feat: port cursor rendering pipeline and zoom improvements from Recordly

- Add PixiJS cursor overlay with SVG assets, click animations, and
  spring-based smoothing (cursorRenderer.ts, motionSmoothing.ts)
- Replace zoom transform with Screen Studio-style easing and directional
  motion blur via pixi-filters MotionBlurFilter (zoomTransform.ts)
- Add connected zoom pan transitions between adjacent zoom regions
  (zoomRegionUtils.ts)
- Enhance focus utilities with soft boundary clamping (focusUtils.ts)
- Add cubic bezier and expo easing functions (mathUtils.ts)
- Rewrite VideoPlayback ticker for proper easing and cursor overlay updates
- Add cursor settings UI in SettingsPanel (size, smoothing, motion blur,
  click bounce, show/hide toggle)
- Add zoom motion blur and background blur intensity sliders
- Wire cursor telemetry and visual settings through VideoEditor props
- Add 21 SVG cursor assets (Default, Crosshair, Hand, Resize, Text, etc.)
- New dependencies: pixi-filters ^6.1.5, motion ^12.23.24

Author: EtienneLescot

package-lock.json

@@ -44,8 +44,9 @@
 		"gsap": "^3.13.0",
 		"lucide-react": "^0.545.0",
 		"mediabunny": "^1.25.1",
-		"motion": "^12.23.24",
+		"motion": "^12.36.0",
 		"mp4box": "^2.2.0",
+		"pixi-filters": "^6.1.5",
 		"pixi.js": "^8.14.0",
 		"react": "^18.2.0",
 		"react-dom": "^18.2.0",