feat: add piece rotation/flip animations and UI sound feedback

Enhance Genius Square and Katamino with:
- Smooth piece rotation and flip animations (scale + rotate tweens)
- Pulsing outline glow on ghost piece preview
- New UI sound effects: pick, activate, flip, place, chime
- Music player support in both games
- Win chime with delayed overlay for better feedback
- Move Reset/Leave buttons to bottom in Katamino

public/src/games/geniussquare/GeniusSquareGame.js

@@ -84,7 +84,10 @@ export default class GeniusSquareGame extends Phaser.Scene {
 
     this.humanGridGfx     = null;
     this.aiGridGfx        = null;
-    this.traySlots        = [];   // [{ container, pieceId }]
+    this._pulseGfx           = null;
+    this._ghostAnimContainer = null;
+    this._ghostAnim          = null;
+    this.traySlots           = [];   // [{ container, pieceId }]
     this.opponentPortrait = null;
   }
 
@@ -124,6 +127,43 @@ export default class GeniusSquareGame extends Phaser.Scene {
     this._startCountdown();
   }
 
+  update(time) {
+    if (!this._pulseGfx || !this.ghostCells || !this.selectedPiece) {
+      this._pulseGfx?.clear();
+      return;
+    }
+
+    const cells    = this.ghostCells;
+    const pieceId  = this.selectedPiece.pieceId;
+    const alpha    = 0.35 + 0.65 * Math.abs(Math.sin(time * 0.004));
+    const allValid = cells.every(([r, c]) =>
+      r >= 0 && r < 6 && c >= 0 && c < 6 && this.humanBoard[r * 6 + c] === null
+    );
+    const color    = allValid ? (PIECE_COLORS[pieceId] ?? 0xffffff) : 0xff4444;
+    const ghostSet = new Set(cells.map(([r, c]) => `${r},${c}`));
+    const OFF      = 4;
+
+    this._pulseGfx.clear();
+    this._pulseGfx.lineStyle(5, color, alpha);
+
+    for (const [r, c] of cells) {
+      const x0 = HGX + c * CELL, y0 = HGY + r * CELL;
+      const x1 = x0 + CELL,      y1 = y0 + CELL;
+      if (!ghostSet.has(`${r - 1},${c}`)) {
+        this._pulseGfx.beginPath(); this._pulseGfx.moveTo(x0 - OFF, y0 - OFF); this._pulseGfx.lineTo(x1 + OFF, y0 - OFF); this._pulseGfx.strokePath();
+      }
+      if (!ghostSet.has(`${r + 1},${c}`)) {
+        this._pulseGfx.beginPath(); this._pulseGfx.moveTo(x0 - OFF, y1 + OFF); this._pulseGfx.lineTo(x1 + OFF, y1 + OFF); this._pulseGfx.strokePath();
+      }
+      if (!ghostSet.has(`${r},${c - 1}`)) {
+        this._pulseGfx.beginPath(); this._pulseGfx.moveTo(x0 - OFF, y0 - OFF); this._pulseGfx.lineTo(x0 - OFF, y1 + OFF); this._pulseGfx.strokePath();
+      }
+      if (!ghostSet.has(`${r},${c + 1}`)) {
+        this._pulseGfx.beginPath(); this._pulseGfx.moveTo(x1 + OFF, y0 - OFF); this._pulseGfx.lineTo(x1 + OFF, y1 + OFF); this._pulseGfx.strokePath();
+      }
+    }
+  }
+
   // ── Scene construction ────────────────────────────────────────────────────────
 
   _buildBackground() {
@@ -165,6 +205,7 @@ export default class GeniusSquareGame extends Phaser.Scene {
   _buildGridGraphics() {
     this.humanGridGfx = this.add.graphics().setDepth(D.grid);
     this.aiGridGfx    = this.add.graphics().setDepth(D.grid);
+    this._pulseGfx    = this.add.graphics().setDepth(D.grid + 1);
   }
 
   _buildLabels() {
@@ -358,6 +399,7 @@ export default class GeniusSquareGame extends Phaser.Scene {
     }
     this.selectedPiece = { pieceId, oriIdx: 0 };
     this.ghostCells    = null;
+    playSound(this, SFX.UI_PICK);
     this._renderTray();
     this._renderHumanGrid();
   }
@@ -373,16 +415,130 @@ export default class GeniusSquareGame extends Phaser.Scene {
 
   _rotate() {
     if (!this.selectedPiece || this.gameOver) return;
-    this.selectedPiece.oriIdx = rotateOri(this.selectedPiece.pieceId, this.selectedPiece.oriIdx);
-    this._updateGhostAt(this._lastHoverR, this._lastHoverC);
-    this._renderHumanGrid();
+    playSound(this, SFX.UI_ACTIVATE);
+    this._cancelGhostAnim();
+    if (!this.ghostCells) {
+      this.selectedPiece.oriIdx = rotateOri(this.selectedPiece.pieceId, this.selectedPiece.oriIdx);
+      this._updateGhostAt(this._lastHoverR, this._lastHoverC);
+      this._renderHumanGrid();
+      return;
+    }
+    this._startGhostAnim('rotate');
   }
 
   _flip() {
     if (!this.selectedPiece || this.gameOver) return;
-    this.selectedPiece.oriIdx = flipOri(this.selectedPiece.pieceId, this.selectedPiece.oriIdx);
+    playSound(this, SFX.UI_FLIP);
+    this._cancelGhostAnim();
+    if (!this.ghostCells) {
+      this.selectedPiece.oriIdx = flipOri(this.selectedPiece.pieceId, this.selectedPiece.oriIdx);
+      this._updateGhostAt(this._lastHoverR, this._lastHoverC);
+      this._renderHumanGrid();
+      return;
+    }
+    this._startGhostAnim('flip');
+  }
+
+  _cancelGhostAnim() {
+    if (!this._ghostAnimContainer) return;
+    this.tweens.killTweensOf(this._ghostAnimContainer);
+    this._ghostAnimContainer.destroy(true);
+    this._ghostAnimContainer = null;
+    this._ghostAnim = null;
     this._updateGhostAt(this._lastHoverR, this._lastHoverC);
+  }
+
+  _startGhostAnim(type) {
+    const cells   = this.ghostCells;
+    const pieceId = this.selectedPiece.pieceId;
+    const hoverR  = this._lastHoverR;
+    const hoverC  = this._lastHoverC;
+    const n  = cells.length;
+    const cr = cells.reduce((s, [r]) => s + r, 0) / n;
+    const cc = cells.reduce((s, [, c]) => s + c, 0) / n;
+
+    const gfx = this.add.graphics();
+    this._fillGhostLocal(gfx, cells, cr, cc);
+
+    const pivotX = HGX + (cc + 0.5) * CELL;
+    const pivotY = HGY + (cr + 0.5) * CELL;
+    const container = this.add.container(pivotX, pivotY, [gfx]).setDepth(D.piece + 1);
+    this._ghostAnimContainer = container;
+
+    // Suppress normal ghost & pulse while animating
+    this.ghostCells = null;
+    this._pulseGfx?.clear();
     this._renderHumanGrid();
+
+    const HALF = 80;
+
+    const finish = () => {
+      container.destroy(true);
+      this._ghostAnimContainer = null;
+      this._ghostAnim = null;
+      this._updateGhostAt(this._lastHoverR, this._lastHoverC);
+      this._renderHumanGrid();
+    };
+
+    const phase2 = () => {
+      const oriCells = ORIENTATIONS[this.selectedPiece.pieceId][this.selectedPiece.oriIdx];
+      const [pinDr, pinDc] = _centerPin(oriCells);
+      const newCells = (hoverR >= 0 && hoverC >= 0)
+        ? absoluteCells(oriCells, hoverR - pinDr, hoverC - pinDc)
+        : null;
+      if (!newCells) { finish(); return; }
+
+      const nn  = newCells.length;
+      const ncr = newCells.reduce((s, [r]) => s + r, 0) / nn;
+      const ncc = newCells.reduce((s, [, c]) => s + c, 0) / nn;
+      gfx.clear();
+      this._fillGhostLocal(gfx, newCells, ncr, ncc);
+      container.setPosition(HGX + (ncc + 0.5) * CELL, HGY + (ncr + 0.5) * CELL);
+      if (type === 'rotate') container.angle = -90;
+
+      this._ghostAnim = this.tweens.add({
+        targets: container,
+        angle: 0, scaleX: 1, scaleY: 1,
+        duration: HALF,
+        ease: 'Power2.easeOut',
+        onComplete: finish,
+      });
+    };
+
+    const midpoint = () => {
+      if (type === 'rotate') {
+        this.selectedPiece.oriIdx = rotateOri(pieceId, this.selectedPiece.oriIdx);
+      } else {
+        this.selectedPiece.oriIdx = flipOri(pieceId, this.selectedPiece.oriIdx);
+      }
+      phase2();
+    };
+
+    const phase1Props = type === 'rotate'
+      ? { angle: 90, scaleX: 0, scaleY: 0 }
+      : { scaleX: 0 };
+
+    this._ghostAnim = this.tweens.add({
+      targets: container,
+      ...phase1Props,
+      duration: HALF,
+      ease: 'Power2.easeIn',
+      onComplete: midpoint,
+    });
+  }
+
+  _fillGhostLocal(gfx, cells, cr, cc) {
+    const pieceId  = this.selectedPiece?.pieceId;
+    const color    = PIECE_COLORS[pieceId] ?? 0xffffff;
+    const allValid = cells.every(([r, c]) =>
+      r >= 0 && r < 6 && c >= 0 && c < 6 && this.humanBoard[r * 6 + c] === null
+    );
+    gfx.fillStyle(color, allValid ? 0.55 : 0.2);
+    for (const [r, c] of cells) {
+      const lx = (c - cc) * CELL - CELL / 2;
+      const ly = (r - cr) * CELL - CELL / 2;
+      gfx.fillRoundedRect(lx + 3, ly + 3, CELL - 6, CELL - 6, 7);
+    }
   }
 
   _updateGhostAt(r, c) {
@@ -398,6 +554,7 @@ export default class GeniusSquareGame extends Phaser.Scene {
     const c = Math.floor((ptr.worldX - HGX) / CELL);
     this._lastHoverR = r;
     this._lastHoverC = c;
+    if (this._ghostAnimContainer) return; // let animation finish
     this._updateGhostAt(r, c);
     this._renderHumanGrid();
   }
@@ -413,6 +570,7 @@ export default class GeniusSquareGame extends Phaser.Scene {
 
     // Click on a placed piece → lift it back to the tray
     if (cellVal && cellVal !== 'blocked') {
+      this._cancelGhostAnim();
       this._liftPiece(cellVal);
       return;
     }
@@ -426,7 +584,7 @@ export default class GeniusSquareGame extends Phaser.Scene {
     const { pieceId } = this.selectedPiece;
     this.humanBoard = placePiece(this.humanBoard, this.ghostCells, pieceId);
     this.placedPieces.add(pieceId);
-    playSound(this, SFX.CARD_PLACE);
+    playSound(this, SFX.UI_PLACE);
     this._clearSelection();
     this._renderHumanGrid();
     this._renderTray();
@@ -557,6 +715,7 @@ export default class GeniusSquareGame extends Phaser.Scene {
     this.gameOver = true;
     this._stopAI();
     this.opponentPortrait?.playEmotion('upset');
+    playSound(this, SFX.UI_CHIME);
     playSound(this, SFX.VICTORY_SHORT);
     this._recordResult('win');
     this._showOverlay(true);

public/src/games/katamino/KataminoGame.js

@@ -1,6 +1,7 @@
 import * as Phaser from 'phaser';
 import { GAME_WIDTH, GAME_HEIGHT, COLORS } from '../../config.js';
 import { Button } from '../../ui/Button.js';
+import { MusicPlayer } from '../../ui/MusicPlayer.js';
 import { playSound, SFX } from '../../ui/Sounds.js';
 import {
   ROWS, PIECES, PIECE_COLORS, ORIENTATIONS,
@@ -74,14 +75,22 @@ export default class KataminoGame extends Phaser.Scene {
     // Rendering
     this._screenContainer = null;
     this._maskGfx         = null;
-    this._boardGfx        = null;
-    this._traySlots       = [];
+    this._boardGfx           = null;
+    this._pulseGfx           = null;
+    this._ghostAnimContainer = null;
+    this._ghostAnim          = null;
+    this._traySlots          = [];
 
     // Input handler refs for cleanup
     this._inputHandlers = [];
   }
 
-  create() {
+  async create() {
+    try {
+      const music = this.cache.json.get('music');
+      if (music?.tracks) new MusicPlayer(this, music.tracks);
+    } catch (_) { /* optional */ }
+
     this._bank = this.cache.json.get('katamino');
 
     this.add.rectangle(GAME_WIDTH / 2, GAME_HEIGHT / 2, GAME_WIDTH, GAME_HEIGHT, 0x0f0d0a).setDepth(D.bg);
@@ -94,6 +103,44 @@ export default class KataminoGame extends Phaser.Scene {
     this._showPentaSelect();
   }
 
+  update(time) {
+    if (!this._pulseGfx || this._screen !== 'play' || !this._ghostCells || !this._selectedPiece) {
+      this._pulseGfx?.clear();
+      return;
+    }
+
+    const cells    = this._ghostCells;
+    const pieceId  = this._selectedPiece.pieceId;
+    const alpha    = 0.35 + 0.65 * Math.abs(Math.sin(time * 0.004));
+    const allValid = cells.every(([r, c]) =>
+      r >= 0 && r < ROWS && c >= 0 && c < this._cols && this._board[r * this._cols + c] === null
+    );
+    const color    = allValid ? (PIECE_COLORS[pieceId] ?? 0xffffff) : 0xff4444;
+    const ghostSet = new Set(cells.map(([r, c]) => `${r},${c}`));
+    const OFF      = 4;
+    const bx       = this._boardX;
+
+    this._pulseGfx.clear();
+    this._pulseGfx.lineStyle(5, color, alpha);
+
+    for (const [r, c] of cells) {
+      const x0 = bx + c * CELL, y0 = BOARD_Y + r * CELL;
+      const x1 = x0 + CELL,     y1 = y0 + CELL;
+      if (!ghostSet.has(`${r - 1},${c}`)) {
+        this._pulseGfx.beginPath(); this._pulseGfx.moveTo(x0 - OFF, y0 - OFF); this._pulseGfx.lineTo(x1 + OFF, y0 - OFF); this._pulseGfx.strokePath();
+      }
+      if (!ghostSet.has(`${r + 1},${c}`)) {
+        this._pulseGfx.beginPath(); this._pulseGfx.moveTo(x0 - OFF, y1 + OFF); this._pulseGfx.lineTo(x1 + OFF, y1 + OFF); this._pulseGfx.strokePath();
+      }
+      if (!ghostSet.has(`${r},${c - 1}`)) {
+        this._pulseGfx.beginPath(); this._pulseGfx.moveTo(x0 - OFF, y0 - OFF); this._pulseGfx.lineTo(x0 - OFF, y1 + OFF); this._pulseGfx.strokePath();
+      }
+      if (!ghostSet.has(`${r},${c + 1}`)) {
+        this._pulseGfx.beginPath(); this._pulseGfx.moveTo(x1 + OFF, y0 - OFF); this._pulseGfx.lineTo(x1 + OFF, y1 + OFF); this._pulseGfx.strokePath();
+      }
+    }
+  }
+
   // ── Screen management ──────────────────────────────────────────────────────
 
   _clearScreen() {
@@ -102,6 +149,14 @@ export default class KataminoGame extends Phaser.Scene {
     for (const { ev, fn } of this._inputHandlers) this.input.off(ev, fn);
     this._inputHandlers = [];
 
+    // Kill any in-progress piece animation
+    if (this._ghostAnimContainer) {
+      this.tweens.killTweensOf(this._ghostAnimContainer);
+      this._ghostAnimContainer.destroy(true);
+      this._ghostAnimContainer = null;
+    }
+    this._ghostAnim = null;
+
     // Reset play state
     this._board        = null;
     this._cols         = null;
@@ -111,6 +166,7 @@ export default class KataminoGame extends Phaser.Scene {
     this._lastHoverR   = -1;
     this._lastHoverC   = -1;
     this._boardGfx     = null;
+    this._pulseGfx     = null;
     this._traySlots    = [];
   }
 
@@ -372,12 +428,12 @@ export default class KataminoGame extends Phaser.Scene {
     }).setOrigin(0.5);
     sc.add([backBtn, titleTxt]);
 
-    // Reset and Leave buttons
-    const resetBtn = new Button(this, GAME_WIDTH - 310, 46, 'Reset',
+    // Reset and Leave buttons (lower right)
+    const resetBtn = new Button(this, GAME_WIDTH - 310, GAME_HEIGHT - 40, 'Reset',
       () => this._resetBoard(),
       { variant: 'ghost', width: 140, height: 44, fontSize: 18 }
     ).setDepth(D.ui + 1);
-    const leaveBtn = new Button(this, GAME_WIDTH - 150, 46, 'Leave',
+    const leaveBtn = new Button(this, GAME_WIDTH - 150, GAME_HEIGHT - 40, 'Leave',
       () => this.scene.start('GameMenu'),
       { variant: 'ghost', width: 140, height: 44, fontSize: 18 }
     ).setDepth(D.ui + 1);
@@ -387,6 +443,10 @@ export default class KataminoGame extends Phaser.Scene {
     this._boardGfx = this.add.graphics().setDepth(D.board);
     sc.add(this._boardGfx);
 
+    // Pulse outline (above board fill, below tray)
+    this._pulseGfx = this.add.graphics().setDepth(D.board + 1);
+    sc.add(this._pulseGfx);
+
     // Board input zone (use setOrigin(0) so x,y = top-left)
     const zone = this.add.zone(this._boardX, BOARD_Y, boardW, ROWS * CELL)
       .setOrigin(0)
@@ -533,6 +593,7 @@ export default class KataminoGame extends Phaser.Scene {
     if (this._selectedPiece?.pieceId === pieceId) { this._clearSelection(); return; }
     this._selectedPiece = { pieceId, oriIdx: 0 };
     this._ghostCells    = null;
+    playSound(this, SFX.UI_PICK);
     this._renderTray();
     this._renderBoard();
   }
@@ -548,16 +609,130 @@ export default class KataminoGame extends Phaser.Scene {
 
   _rotateSelected() {
     if (this._screen !== 'play' || !this._selectedPiece) return;
-    this._selectedPiece.oriIdx = rotateOri(this._selectedPiece.pieceId, this._selectedPiece.oriIdx);
-    this._updateGhostAt(this._lastHoverR, this._lastHoverC);
-    this._renderBoard();
+    playSound(this, SFX.UI_ACTIVATE);
+    this._cancelGhostAnim();
+    if (!this._ghostCells) {
+      this._selectedPiece.oriIdx = rotateOri(this._selectedPiece.pieceId, this._selectedPiece.oriIdx);
+      this._updateGhostAt(this._lastHoverR, this._lastHoverC);
+      this._renderBoard();
+      return;
+    }
+    this._startGhostAnim('rotate');
   }
 
   _flipSelected() {
     if (this._screen !== 'play' || !this._selectedPiece) return;
-    this._selectedPiece.oriIdx = flipOri(this._selectedPiece.pieceId, this._selectedPiece.oriIdx);
+    playSound(this, SFX.UI_FLIP);
+    this._cancelGhostAnim();
+    if (!this._ghostCells) {
+      this._selectedPiece.oriIdx = flipOri(this._selectedPiece.pieceId, this._selectedPiece.oriIdx);
+      this._updateGhostAt(this._lastHoverR, this._lastHoverC);
+      this._renderBoard();
+      return;
+    }
+    this._startGhostAnim('flip');
+  }
+
+  _cancelGhostAnim() {
+    if (!this._ghostAnimContainer) return;
+    this.tweens.killTweensOf(this._ghostAnimContainer);
+    this._ghostAnimContainer.destroy(true);
+    this._ghostAnimContainer = null;
+    this._ghostAnim = null;
     this._updateGhostAt(this._lastHoverR, this._lastHoverC);
+  }
+
+  _startGhostAnim(type) {
+    const cells   = this._ghostCells;
+    const pieceId = this._selectedPiece.pieceId;
+    const hoverR  = this._lastHoverR;
+    const hoverC  = this._lastHoverC;
+    const n  = cells.length;
+    const cr = cells.reduce((s, [r]) => s + r, 0) / n;
+    const cc = cells.reduce((s, [, c]) => s + c, 0) / n;
+
+    const gfx = this.add.graphics();
+    this._fillGhostLocal(gfx, cells, cr, cc);
+
+    const pivotX = this._boardX + (cc + 0.5) * CELL;
+    const pivotY = BOARD_Y + (cr + 0.5) * CELL;
+    const container = this.add.container(pivotX, pivotY, [gfx]).setDepth(D.piece + 1);
+    this._ghostAnimContainer = container;
+
+    // Suppress normal ghost & pulse while animating
+    this._ghostCells = null;
+    this._pulseGfx?.clear();
     this._renderBoard();
+
+    const HALF = 80;
+
+    const finish = () => {
+      container.destroy(true);
+      this._ghostAnimContainer = null;
+      this._ghostAnim = null;
+      this._updateGhostAt(this._lastHoverR, this._lastHoverC);
+      this._renderBoard();
+    };
+
+    const phase2 = () => {
+      const oriCells = ORIENTATIONS[this._selectedPiece.pieceId][this._selectedPiece.oriIdx];
+      const [pinDr, pinDc] = _centerPin(oriCells);
+      const newCells = (hoverR >= 0 && hoverC >= 0)
+        ? absoluteCells(oriCells, hoverR - pinDr, hoverC - pinDc)
+        : null;
+      if (!newCells) { finish(); return; }
+
+      const nn  = newCells.length;
+      const ncr = newCells.reduce((s, [r]) => s + r, 0) / nn;
+      const ncc = newCells.reduce((s, [, c]) => s + c, 0) / nn;
+      gfx.clear();
+      this._fillGhostLocal(gfx, newCells, ncr, ncc);
+      container.setPosition(this._boardX + (ncc + 0.5) * CELL, BOARD_Y + (ncr + 0.5) * CELL);
+      if (type === 'rotate') container.angle = -90;
+
+      this._ghostAnim = this.tweens.add({
+        targets: container,
+        angle: 0, scaleX: 1, scaleY: 1,
+        duration: HALF,
+        ease: 'Power2.easeOut',
+        onComplete: finish,
+      });
+    };
+
+    const midpoint = () => {
+      if (type === 'rotate') {
+        this._selectedPiece.oriIdx = rotateOri(pieceId, this._selectedPiece.oriIdx);
+      } else {
+        this._selectedPiece.oriIdx = flipOri(pieceId, this._selectedPiece.oriIdx);
+      }
+      phase2();
+    };
+
+    const phase1Props = type === 'rotate'
+      ? { angle: 90, scaleX: 0, scaleY: 0 }
+      : { scaleX: 0 };
+
+    this._ghostAnim = this.tweens.add({
+      targets: container,
+      ...phase1Props,
+      duration: HALF,
+      ease: 'Power2.easeIn',
+      onComplete: midpoint,
+    });
+  }
+
+  _fillGhostLocal(gfx, cells, cr, cc) {
+    const pieceId  = this._selectedPiece?.pieceId;
+    const color    = PIECE_COLORS[pieceId] ?? 0xffffff;
+    const allValid = cells.every(([r, c]) =>
+      r >= 0 && r < ROWS && c >= 0 && c < this._cols && this._board[r * this._cols + c] === null
+    );
+    gfx.fillStyle(color, allValid ? 0.55 : 0.2);
+    for (const [r, c] of cells) {
+      const lx = (c - cc) * CELL - CELL / 2;
+      const ly = (r - cr) * CELL - CELL / 2;
+      gfx.fillRoundedRect(lx + 3, ly + 3, CELL - 6, CELL - 6, 9);
+    }
   }
 
   _updateGhostAt(r, c) {
@@ -573,6 +748,7 @@ export default class KataminoGame extends Phaser.Scene {
     const c = Math.floor((ptr.worldX - this._boardX) / CELL);
     this._lastHoverR = r;
     this._lastHoverC = c;
+    if (this._ghostAnimContainer) return; // let animation finish
     this._updateGhostAt(r, c);
     this._renderBoard();
   }
@@ -584,7 +760,7 @@ export default class KataminoGame extends Phaser.Scene {
     if (r < 0 || r >= ROWS || c < 0 || c >= this._cols) return;
 
     const cellVal = this._board[r * this._cols + c];
-    if (cellVal !== null) { this._liftPiece(cellVal); return; }
+    if (cellVal !== null) { this._cancelGhostAnim(); this._liftPiece(cellVal); return; }
 
     if (!this._selectedPiece || !this._ghostCells) return;
     if (!canPlace(this._board, this._cols, this._ghostCells)) {
@@ -595,12 +771,15 @@ export default class KataminoGame extends Phaser.Scene {
     const { pieceId } = this._selectedPiece;
     this._board = placePiece(this._board, this._cols, this._ghostCells, pieceId);
     this._placedPieces.add(pieceId);
-    playSound(this, SFX.CARD_PLACE);
+    playSound(this, SFX.UI_PLACE);
     this._clearSelection();
     this._renderBoard();
     this._renderTray();
 
-    if (isSolved(this._board)) this._showWinOverlay();
+    if (isSolved(this._board)) {
+      playSound(this, SFX.UI_CHIME);
+      this.time.delayedCall(1000, () => this._showWinOverlay());
+    }
   }
 
   _liftPiece(pieceId) {

public/src/scenes/PreloadScene.js

@@ -125,6 +125,11 @@ export default class PreloadScene extends Phaser.Scene {
     this.load.audio('sfx-woosh',         '/assets/fx/woosh.mp3');
     this.load.spritesheet('jello-items', '/assets/images/jello-items.png', { frameWidth: 132, frameHeight: 132 });
     this.load.audio('sfx-jello-monsters','/assets/fx/jello-monsters.mp3');
+    this.load.audio('sfx-ui-pick',     '/assets/fx/ui-pick.mp3');
+    this.load.audio('sfx-ui-activate', '/assets/fx/ui-activate.mp3');
+    this.load.audio('sfx-ui-flip',     '/assets/fx/ui-flip.mp3');
+    this.load.audio('sfx-ui-place',    '/assets/fx/ui-place.mp3');
+    this.load.audio('sfx-ui-chime',    '/assets/fx/ui-chime.mp3');
 
     this.load.spritesheet('catan-special-cards', '/assets/images/catan-special-cards.png', { frameWidth: 270, frameHeight: 390 });
 

public/src/ui/Sounds.js

@@ -48,6 +48,11 @@ export const SFX = {
   SQUASH:                'sfx-squash',
   WOOSH:                 'sfx-woosh',
   JELLO_MONSTERS:        'sfx-jello-monsters',
+  UI_PICK:               'sfx-ui-pick',
+  UI_ACTIVATE:           'sfx-ui-activate',
+  UI_FLIP:               'sfx-ui-flip',
+  UI_PLACE:              'sfx-ui-place',
+  UI_CHIME:              'sfx-ui-chime',
 };
 
 export function playSound(scene, key) {