## Summary
I fixed the GitHub CLI setup helper text visibility issue in `CreatePRDialog.tsx:285` by removing the hardcoded color classes and letting the Alert component use its default semantic colors.
### Change Made
**File:** `frontend/src/components/dialogs/tasks/CreatePRDialog.tsx`
**Before (line 285):**
```tsx
className="border-primary/30 bg-primary/10 text-primary"
```
**After:**
```tsx
// Removed custom className entirely
```
### Why This Fixes It
1. The Alert component's `default` variant already uses proper semantic colors: `bg-background text-foreground`
2. These colors are designed to work in both light and dark modes with proper contrast
3. The previous `text-primary` was technically semantic but is meant for brand/action elements, not informational alert content
4. By removing the custom styling, the Alert now properly adapts to the theme
### Verification
- TypeScript type checking: ✓ Passed
- ESLint: ✓ Passed (105 warnings, but none related to our changes)
The GitHub CLI help text will now be visible in both light and dark modes using the theme's semantic color tokens.
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