feat: huge UI/UX overhaul, AUR improvements, and code polish

- Shortcuts Bar: Redesigned layout (Esc/Tab grouped, Space added), unified NAV styling, and implemented consistent Arch Blue branding.
- AUR Integration:
  - Added yay/paru helper toggle with keyboard shortcuts (1/2).
  - Implemented minimal visual ARCH logo indicator for AUR packages.
  - Standardized all AUR-related UI elements (checkboxes, badges) to official Arch Blue (#1793d1).
- Theme System: Refactored useTheme hook to a global Context Provider for perfect animation sync.
- Animations & UI: Enhanced drawer animations (slide-up/down), tooltips, and hover states using GSAP.
- Performance: Optimized app filtering with useMemo to prevent re-renders; fixed reconciliation issues.
- Fixes: Resolved hydration mismatches and malformed HTML tags.
- Docs: Updated README and CONTRIBUTING guidelines.
- Refactor: Cleaned up unused code.

CONTRIBUTING.md

@@ -87,6 +87,7 @@ All applications are defined in [`src/lib/data.ts`](src/lib/data.ts).
 2. If found → use `arch` field
 3. If NOT found → search [aur.archlinux.org](https://aur.archlinux.org/) → use `arch` field with AUR package name
 4. Prefer `-bin` suffix packages in AUR (pre-built, faster install)
+5. **IMPORTANT**: If your AUR package name does **NOT** end in `-bin`, `-git`, or `-appimage`, you **MUST** add it to `KNOWN_AUR_PACKAGES` in [`src/lib/aur.ts`](src/lib/aur.ts) so the app knows it's from AUR.
 
 #### Ubuntu/Debian: Official Repos Only