Add honeycomb completion heatmap and dev API environment

- Add HoneycombSummaryView component with colored hexagon grid
- Display completion summary on residence detail screen
- Add CompletionSummary model to KMP shared layer
- Add DEV/PROD environment split in ApiConfig
- Fix ResidenceResponse initializers for completionSummary parameter

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

iosApp/iosApp/Residence/ResidenceDetailView.swift

@@ -237,6 +237,15 @@ private extension ResidenceDetailView {
 
                 contractorsSection
                     .padding(.horizontal, 16)
+
+                // Honeycomb completion summary
+                if let summary = residence.completionSummary {
+                    HoneycombSummaryView(
+                        summary: summary,
+                        residenceName: residence.name
+                    )
+                    .padding(.horizontal, 16)
+                }
             }
             .padding(.bottom, OrganicSpacing.airy)
         }

iosApp/iosApp/Residence/ResidenceViewModel.swift

@@ -354,6 +354,7 @@ class ResidenceViewModel: ObservableObject {
             isPrimary: false,
             isActive: true,
             overdueCount: 0,
+            completionSummary: nil,
             createdAt: now,
             updatedAt: now
         )