Add job timeouts and PR concurrency to workflows - #15
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Jobs had no timeout-minutes, so a hung job could hold one of the organization's 20 shared hosted-runner slots for the 6 hour default - a contributor to the 2026-08-25 runner starvation. Verification workflows triggered by pull requests also lacked a concurrency group, so rapid successive pushes stacked duplicate runs instead of cancelling stale ones. Rules applied: quick checks 15 min, builds 30 min, publish/release 60 min, integration/benchmarks 120 min; cancel-in-progress only on pull-request verification workflows, never on publish, release or deploy workflows.
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Part of the org-wide Actions throttling remediation. Mechanical, rule-based sweep:
pull_request_target,workflow_runor reusable (workflow_call) workflows.Every edited file re-parsed as YAML before commit. Files changed: