Add physics/combat foundation, resource pickup flow, VFX polish, and HUD

- Cannon-es colliders for map/props/breakable crates (BreakablePropC,
  PhysicsC), AoE bat combat with facing-cone gating (PlayerC), camera
  follow with obstacle avoidance and facing-lock look-ahead
  (CameraFollowC).
- Resource pickups: scatter/bounce/hit-flash/sparkle-burst lifecycle with
  pooled sparkle VFX (ResourceC, SparkleFxC), flying to a screen-projected
  HUD anchor and on into the Pay Zone with perspective-corrected sizing
  (HudC, PayZoneC).
- Designer VFX playback via three.quarks for crate hit/destroy
  (PropVfxC), plus a procedural weapon-swing trail (WeaponTrailC).
- Resource-counter HUD UI (ui.css, images.ts) with CSS-driven mount/bump
  animations.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

package.json

@@ -21,7 +21,8 @@
     "cannon-es-debugger": "^1.0.0",
     "howler": "^2.2.4",
     "nipplejs": "^1.0.4",
-    "three": "^0.185.1"
+    "three": "^0.185.1",
+    "three.quarks": "^0.16.0"
   },
   "devDependencies": {
     "@types/howler": "^2.2.13",