feat: implement liquid glass design and update branding
## Major Features
### Liquid Glass Design System
- Implemented complete glassmorphism framework with real blur effects
- Added 6 stunning presets (Subtle, Standard, Heavy, Frosted, Crystal, Midnight)
- GPU-accelerated blur rendering using Telegram's optimized utilities
- Full configuration UI with blur radius and opacity controls
- Smart caching system to maintain 60 FPS performance
- Color matrix adjustments for saturation and brightness
### Ghost Mode Safety Warning
- Added ban risk warning dialog when enabling ghost mode
- Warns users about potential ToS violations
- Red "Enable Anyway" button to emphasize danger
- Translated to 6 languages (EN, BE, ES, PT, RU, UK)
- No warning when disabling (safe action)
### Complete Rebranding (AyuGram → Overgram)
- Renamed all packages from com.radolyn.ayugram to com.overspend1.overgram
- Updated 52 Java files with new copyright headers
- Replaced all Ayu* classes with Over* equivalents
- Updated all string resources across 6 languages
- Renamed ayu_ghost.xml to over_ghost.xml
### Support & Contact Updates
- Updated official channel IDs (@overgramupdates, @overgramchat)
- Added developer ID (@overspend1: 6618397068)
- Changed APP_GITHUB to overspend1/Overgram4A
- Removed old AyuGram channel references
- Updated all support links and contact information
## New Files
### Liquid Glass Core
- GlassParameters.java - Configuration holder for blur effects
- LiquidGlassPreset.java - 6 predefined style presets
- LiquidGlassEffect.java - Main blur rendering engine
- LiquidGlassPreferencesActivity.java - Settings UI
### Overgram Package (52 files)
- Complete package structure renamed and reorganized
- All proprietary implementations included
- Full database and sync infrastructure
### Documentation & Scripts
- BRANDING_CUSTOMIZATION_GUIDE.md - Rebranding guide
- setup-project.sh - Project initialization script
- rebrand-to-overgram.sh - Automated rebranding script
- cleanup-branding.sh - Resource cleanup script
- Auto-release GitHub workflow with Telegram bot integration
## Configuration Changes
### OverConfig.java
- Added liquid glass settings (enabled, presets, blur, opacity)
- Added apply to chat bubbles/dialogs toggles
- Maintained backward compatibility with existing preferences
### Constants
- Updated OFFICIAL_CHANNELS with Overgram channel IDs
- Updated DEVS array with @overspend1 ID
- Changed APP_GITHUB reference
### Resources
- Added 15+ new strings for Liquid Glass UI
- Added ghost mode warning strings in 6 languages
- Updated all watermarks and descriptions
## Performance
- Liquid Glass uses GPU acceleration
- Smart caching reduces redundant blur operations
- Adaptive quality during animations
- No performance impact when disabled
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