fix: locale-dependent category duplication bug (#956)

* fix: locale-dependent category duplication bug

* fix: use family locale for investment contributions category to prevent duplicates and handle legacy data

* Remove v* tag trigger from flutter-build to fix double-runs

publish.yml already calls flutter-build via workflow_call on v* tags,
so the direct push trigger was causing duplicate workflow runs.

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

* Refactor mobile release asset flow

* fix: category uniqueness and workflow issues

* fix: fix test issue

* fix: solve test issue

* fix: resolve legacy problem

* fix: solve lint test issue

* fix: revert unrelated changes

---------

Co-authored-by: Juan José Mata <juanjo.mata@gmail.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/flutter-build.yml

@@ -179,4 +179,4 @@ jobs:
           path: |
             mobile/build/ios/iphoneos/Runner.app
             mobile/build/ios-build-info.txt
-          retention-days: 30
+          retention-days: 30

.github/workflows/mobile-release.yml

@@ -111,4 +111,4 @@ jobs:
             - **Android APK**: Debug build for testing on Android devices
             - **iOS Build**: Unsigned iOS build (requires code signing for installation)
 
-            > **Note**: These are builds intended for testing purposes. For production use, please build from source with proper signing credentials.
+            > **Note**: These are builds intended for testing purposes. For production use, please build from source with proper signing credentials.

.github/workflows/publish.yml

@@ -465,4 +465,4 @@ jobs:
             echo "Push failed (attempt $attempts). Retrying in ${delay} seconds..."
             sleep ${delay}
             git pull --rebase origin $SOURCE_BRANCH
-          done
+          done