Fix/issue 94 double tap lock fix

[Rage0fKratos]

Fix: Double-tap to lock not working outside central area

#94

Issue:
Double-tap to lock was only working within a specific central region. Taps on margins, padding, or gaps between widgets were ignored.

Root cause:
Gesture listener was attached to a limited view instead of the full root container.

Fix:
Moved the double-tap gesture listener to the root container view.
This enables detection across all non-interactive areas while preserving widget/icon interactions.

Behavior after fix:

• Double-tap works on empty areas across the screen
• Widgets and icons continue to handle their own touch events
• No interference with click/scroll behavior (observed)

Tested on:

• Environment: Android Emulator
• API level: [37]
• Device profile: [Pixel 9a]

Scenarios tested:

• Empty area → lock triggered
• App icon → opens normally
• Widget → interaction unaffected

Limitations:

• Not yet validated on a physical device (touch latency and gesture detection may differ)

Notes:
If any views consume touch events unexpectedly, additional handling may be required.

[luantak]

@Rage0fKratos works well thanks