feat: implement modal chart system with conditional UI and message filtering

- Add automatic data loading on IsoChartView modal open with timeout to prevent infinite loops
- Implement conditional UI visibility in IsoChartActionBar using CSS visibility property
- Create stable layout where controls reserve space when hidden (DatePicker, DIA dropdown, "Daten laden" button)
- Add Report.tsx component with precise CableLine filtering using exact string matching
- Enhance message filtering with debug logging and fallback identifier support
- Integrate chartTitle state management for seamless switching between "Messkurve" and "Meldungen"
- Add useIsoDataLoader hook for automatic chart data loading without user interaction
- Implement enhanced filtering logic to prevent false matches (CableLine1 vs CableLine16)
- Style Report component with consistent table layout matching MeldungenView design
- Add visual filter indicators and improved error messaging for better UX

Technical improvements:
- Replace conditional rendering with visibility control to maintain layout stability
- Add comprehensive logging for debugging message source filtering
- Implement proper cleanup for timeouts to prevent memory leaks
- Use exact string matching and prefix validation for precise slot identification

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cpl-v4",
-  "version": "1.6.668",
+  "version": "1.6.669",
   "private": true,
   "scripts": {
     "dev": "next dev",