Add quick start guide for applying the fix

Co-authored-by: jbrooksuk <246103+jbrooksuk@users.noreply.github.com>

QUICK_START.md

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+# Sticky Incidents Fix - Quick Start
+
+## What This Fix Does
+
+✅ Makes sticky incidents display prominently at the top of your Cachet status page
+✅ Adds distinctive amber visual styling to sticky incidents  
+✅ Prevents sticky incidents from appearing in the date-based timeline
+✅ No database changes or migrations required
+
+## Quick Apply (for testing)
+
+If you want to test this fix immediately in your local development environment:
+
+```bash
+# Navigate to your Cachet installation
+cd /path/to/cachet
+
+# Apply the patch to the core package
+cd vendor/cachethq/core
+patch -p1 < ../../../sticky-incidents-fix.patch
+
+# Clear caches
+php artisan config:clear
+php artisan view:clear
+```
+
+## Production Deployment
+
+For production, this fix should be merged into the `cachethq/core` repository:
+
+1. The changes are in 4 files (see patch file)
+2. Once merged and tagged in core, update your `composer.json`
+3. Run `composer update cachethq/core`
+
+## Files Changed
+
+1. `src/View/Components/IncidentTimeline.php` - Logic changes
+2. `resources/views/components/incident-timeline.blade.php` - UI changes  
+3. `resources/lang/en/incident.php` - Translation
+4. `tests/Feature/View/Components/IncidentTimelineTest.php` - Tests (new)
+
+## Documentation
+
+- **SUMMARY.md** - Quick overview with visuals
+- **STICKY_INCIDENTS_FIX.md** - Detailed user documentation
+- **IMPLEMENTATION_DETAILS.md** - Technical deep dive
+- **sticky-incidents-fix.patch** - The actual code changes
+
+## Testing
+
+After applying, test by:
+
+1. Create an incident and mark it as "Sticky"
+2. Visit your status page
+3. Verify the incident appears in "Stickied Incidents" section at top
+4. Verify it has an amber border
+5. Verify it's NOT in the "Past Incidents" timeline
+
+## Questions?
+
+Refer to the documentation files in this directory for complete details.