feat(buttons): add smart zoom action to navigation category - #1038

Summary

This PR adds a Smart Zoom (smartZoom) action to the Navigation category (categoryNavigation) in mouse button bindings, allowing users to map a mouse button to trigger macOS's native smart zoom gesture (equivalent to a two-finger double-tap on Magic Mouse or Trackpad).

Changes

• SystemShortcut.swift:
  • Registered smartZoom with pseudo-code 0xFFFB, modifier 0, execution mode .trigger, and SF Symbol plus.magnifyingglass.
  • Added smartZoom to categoryNavigation.
  • Adjusted pseudo-code boundary filter from < 0xFFFC to < 0xFFFB.
• ShortcutExecutor.swift:
  • Added executeSmartZoom() that posts a synthetic macOS gesture event (NSEventTypeGesture = 29, kIOHIDEventTypeZoomToggle = 22) marked with MosEventMarker.syntheticCustom.
  • Added action resolution and execution dispatch for smartZoom.
• Localizable.xcstrings:
  • Added localized strings for "Smart Zoom" across all supported languages.
• InputProcessorTests.swift:
  • Added unit tests verifying definition, navigation category grouping, action resolution, gesture event construction, and button down/up lifecycle.

Verification

• Passed boundary lint: scripts/qa/lint-logi-boundary.sh
• Unit tests added covering smartZoom in InputProcessorTests