Improve bullet sprite appearance and reduce its render scale

- Replaced the single-circle bullet texture with a three-circle design
  (brass/copper body, bright tracer core, and off-center highlight) for
  better readability against various backgrounds
- Reduced bullet texture size from 16×16 to 12×12 to match the more detailed
  design
- Decreased bullet render scale from 0.18 to 0.1 in the view to make bullets
  appear as small rounds rather than floating dots
- Updated documentation in sprites.md to reflect the new bullet design, size,
  and scale changes

src/games/wolfenstein/WolfensteinArt.js

@@ -48,11 +48,23 @@ function paintItem(scene, key, color) {
   g.destroy();
 }
 
+// A flat solid dot read as a blob at any size. A real round has a dark
+// brass/copper body (so it reads against bright walls, not just dark ones),
+// a hot tracer core smaller than the body (implies motion/heat, not just a
+// colored ball), and a tiny off-center highlight for a touch of roundness —
+// three concentric circles instead of one, still cheap to generate.
 function paintBullet(scene) {
-  const S = 16;
+  const S = 12;
+  const cx = S / 2, cy = S / 2;
   const g = scene.make.graphics({ x: 0, y: 0, add: false });
+  g.fillStyle(0x8a5a2a, 1);
+  g.fillCircle(cx, cy, S * 0.42);
+  g.lineStyle(1, 0x3a2410, 0.8);
+  g.strokeCircle(cx, cy, S * 0.42);
   g.fillStyle(0xfff2a8, 1);
-  g.fillCircle(S / 2, S / 2, S / 2);
+  g.fillCircle(cx, cy, S * 0.22);
+  g.fillStyle(0xffffff, 0.9);
+  g.fillCircle(cx - S * 0.08, cy - S * 0.08, S * 0.07);
   g.generateTexture('wolf-bullet', S, S);
   g.destroy();
 }

src/games/wolfenstein/WolfensteinView.js

@@ -229,7 +229,7 @@ export default class WolfensteinView {
       sprites.push({ key: `pickup:${pk.id}`, x: pk.x, y: pk.y, tex: `wolf-item-${pk.itemId}`, scale: 0.45 });
     }
     for (const proj of state.projectiles) {
-      sprites.push({ key: `proj:${proj.id}`, x: proj.x, y: proj.y, tex: 'wolf-bullet', scale: 0.18 });
+      sprites.push({ key: `proj:${proj.id}`, x: proj.x, y: proj.y, tex: 'wolf-bullet', scale: 0.1 });
     }
 
     const invDet = 1 / (camera.planeX * camera.dirY - camera.dirX * camera.planeY);

src/games/wolfenstein/sprites.md

@@ -169,9 +169,12 @@ same aspect ratio is what matters most):
 - `wolfenstein-item-pistol`, `wolfenstein-item-ammo`, `wolfenstein-item-health`
   — pickup icons. Placeholder is 64×64; square, transparent background.
   Rendered at billboard scale 0.45 (`WolfensteinView._drawSprites`).
-- `wolfenstein-bullet` — pistol round in flight. Placeholder is 16×16, a
+- `wolfenstein-bullet` — pistol round in flight. Placeholder is 12×12 (see
-  small bright circle; rendered at scale 0.18, so keep it simple/legible at
+  `WolfensteinArt.paintBullet`: a brass/copper body with a bright tracer
-  tiny sizes.
+  core and a small highlight, three concentric circles); rendered at scale
+  0.1 (`WolfensteinView._drawSprites`, shrunk from 0.18 on 2026-08-21 to
+  read as a small round rather than a floating dot) — keep any replacement
+  simple/legible at tiny sizes, same as before.
 - `wolfenstein-muzzle` — muzzle-flash sprite. Placeholder is 48×48. Not
   currently spawned by the scene at all (no code creates a `wolf-muzzle`
   image instance yet, painted or not) — wire it up on `weaponFired` events