ci: restrict GitHub Actions cache access with cache-mode - #40
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Set cache-mode to none at the workflow level, as none of the jobs restores or saves a cache, and document the convention next to the permissions rule. Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01AKZPpJJVhgvmm2GZbX3nxV
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Summary
GitHub now lets a workflow or job declare the cache access it needs with
cache-mode(read,write,write-only,none), enforced by the cache service (changelog, workflow syntax, dependency caching reference). Without it,push,scheduleandworkflow_dispatchruns getwriteby default.This applies the same least-privilege pattern already used for
permissions:cache-mode: noneat the workflow level ofci.yml,release.ymlandupdate-material.yml. No job restores or saves a cache: the Dev Containers CLI is installed withnpm install --globalanddevcontainers/actionuses no Actions cache, so nothing needs a job-level grant.AGENTS.mddocuments the convention next to thepermissions: {}rule.Notes
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https://claude.ai/code/session_01AKZPpJJVhgvmm2GZbX3nxV
Generated by Claude Code