Rename Xcode project to honeyDue and fix all bundle IDs

- Rename iosApp.xcodeproj → honeyDue.xcodeproj
- Rename Casera schemes → HoneyDue, HoneyDueExtension, HoneyDueUITests
- Split bundle IDs per-config: Debug=com.tt.honeyDue.dev, Release=com.tt.honeyDue
- Split app groups per-config: Debug=group.com.tt.honeyDue.dev, Release=group.com.tt.honeyDue
- Fix com.t-t. typo → com.tt. in test bundle IDs
- Add APP_GROUP_IDENTIFIER build setting with variable substitution in entitlements
- Replace all hardcoded app group strings in Swift with Info.plist runtime reads
- Remove stale PRODUCT_BUNDLE_IDENTIFIER from Config.xcconfig
- Update test plan container references

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

iosApp/iosApp/Helpers/ThemeManager.swift

@@ -60,7 +60,9 @@ enum ThemeID: String, CaseIterable, Codable {
 }
 
 // MARK: - Shared App Group UserDefaults
-private let appGroupID = "group.com.tt.honeyDue.HoneyDueDev"
+private let appGroupID: String = {
+    Bundle.main.infoDictionary?["AppGroupIdentifier"] as? String ?? "group.com.tt.honeyDue.dev"
+}()
 private let sharedDefaults: UserDefaults = {
     guard let defaults = UserDefaults(suiteName: appGroupID) else {
         #if DEBUG

iosApp/iosApp/Helpers/WidgetDataManager.swift

@@ -20,7 +20,9 @@ final class WidgetDataManager {
     static let completedColumn = "completed_tasks"
     static let cancelledColumn = "cancelled_tasks"
 
-    private let appGroupIdentifier = "group.com.tt.honeyDue.HoneyDueDev"
+    private let appGroupIdentifier: String = {
+        Bundle.main.infoDictionary?["AppGroupIdentifier"] as? String ?? "group.com.tt.honeyDue.dev"
+    }()
     private let tasksFileName = "widget_tasks.json"
     private let actionsFileName = "widget_pending_actions.json"
     private let pendingTasksFileName = "widget_pending_tasks.json"