ArmorPaint version: 1.0 (iPad build)

[keerati-kk]

OS / GPU model:
iPad M2 / iPadOS / Apple Silicon
Apple Pencil (USB-C)

Issue description:
Painting input is broken on iPad.
• Finger touch painting does not work.
• Apple Pencil (USB-C) only registers single taps (dot by dot), no continuous stroke.
• Brush strokes cannot be dragged.
• Pencil / pressure settings have no effect.
• Enabling any Pencil or Pressure option immediately disables all painting input.

Note: Apple Pencil (USB-C) does not support pressure sensitivity,
but it does support continuous stroke input.
The current behavior is not expected.

Steps to reproduce:
1. Open ArmorPaint on iPad (M2).
2. Select any paint brush.
3. Try painting with finger → no input.
4. Try painting with Apple Pencil (USB-C) → only single taps, no stroke.
5. Enable any Pencil / Pressure option in Preferences.
6. Try painting again → painting input stops completely.