Add `dart run build_runner build --delete-conflicting-outputs` step before Flutter build to ensure all generated files (Riverpod and Hive) are fresh and properly generated. This ensures no stale or incompatible generated code causes build failures.
Also update CACHEBUST to v4 to force Docker to bypass cache and apply all recent fixes.
Update CACHEBUST arg to 2025-12-08-v3 to ensure Docker doesn't use cached layers and rebuilds with the latest code fixes. This ensures the duplicate height line fix is included in the build.
Remove duplicate ..style.height = '100%' line that was left over from merge conflict resolution. This duplicate assignment may have been causing Flutter build compilation issues.