Cache v2 makes the cache server the `ACTIONS_RESULTS_URL` origin, so artifact calls arrived there and were proxied on to Gitea, failing whenever it could not reach the instance.
- Artifact calls are answered with a redirect, so the cache server opens no connection to Gitea. A scheme change or an untrusted instance is still proxied, but there the cache server is the runner itself, which already reaches Gitea.
- Failures answer in twirp, not an empty `502` that clients report as `Unexpected end of JSON input`.
- `cache.v2: false` really points artifacts at Gitea now.
- Cache reservations are bound to the job that made them, so two jobs saving one key cannot commit against each other's upload, and a retry after a lost answer no longer fails a saved entry.
- The toolkit patch, which edits the GitHub-host check out of an action's bundle, was left in the shared checkout where a job running with `runner.patch_actions: false` could inherit it. It is put back after the job's copy.
- `exec` names an origin for the cache v2 it advertises, and masks its runtime token.
Behaviour changes: `no_proxy` no longer exempts `cache.external_server`, and `cache.enabled: false` also stops external registration.
Fixes https://gitea.com/gitea/runner/issues/1208
Fixes https://gitea.com/gitea/runner/issues/1211
Assisted by Claude (Opus 5).
Reviewed-on: https://gitea.com/gitea/runner/pulls/1216
Reviewed-by: bircni <bircni@icloud.com>
Co-authored-by: silverwind <me@silverwind.io>
A step that failed, for any reason, made the runner restore the action's stock bundle and mark it never to be patched again. Every later `actions/upload-artifact` run then failed with `GHESNotSupportedError`, and nothing in the log said why.
The edit is now made as the action is copied into the job container, under the lock that guards the copy, and nothing reverts it. That also closes the race where another job's checkout reset the bundle mid-job.
`cache.v2` no longer decides whether the edit is made, it only withdraws the v2 advertisement, so artifacts work whatever the cache is set to.
Also added a new `runner.patch_actions` option to turn the edit off if it ever breaks an action.
Fixes https://gitea.com/gitea/runner/issues/1176
Reviewed-on: https://gitea.com/gitea/runner/pulls/1177
Reviewed-by: bircni <bircni@icloud.com>
Co-authored-by: silverwind <me@silverwind.io>
silverwind