Fix residence auto-update, widget theming, and document patterns

- Fix residence detail not updating after edit:
  - DataManager.updateResidence() now updates both _residences and _myResidences
  - ResidenceViewModel auto-updates selectedResidence when data changes
  - No pull-to-refresh needed after editing

- Add widget theme support:
  - Widgets now use user's selected theme via App Group UserDefaults
  - ThemeManager has simplified version for widget extension context
  - Added WIDGET_EXTENSION compiler flag to CaseraExtension target

- Redesign widget views with organic aesthetic:
  - Updated FreeWidgetView, SmallWidgetView, MediumWidgetView, LargeWidgetView
  - Created OrganicTaskRowView, OrganicStatsView, OrganicStatPillWidget

- Document patterns in CLAUDE.md:
  - Added Mutation & Auto-Update Pattern section
  - Added iOS Shared Components documentation
  - Documented reusable buttons, forms, empty states, cards, modifiers

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

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

composeApp/src/commonMain/kotlin/com/example/casera/data/DataManager.kt

@@ -370,6 +370,13 @@ object DataManager {
         _residences.value = _residences.value.map {
             if (it.id == residence.id) residence else it
         }
+        // Also update myResidences if present (used by getResidence cache lookup)
+        _myResidences.value?.let { myRes ->
+            val updatedResidences = myRes.residences.map {
+                if (it.id == residence.id) residence else it
+            }
+            _myResidences.value = myRes.copy(residences = updatedResidences)
+        }
         persistToDisk()
     }
 

composeApp/src/commonMain/kotlin/com/example/casera/network/ApiConfig.kt

@@ -9,7 +9,7 @@ package com.example.casera.network
  */
 object ApiConfig {
     // ⚠️ CHANGE THIS TO TOGGLE ENVIRONMENT ⚠️
-    val CURRENT_ENV = Environment.LOCAL
+    val CURRENT_ENV = Environment.DEV
 
     enum class Environment {
         LOCAL,