feat(duo): add Duo notification peek with tap-to-view

[WingsDavis]

Overview

Adds an interactive notification peek pill to Duo around the camera cutout for incoming notifications with heads-up / default priority.

Incoming notifications morph out smoothly from the Duo ring into an OLED-black status capsule with vibrant accent borders extracted dynamically from the posting app.

Key Changes

• Morphing Notification Capsule: Expands smoothly from the camera cutout with subtle bouncy spring dynamics.
• Adaptive App Color Accent: Automatically extracts the notification/app accent color using the notification palette or falls back to Duo's active progress color.
• Single-Line Readable Text: Displays the notification preview (sender and message) in a clean, vertically centered single line with app name deduplication.
• Camera Cutout Spacing: Generous breathing margin (30dp) on both wings ensuring zero overlap with the punch-hole lens or the Duo progress ring.
• Tap-to-View & Interactive Launch:
  • Tapping the notification pill dispatches contentIntent with Background Activity Launch permissions.
  • Automatic fallback to main activity launch or expanding notification shade if pending intent is restricted.
• Swipe Gestures:
  • Swipe Down: Expands the system notification shade for full details.
  • Swipe Up: Dismisses the notification peek early.
• Settings Toggle: Added toggle under Settings > Display > Duo > Notification peek backed by reactive state in SettingsRepository and FeatureRegistry.

Testing

• Tested on Google Pixel 9 running Android 17.
• Verified touch dispatch, app launching, dismiss swipe, and battery margin avoidance.
• Verified string validation across all 74 locale files (scripts/validate_strings.py: 0 errors).

[sameerasw]

A change of plan. Since many users are now asking for basically a dynamic island implementation, I will consider that as a feature.

The existing status glance will become "Island" feature in the future so this PR will need some modifications to point to that feature instead.

Plus there are a lot of UI inconsistency and some stuff that I'd like to see changed... but I guess I can handle that after merging as this is a new feature.

Because of this, i will merge the PR into a feature branch and will start modifying there and update.

[sameerasw]

Thanks for your contributions <3

[WingsDavis]

Sounds good. Thanks for the update and for merging the PR into the feature branch.

Please let me know once the branch is updated or if you need me to help with any of the UI adjustments and modifications for the Island feature.