = [];
+  for (let i = 0; i < v.rackLength(); i++) rack.push(s(v.rack(i)));
+  return {
+    game: g ? decodeGameView(g) : emptyGame(),
+    seat: v.seat(),
+    rack,
+    bagLen: v.bagLen(),
+    hintsRemaining: v.hintsRemaining(),
+  };
+}
+
+export function decodeMoveResult(buf: Uint8Array): MoveResult {
+  const r = fb.MoveResult.getRootAsMoveResult(new ByteBuffer(buf));
+  const m = r.move();
+  const g = r.game();
+  return { move: m ? decodeMove(m) : emptyMove(), game: g ? decodeGameView(g) : emptyGame() };
+}
+
+export function decodeHintResult(buf: Uint8Array): HintResult {
+  const r = fb.HintResult.getRootAsHintResult(new ByteBuffer(buf));
+  const m = r.move();
+  return { move: m ? decodeMove(m) : emptyMove(), hintsRemaining: r.hintsRemaining() };
+}
+
+export function decodeEvalResult(buf: Uint8Array): EvalResult {
+  const r = fb.EvalResult.getRootAsEvalResult(new ByteBuffer(buf));
+  const words: string[] = [];
+  for (let i = 0; i < r.wordsLength(); i++) words.push(s(r.words(i)));
+  return { legal: r.legal(), score: r.score(), words };
+}
+
+export function decodeWordCheck(buf: Uint8Array): WordCheckResult {
+  const r = fb.WordCheckResult.getRootAsWordCheckResult(new ByteBuffer(buf));
+  return { word: s(r.word()), legal: r.legal() };
+}
+
+export function decodeHistory(buf: Uint8Array): History {
+  const h = fb.History.getRootAsHistory(new ByteBuffer(buf));
+  const moves: MoveRecord[] = [];
+  for (let i = 0; i < h.movesLength(); i++) {
+    const m = h.moves(i);
+    if (m) moves.push(decodeMove(m));
+  }
+  return { gameId: s(h.gameId()), moves };
+}
+
+export function decodeGameList(buf: Uint8Array): GameList {
+  const gl = fb.GameList.getRootAsGameList(new ByteBuffer(buf));
+  const games: GameView[] = [];
+  for (let i = 0; i < gl.gamesLength(); i++) {
+    const g = gl.games(i);
+    if (g) games.push(decodeGameView(g));
+  }
+  return { games };
+}
+
+export function decodeMatchResult(buf: Uint8Array): MatchResult {
+  const m = fb.MatchResult.getRootAsMatchResult(new ByteBuffer(buf));
+  const g = m.game();
+  return { matched: m.matched(), game: m.matched() && g ? decodeGameView(g) : undefined };
+}
+
+export function decodeChatMessage(buf: Uint8Array): ChatMessage {
+  return decodeChatMsg(fb.ChatMessage.getRootAsChatMessage(new ByteBuffer(buf)));
+}
+
+export function decodeChatList(buf: Uint8Array): ChatMessage[] {
+  const cl = fb.ChatList.getRootAsChatList(new ByteBuffer(buf));
+  const out: ChatMessage[] = [];
+  for (let i = 0; i < cl.messagesLength(); i++) {
+    const m = cl.messages(i);
+    if (m) out.push(decodeChatMsg(m));
+  }
+  return out;
+}
+
+export function decodeEvent(kind: string, payload: Uint8Array): PushEvent | null {
+  const bb = new ByteBuffer(payload);
+  switch (kind) {
+    case 'your_turn': {
+      const e = fb.YourTurnEvent.getRootAsYourTurnEvent(bb);
+      return { kind: 'your_turn', gameId: s(e.gameId()), deadlineUnix: Number(e.deadlineUnix()) };
+    }
+    case 'opponent_moved': {
+      const e = fb.OpponentMovedEvent.getRootAsOpponentMovedEvent(bb);
+      return { kind: 'opponent_moved', gameId: s(e.gameId()), seat: e.seat(), action: s(e.action()), score: e.score(), total: e.total() };
+    }
+    case 'chat_message':
+      return { kind: 'chat_message', message: decodeChatMsg(fb.ChatMessage.getRootAsChatMessage(bb)) };
+    case 'nudge': {
+      const e = fb.NudgeEvent.getRootAsNudgeEvent(bb);
+      return { kind: 'nudge', gameId: s(e.gameId()), fromUserId: s(e.fromUserId()) };
+    }
+    case 'match_found': {
+      const e = fb.MatchFoundEvent.getRootAsMatchFoundEvent(bb);
+      return { kind: 'match_found', gameId: s(e.gameId()) };
+    }
+    case 'heartbeat':
+      return { kind: 'heartbeat' };
+    default:
+      return null;
+  }
+}
+
+function emptyGame(): GameView {
+  return {
+    id: '',
+    variant: 'english',
+    dictVersion: '',
+    status: '',
+    players: 0,
+    toMove: 0,
+    turnTimeoutSecs: 0,
+    moveCount: 0,
+    endReason: '',
+    seats: [],
+  };
+}
+
+function emptyMove(): MoveRecord {
+  return { player: 0, action: '', dir: '', mainRow: 0, mainCol: 0, tiles: [], words: [], count: 0, score: 0, total: 0 };
+}

ui/src/lib/transport.ts

@@ -1,36 +1,137 @@
-// Placeholder for the real Connect-web + FlatBuffers transport, wired in the edge
-// codegen task. Until then, selecting a non-mock mode surfaces a clear error instead
-// of failing silently. The mock (lib/mock) backs `pnpm start`.
+// The real Connect-RPC + FlatBuffers transport. Every unary op rides the single
+// Execute envelope (message_type + FlatBuffers payload); the live stream is
+// Subscribe. The session token rides in the Authorization header; domain outcomes
+// come back in result_code, edge failures as Connect error codes — both normalised to
+// a thrown GatewayError. In dev the Vite proxy forwards the RPC path to the h2c
+// gateway; in a packaged app VITE_GATEWAY_URL points at the real origin.
 
-import type { GatewayClient } from './client';
-import { GatewayError } from './client';
+import { Code, ConnectError, createClient } from '@connectrpc/connect';
+import { createConnectTransport } from '@connectrpc/connect-web';
+import { Gateway } from '../gen/edge/v1/edge_pb';
+import { GatewayError, type GatewayClient } from './client';
+import * as codec from './codec';
+
+function toGatewayError(e: unknown): GatewayError {
+  if (e instanceof ConnectError) {
+    switch (e.code) {
+      case Code.Unauthenticated:
+        return new GatewayError('session_invalid', e.message);
+      case Code.ResourceExhausted:
+        return new GatewayError('rate_limited', e.message);
+      case Code.Unavailable:
+        return new GatewayError('unavailable', e.message);
+      case Code.NotFound:
+        return new GatewayError('not_found', e.message);
+      default:
+        return new GatewayError('internal', e.message);
+    }
+  }
+  return new GatewayError('unavailable', String(e));
+}
+
+export function createTransport(baseUrl: string): GatewayClient {
+  const origin = baseUrl || (typeof location !== 'undefined' ? location.origin : '');
+  const transport = createConnectTransport({ baseUrl: origin, useBinaryFormat: true });
+  const client = createClient(Gateway, transport);
+  let token: string | null = null;
+
+  const headers = (): Record<string, string> | undefined =>
+    token ? { authorization: `Bearer ${token}` } : undefined;
+
+  async function exec(messageType: string, payload: Uint8Array): Promise<Uint8Array> {
+    let res;
+    try {
+      res = await client.execute({ messageType, payload, requestId: '' }, { headers: headers() });
+    } catch (e) {
+      throw toGatewayError(e);
+    }
+    if (res.resultCode && res.resultCode !== 'ok') throw new GatewayError(res.resultCode);
+    return res.payload;
+  }
 
-export function createTransport(_baseUrl: string): GatewayClient {
-  const ni = (): never => {
-    throw new GatewayError('unavailable', 'real transport not wired yet');
-  };
   return {
-    setToken: () => {},
-    authGuest: ni,
-    authEmailRequest: ni,
-    authEmailLogin: ni,
-    profileGet: ni,
-    gamesList: ni,
-    lobbyEnqueue: ni,
-    lobbyPoll: ni,
-    gameState: ni,
-    gameHistory: ni,
-    submitPlay: ni,
-    pass: ni,
-    exchange: ni,
-    resign: ni,
-    hint: ni,
-    evaluate: ni,
-    checkWord: ni,
-    complaint: ni,
-    chatPost: ni,
-    chatList: ni,
-    nudge: ni,
-    subscribe: ni,
+    setToken(t) {
+      token = t;
+    },
+
+    async authGuest(locale) {
+      return codec.decodeSession(await exec('auth.guest', codec.encodeGuestLogin(locale ?? '')));
+    },
+    async authEmailRequest(email) {
+      await exec('auth.email.request', codec.encodeEmailRequest(email));
+    },
+    async authEmailLogin(email, code) {
+      return codec.decodeSession(await exec('auth.email.login', codec.encodeEmailLogin(email, code)));
+    },
+
+    async profileGet() {
+      return codec.decodeProfile(await exec('profile.get', codec.empty()));
+    },
+    async gamesList() {
+      return codec.decodeGameList(await exec('games.list', codec.empty()));
+    },
+
+    async lobbyEnqueue(variant) {
+      return codec.decodeMatchResult(await exec('lobby.enqueue', codec.encodeEnqueue(variant)));
+    },
+    async lobbyPoll() {
+      return codec.decodeMatchResult(await exec('lobby.poll', codec.empty()));
+    },
+
+    async gameState(id) {
+      return codec.decodeStateView(await exec('game.state', codec.encodeStateRequest(id)));
+    },
+    async gameHistory(id) {
+      return codec.decodeHistory(await exec('game.history', codec.encodeGameAction(id)));
+    },
+    async submitPlay(id, dir, tiles) {
+      return codec.decodeMoveResult(await exec('game.submit_play', codec.encodeSubmitPlay(id, dir, tiles)));
+    },
+    async pass(id) {
+      return codec.decodeMoveResult(await exec('game.pass', codec.encodeGameAction(id)));
+    },
+    async exchange(id, tiles) {
+      return codec.decodeMoveResult(await exec('game.exchange', codec.encodeExchange(id, tiles)));
+    },
+    async resign(id) {
+      return codec.decodeMoveResult(await exec('game.resign', codec.encodeGameAction(id)));
+    },
+    async hint(id) {
+      return codec.decodeHintResult(await exec('game.hint', codec.encodeGameAction(id)));
+    },
+    async evaluate(id, dir, tiles) {
+      return codec.decodeEvalResult(await exec('game.evaluate', codec.encodeEval(id, dir, tiles)));
+    },
+    async checkWord(id, word) {
+      return codec.decodeWordCheck(await exec('game.check_word', codec.encodeCheckWord(id, word)));
+    },
+    async complaint(id, word, note) {
+      await exec('game.complaint', codec.encodeComplaint(id, word, note));
+    },
+
+    async chatPost(id, body) {
+      return codec.decodeChatMessage(await exec('chat.post', codec.encodeChatPost(id, body)));
+    },
+    async chatList(id) {
+      return codec.decodeChatList(await exec('chat.list', codec.encodeGameAction(id)));
+    },
+    async nudge(id) {
+      return codec.decodeChatMessage(await exec('chat.nudge', codec.encodeGameAction(id)));
+    },
+
+    subscribe(onEvent, onError) {
+      const ctrl = new AbortController();
+      void (async () => {
+        try {
+          for await (const ev of client.subscribe({}, { headers: headers(), signal: ctrl.signal })) {
+            const pe = codec.decodeEvent(ev.kind, ev.payload);
+            if (pe) onEvent(pe);
+          }
+        } catch (e) {
+          if (!ctrl.signal.aborted) onError?.(toGatewayError(e));
+        }
+      })();
+      return () => ctrl.abort();
+    },
   };
 }