Scale Cloud Run min instances to 0 - #1
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Idle staging was billing two always-on instances. Scale to zero when unused; bump min back to 2 before a live drill.
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Why
mafia-stagingis pinned at min 2 (1 vCPU / 512Mi, request-based billing). Those two warm instances were costing ~$20/month even with no traffic.Change
google_cloud_run_v2_service.mafiamin_instance_countfrom2to0so the service scales to zero when idle.DECISIONS.md(#22 superseded by #53).Max instances stays at 10. Cold starts are acceptable off-demo; bump min back to 2 before a live drill or show.
Merging this applies via
.github/workflows/deploy.yml(terraform applyonmain).