Build a self-contained index.html that includes Phaser. First, let's check the files in the directory.

Creating index.html.

There are several issues I should clean up:

1. I created a duplicated, unnecessary `this.physics.add.collider(this.ball, this.bricks, null, ...)` — remove it.
2. Weird no-op `Game.prototype;` line inside the pointermove handler — remove.
3. `this.physics.add.existing(this.add.image(W / 2, 0, 'wall').setVisible(false), false);` — leftover junk, remove.
4. `boundTop.refreshFrequency` — no problem.
5. Inside update: it's setting velocity and then immediately after setting `p.setVelocityX(0)` — actually, I'm setting velocity for keyboard movement and then zeroing it out… that cancels the keyboard movement! Let me reorganize: compute the new x directly.

Also `this.ball.onFloor` is unused — no problem, harmless but let's remove it.

Furthermore, the pointerdown handler launches the ball but doesn't reset on gameover — pointerdown only fires launchBall for 'ready'. Gameover needs a reset on click. Fix: inside the pointerdown handler, if state is 'gameover' then resetGame.

Paddle movement rewrite:

```js
update: function () {
  var p = this.paddle;
  var target = null;
  if (left) target = p.x - 8; // per-frame speed about 480/60
  ...
```

More simply:
```js
var speed = 480 / 60;
if (left) p.x -= speed;
if (right) p.x += speed;
if (this.mouseX !== null && !left && !right) p.x = Phaser.Math.Linear(p.x, this.mouseX, 0.35);
p.x = Clamp(p.x, 56, W-56);
```

One more thing: the collider for `boundTop` uses setDisplaySize and refreshBody — a staticImage generated from a W×H texture, whose display size is changed to (W, 6), placed at y=3. refreshBody should update the body. Actually, for static images, after changing the display size, calling refreshBody works. Good.

The left/right walls are at x=3, W-3 with displaySize(6, H) — same approach, and I also called refreshBody for them. Good.

Let's verify whether the file parses correctly (node's syntax check against the script). Extract the script and do a quick sanity check.

Should I also do a quick headless smoke test? No guarantee that a browser is available. Syntax check should be sufficient. Also verifying that the game object loads — I could maybe run it with a stub... skip; Arcade physics is standard.

One point: `this.bricks.clear(true, true)` after destroying children — no problem.

`onBrickHit` — the ball's velocity doesn't change when hitting a brick; arcade's default bounce 1 reflects the velocity. Good.

Done.