A GatewayClient-shaped facade over the offline engine, so the same game screen can drive
a local vs_ai game with no backend (the wiring into Game.svelte is B3.2).
- source.ts: LocalSource implements the game-loop subset (GameLoopSource) for a local game
id — gameState/gameHistory via replay, submitPlay/pass/exchange/resign apply the human
move then run the robot (decide(generateMoves)) synchronously, persisting both and
delivering the robot's move through a per-game event emitter (no live stream). hint is
gated to >30 min since the robot's last move; evaluate/checkWord are local. It translates
the UI's glyph space to the engine's index space with the static letters table.
- ruleset.ts: add the static per-variant letters (glyphs), pinned to the Go alphabet —
offline is now fully self-contained (no reliance on a warm server alphabet cache).
- engine.ts: submitPlay (infers the direction like the server SubmitPlay), evaluatePlay +
dictionaryHas for the move preview / word check, and record the main-word coordinate +
the words on a play (for the history MoveRecord).
- source.test.ts: create -> human pass -> synchronous robot reply via the event, the hint
gate, decoded history, and a whole game driven to completion.
Pure additive library code; no runtime behavior change (bundle unchanged).
Ilia Denisov