feat(server): moderator announces every move and attempt to both players

All move-event announcements in translator.ts and all attempted-move
announcements in commit.ts now use audience 'both' so the moderator
panel is a complete shared transcript for both players.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/server/src/commit.ts

@@ -37,7 +37,7 @@ export function handleCommit(game: Game, color: Color, msg: CommitInput): Commit
 
   const piece = game.chess.get(msg.from) as { color: Color; type: Piece['type'] } | false;
   if (!piece || piece.color !== color) {
-    return announceWith(game, 'no_such_piece', color);
+    return announceWith(game, 'no_such_piece');
   }
 
   const pseudo = geometricMoves(
@@ -46,12 +46,12 @@ export function handleCommit(game: Game, color: Color, msg: CommitInput): Commit
     ownSquares(game, color),
   );
   if (pseudo.length === 0) {
-    return announceWith(game, 'no_legal_moves', color);
+    return announceWith(game, 'no_legal_moves');
   }
 
   const legal = chessJsLegalFrom(game, msg.from);
   if (legal.length === 0) {
-    return announceWith(game, 'wont_help', color);
+    return announceWith(game, 'wont_help');
   }
 
   game.armed = { color, from: msg.from };
@@ -77,7 +77,7 @@ function tryMove(
   }
 
   if (!move) {
-    return announceWith(game, 'illegal_move', color);
+    return announceWith(game, 'illegal_move');
   }
 
   game.armed = null;
@@ -110,10 +110,10 @@ function tryMove(
 function announceWith(
   game: Game,
   text: 'no_such_piece' | 'no_legal_moves' | 'wont_help' | 'illegal_move',
-  color: Color,
 ): CommitResult {
   const ply = game.chess.history().length;
-  const a = announce(text, color, ply);
+  // Feature 1: attempted moves are announced to both players.
+  const a = announce(text, 'both', ply);
   game.announcements.push(a);
   return { kind: 'announce', announcements: [a] };
 }

packages/server/src/translator.ts

@@ -33,21 +33,22 @@ export function translateMove(game: Game, move: Move): Announcement[] {
   const isQueensideCastle = move.isQueensideCastle();
   const isProm = !!move.promotion;
 
-  // To opponent: the move event itself.
+  // To both players: the move event itself (Feature 1 — the moderator
+  // announces every move aloud; both players hear it).
   if (isKingsideCastle) {
-    out.push(announce(`${moverWord}_castled_kingside` as ModeratorText, opp, ply));
+    out.push(announce(`${moverWord}_castled_kingside` as ModeratorText, 'both', ply));
   } else if (isQueensideCastle) {
-    out.push(announce(`${moverWord}_castled_queenside` as ModeratorText, opp, ply));
+    out.push(announce(`${moverWord}_castled_queenside` as ModeratorText, 'both', ply));
   } else if (isCap && isEp) {
-    out.push(announce(`${moverWord}_moved_captured_ep` as ModeratorText, opp, ply));
+    out.push(announce(`${moverWord}_moved_captured_ep` as ModeratorText, 'both', ply));
   } else if (isCap) {
-    out.push(announce(`${moverWord}_moved_captured` as ModeratorText, opp, ply));
+    out.push(announce(`${moverWord}_moved_captured` as ModeratorText, 'both', ply));
   } else {
-    out.push(announce(`${moverWord}_moved` as ModeratorText, opp, ply));
+    out.push(announce(`${moverWord}_moved` as ModeratorText, 'both', ply));
   }
 
   if (isProm) {
-    out.push(announce(`${moverWord}_promoted` as ModeratorText, opp, ply, { promotedTo: move.promotion }));
+    out.push(announce(`${moverWord}_promoted` as ModeratorText, 'both', ply, { promotedTo: move.promotion }));
   }
 
   // To both: state changes.

packages/server/test/unit/commit-fsm.test.ts

@@ -74,6 +74,20 @@ describe('hierarchy decision table', () => {
     expect(game.armed).toBeNull();
     expect(game.chess.history()).toContain('e4');
   });
+
+  it('attempted-move announcements are audience: both', () => {
+    const r = handleCommit(game, 'w', { from: 'e4' }); // empty square -> no_such_piece
+    expect(r.kind).toBe('announce');
+    if (r.kind === 'announce') expect(r.announcements[0]!.audience).toBe('both');
+  });
+
+  it('applied-move announcements are audience: both', () => {
+    const r = handleCommit(game, 'w', { from: 'e2', to: 'e4' });
+    expect(r.kind).toBe('applied');
+    if (r.kind === 'applied') {
+      for (const a of r.announcements) expect(a.audience).toBe('both');
+    }
+  });
 });
 
 describe('touch-move enforcement', () => {