Add client-side summary calculation and lookup resolution from cache

- Add calculateSummaryFromKanban() to compute summary stats from cached kanban data
- Add refreshSummaryFromKanban() called after task CRUD operations
- Fix column name matching to use API format (e.g., "overdue_tasks" not "overdue")
- Fix tasksDueNextMonth to only include due_soon tasks (not upcoming)
- Update TaskResponse computed properties to resolve from DataManager cache
- Update iOS task cards to use computed properties for priority/frequency/category
- This enables API to skip preloading lookups for better performance

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

iosApp/iosApp/Residence/ResidenceDetailView.swift

@@ -483,7 +483,8 @@ private extension ResidenceDetailView {
         Task {
             do {
                 let result = try await APILayer.shared.getContractorsByResidence(
-                    residenceId: Int32(Int(residenceId))
+                    residenceId: Int32(Int(residenceId)),
+                    forceRefresh: false
                 )
 
                 await MainActor.run {