Run 181 (v0.25.0 tag) failed at "Build signed release APK" after ~7 min —
same disk-exhaustion pattern that hit the debug build. The debug workflow
was already fixed to arm64-v8a only; the release workflow still built all 3
ABIs and exceeded the runner's disk budget.
Changes:
- Add "Free disk space" step before system deps: removes /usr/local/lib/android,
/usr/share/dotnet, /opt/ghc, /usr/local/share/boost (~10 GB reclaimed).
- Limit ABIS to arm64-v8a + armeabi-v7a (drops x86_64, which is emulator-only).
- Remove x86_64 from rustup target add to match.
arm64-v8a covers all modern Android devices; armeabi-v7a covers legacy ARM.
x86_64 can be re-added later if a simulator-targeted test build is needed.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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