test(ci): implement cache best practices for github workflows#8820

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mikehardy merged 3 commits intomainfrom

@mikehardy/ci-caching-best-practices

Jan 2, 2026

Commits on Jan 1, 2026

chore(ci): only cache main - avoid branches LRU evicting main cache
mikehardy
committed
chore(ci): cache restore/save failures should never break the build
mikehardy
committed
chore(ci): firebase emulators are cross-platform, share cache across OSs
mikehardy
committed