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swarm-ci-runner: run the forge CI runner as a swarm service

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The CI runner was a hive deploy module: hive-ci.nix ran it beside the
forge, and hive-c0re registered it through the forge's admin API with
the `core` token, writing the registration token through hive-priv. It
could only run on the forge's host, and it kept an admin-scoped forge
token on a hive.

Now the runner is a swarm service:

- swarm-ci-runner.nix runs it in a `swarm-ci-runner` container on the
  host that sets deploy.ci-runner.enable, reaching the forge by name.
  It needs neither the forge nor a hive there.
- swarm-controller reads the forge's runner registration token with its
  own admin token and writes it to swarm/services/ci-runner/
  registration-token whenever it differs from what it last wrote. Its
  grant on that path is create/update only.
- The runner's own leaf (CN swarm-ci-runner, role and policy of the same
  name) reads that one path. swarm-bao-ci-runner.service fetches it into
  the runner's EnvironmentFile and restarts the runner on a change.
- A pre-start step removes .runner when the daemon's journal since its
  last start holds Forgejo's "unregistered runner" refusal (the daemon
  exits 1 when its startup Declare gets it), or when .runner names
  another forge address; upstream's pre-start step then registers again.

Removed from the hive side: hive-ci.nix and deploy.forgejo.ci.*,
forge/ci_runner.rs, PrivRequest::RegisterCiRunner and its handler and
ReadWritePaths entry, InfraContainer::Ci with hivectl's --ci and the
dashboard's hive-ci journal entry, HYPERHIVE_FORGE_CI_ENABLED, and
read:admin,write:admin from CORE_TOKEN_SCOPES: nothing else in hive-c0re
calls /api/v1/admin/*. The old ci options, under both swarm.forge.ci and
deploy.forgejo.ci, now fail evaluation naming deploy.ci-runner.

The forge's half of the old ci.enable, the actions/checkout mirror and
DEFAULT_ACTIONS_URL = self, is deploy.forgejo.actionsFromSelf.

Closes #4954
This commit is contained in:
atlas 2026-10-05 02:25:05 +02:00 • committed by mara
commit e2da5509ae
60 changed files with 1088 additions and 1201 deletions
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1
docs/swarm/credentials.md
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@ -69,6 +69,7 @@ of the cell says how.
| `swarm/hives/<hive>/matrix/sender-token` | `swarm-controller`, with the swarm's appservice token, for every hive in its directory in a five-minute pass | `swarm-controller` under its own certificate, before it decides whether to mint, and hive-c0re's `stored_sender_token()`, under the hive's own certificate | ✅ the controller's pass re-mints when the stored token is missing, unknown to the homeserver, or someone else's | ✅ hive-c0re's matrix sweep reads the store every run and overwrites its token file when the store's token differs |
| `swarm/hives/<hive>/queue/agent` | authelia | `swarm-bao-queue-agent` on the hive's host, under its own per-hive certificate; no agent's policy reaches it | must be stated | must be stated |
| `swarm/services/<clientId>/oidc/client` | authelia | that service's own reader, under its own certificate — the queue responder's under `swarm-nats-auth`'s, the homeserver's under `swarm-matrix-ctl`'s; the bao UI's by the store's granter | must be stated | must be stated |
| `swarm/services/ci-runner/registration-token` | `swarm-controller`, from the forge's admin API, at start and in a five-minute pass; its grant on the path is write-only | `swarm-bao-ci-runner` on the runner's host, under the runner's own certificate, into the runner's `EnvironmentFile`; no other principal's policy reads it | ❌ the forge hands out one token until an admin resets it; the controller writes a reset token within five minutes | ❌ `swarm-bao-ci-runner` reads it when it starts, at boot or deploy, and restarts the runner when the value changed |
| _(not in the store)_ a hive's mTLS leaf | the store's own PKI, or an operator placing it by hand | its own client, off disk — the exception above, because it's what makes every other row's pull possible | must be stated | must be stated |
<!-- vale write-good.Passive = YES -->