Platform: Mobile Touch-first input, safe area handling, and battery optimization define mobile development. NEVER Do (Expert Mobile Rules) Input & Display - NEVER use mouse events for touch interaction — Relying on on mobile is unreliable. Always use and for high-fidelity multi-touch support. - NEVER ignore display safe areas (notches/cutouts) — UI placed behind a camera notch is unusable. Query and offset critical UI accordingly. - NEVER assume fixed orientation — Locking a landscape game without handling the signal leads to broken layouts on foldable devices or tablet orientation shifts. Ba…