Duplicate Code: URL Launching Logic in AboutPage

*Analysis of commit eaf30eabe62f9b178466629c6d3a4c4390e17311*

## Summary

The AboutPage (lib/ui/pages/about.dart:76-81) directly implements URL launching logic instead of using the existing LinkService. This creates duplicated URL launching functionality that should be consolidated into the LinkService for consistency.

## Duplication Details

### Pattern: Inconsistent URL Launching Implementation
- **Severity**: Medium
- **Occurrences**: 2 instances
- **Locations**:
- `lib/ui/pages/about.dart` (lines 76-81)
- `lib/services/link.dart` (lines 6-11)
- **Code Sample**:
``````dart
// AboutPage implementation
if (await canLaunchUrl(Uri.parse(url!))) {
await launchUrl(Uri.parse(url));
} else {
throw 'Could not launch $url';
}

// LinkService implementation (proper service layer)
if (await canLaunchUrlString(link)) {
await launchUrlString(link);
} else {
throw 'Could not launch $link';
}
``````

## Impact Analysis

- **Maintainability**: Changes to URL launching logic must be made in multiple places, increasing maintenance burden and risk of inconsistencies
- **Bug Risk**: If a bug is found in one implementation, it must be fixed in both locations. The two implementations use different APIs (canLaunchUrl/launchUrl vs canLaunchUrlString/launchUrlString)
- **Code Bloat**: Unnecessary duplication of URL launching logic adds ~6 lines of duplicated code
- **Architectural Inconsistency**: Other pages (IssueDetailPage, MorePage) properly use LinkService, but AboutPage bypasses it

## Refactoring Recommendations

1. **Use LinkService Consistently**
- Refactor: Replace direct URL launching in AboutPage with LinkService
- File to modify: `lib/ui/pages/about.dart`
- Change lines 76-81 to: `ref.read(linkServiceProvider).launchLink(url!)`
- Estimated effort: Low complexity (15 minutes)
- Benefits: Single source of truth for URL launching, consistent error handling, easier to test and maintain

2. **Add ConsumerWidget or Dependency Injection**
- AboutPage needs access to LinkService via Riverpod providers
- Convert AboutPage from StatelessWidget to ConsumerWidget
- Add necessary imports and ref.read() calls
- Benefits: Enables dependency injection, consistent with other pages

## Implementation Checklist

- [ ] Review duplication findings
- [ ] Convert AboutPage to ConsumerWidget
- [ ] Replace direct URL launching with LinkService calls
- [ ] Remove duplicate url_launcher imports from AboutPage
- [ ] Run tests to verify functionality
- [ ] Verify no functionality broken

## Analysis Metadata

- **Analyzed Files**: 29
- **Detection Method**: Manual semantic code analysis
- **Commit**: eaf30eabe62f9b178466629c6d3a4c4390e17311
- **Analysis Date**: 2026-02-14

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