WIP: map route updates and custom item drag/drop fixes (broken)

- Fixed map header not updating in ItineraryTableViewWrapper using Coordinator pattern
- Added routeVersion UUID to force Map re-render when routes change
- Fixed determineAnchor to scan backwards for correct anchor context
- Added location support to CustomItineraryItem (lat/lng/address)
- Added MapKit place search to AddItemSheet
- Added extensive debug logging for route waypoint calculation

Known issues:
- Custom items still not routing correctly after drag/drop
- Anchor type determination may still have bugs

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

SportsTime/Features/Trip/Views/ItineraryTableViewWrapper.swift

@@ -47,6 +47,14 @@ struct ItineraryTableViewWrapper<HeaderContent: View>: UIViewControllerRepresent
         self.onAddButtonTapped = onAddButtonTapped
     }
 
+    func makeCoordinator() -> Coordinator {
+        Coordinator()
+    }
+
+    class Coordinator {
+        var headerHostingController: UIHostingController<HeaderContent>?
+    }
+
     func makeUIViewController(context: Context) -> ItineraryTableViewController {
         let controller = ItineraryTableViewController(style: .plain)
         controller.colorScheme = colorScheme
@@ -60,6 +68,9 @@ struct ItineraryTableViewWrapper<HeaderContent: View>: UIViewControllerRepresent
         let hostingController = UIHostingController(rootView: headerContent)
         hostingController.view.backgroundColor = .clear
 
+        // Store in coordinator for later updates
+        context.coordinator.headerHostingController = hostingController
+
         // Pre-size the header view
         hostingController.view.translatesAutoresizingMaskIntoConstraints = false
         let targetWidth = UIScreen.main.bounds.width
@@ -85,8 +96,9 @@ struct ItineraryTableViewWrapper<HeaderContent: View>: UIViewControllerRepresent
         controller.onCustomItemDeleted = onCustomItemDeleted
         controller.onAddButtonTapped = onAddButtonTapped
 
-        // Note: Don't update header content here - it causes infinite layout loops
-        // Header is set once in makeUIViewController and remains static
+        // Update header content by updating the hosting controller's rootView
+        // This avoids recreating the view hierarchy and prevents infinite loops
+        context.coordinator.headerHostingController?.rootView = headerContent
 
         let (days, validRanges) = buildItineraryData()
         controller.reloadData(days: days, travelValidRanges: validRanges)