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/CaseraUITests.xctestplan

@@ -24,7 +24,7 @@
         "SimpleLoginTest\/testCanTypeInLoginFields()"
       ],
       "target" : {
-        "containerPath" : "container:iosApp.xcodeproj",
+        "containerPath" : "container:honeyDue.xcodeproj",
         "identifier" : "1CBF1BEC2ECD9768001BF56C",
         "name" : "HoneyDueUITests"
       }