tigerduck-app

Use when bumping TigerDuck's marketing version (vX.Y.Z) — bumps project.pbxproj, refreshes README.md + README_en.md (badge + version-history row), and creates a single chore(release) commit. Trigger on phrases like "bump version", "升版", "release X.Y.Z", "更新 README 標版本", or whenever pbxproj's MARKETING_VERSION changes are staged.

Use when modifying any Gson-deserialized data class persisted across upgrades — specifically shared/Course.kt, data/cache/DataCache.kt, data/DataMigration.kt, wear/WearScheduleBridge.kt, wear/data/SchedulePersistence.kt, network/model/**, data/model/**, or app/proguard-rules.pro. Also use before reviewing PRs that add fields to any class in app/proguard-rules.pro's keep list. Enforces the upgrade-crash-prevention checklist so adding a new persisted field doesn't NPE existing users on first launch after upgrade (the v1.3.x→v1.4.0 and v1.4.1→v1.4.2 incident pattern).