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/HoneyDueExtension.entitlements

@@ -4,7 +4,7 @@
 <dict>
 	<key>com.apple.security.application-groups</key>
 	<array>
-		<string>group.com.tt.honeyDue.HoneyDueDev</string>
+		<string>$(APP_GROUP_IDENTIFIER)</string>
 	</array>
 </dict>
 </plist>