Feature 2 of post-epic-deferrals. Exposes extinction-chess's
configurable targetType through the in-game rules drawer so players
don't need to open devtools or call engine.presetState themselves.
UI:
- RulesDrawer.tsx renders a 'Target: <PieceType>' chip inside the
extinction-chess detail card when the preset is active.
Clicking advances through pawn -> knight -> bishop -> rook ->
queen -> king -> pawn (wraps). Plural labels ('Pawns', 'Knights',
...) for prose.
- data-testid='extinction-target-cycler' on the chip for e2e.
- New optional RulesDrawer props extinctionTarget +
onExtinctionTargetChange; omitted props hide the cycler (no
hard dependency on the engine).
Wiring (GameView.tsx):
- Solo-only per plan decision 2a. Multiplayer games use the
target set at room-creation time; the cycler doesn't render in
MP to avoid desync (a future preset-config.update WS message
could lift this; out of v1 scope).
- Local useState syncs with engine.presetState via a useEffect;
setExtinctionTarget writes back through the same state API and
calls refresh() so legal highlights + terminal-state panels
pick up the target flip.
Docs:
- extinction-chess.ts docblock updated to reference the shipped
UI surface + the MP deferral.
- PRESET-API.md post-landing backlog: remove the 'UI cycling'
deferral (now shipped), add the MP-target-sync deferral.
Tests:
- 2 new rule-variants.spec.ts cases: (a) cycler cycles through
all 6 labels when preset active, (b) cycler hidden when preset
inactive.
Verification: 1663 unit + 89/89 e2e (87 + 2 new). Typecheck + lint
clean.
Plan: .sisyphus/plans/post-epic-deferrals.md Feature 2 complete.
Phase F.4 of the rule-variants epic.
Three end-to-end scenarios covering the full lobby -> game flow:
1. knightmate: selecting the knightmate layout surfaces a
'Suggested rules' chip for knightmate-rules in LayoutPicker;
tapping activates the preset; Play Solo loads the game with
no console errors; a pawn push resolves normally.
2. double-move: in-game rules drawer shows a 'Multi-move'
category section (Phase F.3 grouping); toggling double-move
ON makes white play two consecutive half-moves before the
turn flips to black, verified by successful drags of two
white pieces followed by a black piece drag.
3. suicide-chess: after establishing a capture opportunity
(1. e4 d5), toggling suicide-chess on via the in-game rules
drawer. White's next move: a non-capture (a2-a3) is
rejected by filterLegalMoves; the compulsory capture
(e4xd5) succeeds.
Scenarios 2 and 3 toggle the preset via the IN-GAME drawer
(lives in GameView.tsx) rather than the lobby — Lobby.tsx has
no rules drawer; only the layout-picker chip path is available
pre-game. Scenario 1 exercises the chip path. Deferred:
lobby-side drawer is a follow-up if richer pre-game preset
activation UX is desired.
Tests: 1651 unit + 3 new e2e = 4-test file added to e2e suite.
All 3 pass.
