Add residence picker to contractor create/edit screens

Kotlin/KMM:
- Update Contractor model with optional residenceId and specialties array
- Rename averageRating to rating, update address field names
- Add ContractorMinimal model for task references
- Add residence picker and multi-select specialty chips to AddContractorDialog
- Fix ContractorsScreen and ContractorDetailScreen field references

iOS:
- Rewrite ContractorFormSheet with residence and specialty pickers
- Update ContractorDetailView with FlowLayout for specialties
- Add FlowLayout component for wrapping badge layouts
- Fix ContractorCard and CompleteTaskView field references
- Update ContractorFormState with residence/specialty selection

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

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

iosApp/CaseraUITests.xctestplan

@@ -0,0 +1,34 @@
+{
+  "configurations" : [
+    {
+      "id" : "ED622844-DAF2-42F2-8EB3-128CC296628F",
+      "name" : "Test Scheme Action",
+      "options" : {
+
+      }
+    }
+  ],
+  "defaultOptions" : {
+    "performanceAntipatternCheckerEnabled" : true
+  },
+  "testTargets" : [
+    {
+      "skippedTests" : [
+        "CaseraUITests",
+        "CaseraUITests\/testExample()",
+        "CaseraUITests\/testLaunchPerformance()",
+        "CaseraUITestsLaunchTests",
+        "CaseraUITestsLaunchTests\/testLaunch()",
+        "SimpleLoginTest",
+        "SimpleLoginTest\/testAppLaunchesAndShowsLoginScreen()",
+        "SimpleLoginTest\/testCanTypeInLoginFields()"
+      ],
+      "target" : {
+        "containerPath" : "container:iosApp.xcodeproj",
+        "identifier" : "1CBF1BEC2ECD9768001BF56C",
+        "name" : "CaseraUITests"
+      }
+    }
+  ],
+  "version" : 1
+}