Replace the local-fvm `build-android-bundle-local` task and its
`scripts/build_android_bundle_local.sh` (which required a host Android
SDK) with a single Dagger call to the existing `publish-android`
pipeline (build → stamp versionCode → sign → upload). Secrets are still
injected via `sops exec-env` for local use.
Closes#444
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>