The subosito/flutter-action, actions/setup-java, and actions/setup-python
actions all query GitHub internal APIs that are unavailable on self-hosted
Gitea Actions runners. This caused the Test job to fail on Magrathea (Mac
runner) even though it was labelled [self-hosted, linux].
Changes:
- Replace subosito/flutter-action@v2 with direct Flutter SDK downloads
from Google's CDN (platform-aware: linux-x64 vs darwin-x64)
- Replace actions/setup-java@v4 with direct Temurin JDK 17 download
- Replace actions/setup-python@v5 with system Python3 (graceful fallback)
- Linux jobs (lint, test) use linux-x64 Flutter
- macOS jobs (build-ios) use darwin-x64 Flutter
- Android build (ubuntu-latest) keeps native action support
robot
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