chore(autoducks): update machinery to v0.5.8

[autoducks]

Version

0.5.2 → 0.5.8 · channel: stable

From b062c9a0ab871d9ee5dbb0bce1a430b27dbc36ee to 4ac745e52ee271fff7ef8b677cfb875c5572ae44.

Changelog

Fixed

• fix(agent): narrow the custom-agent lane's base-ref claim to what it delivers (#1179)

Fixed

• fix(agent): Read belongs in the tool floor too (#1176)

Fixed

• fix(agent): a tool floor the definition cannot replace away (#1174)

Fixed

• fix(feedback): a max_turns retry hint for the agent lane (#1172)

Fixed

• fix(agent): honour surface: both, and stop double-posting refusals (#1170)

Security

• The custom-agent lane now reads agent definitions — and the custom_agents
  config keys that grant them tools — from the base branch, never from the
  checked-out tree. On a pull request the checkout is refs/pull/N/head, and a
  definition body becomes the agent's prompt, so the previous behaviour could
  execute unreviewed content with the repository's token. This applies to both
  discovery and prompt assembly. (#1168)

Changed

• Behaviour change for /agent: a definition that exists only on a pull
  request is no longer discovered, so an agent cannot be tried from the pull
  request that introduces it. Merge the definition to the default branch first,
  then use it. A /agent run on a pull request still works and still takes that
  pull request as its context; only the definition comes from elsewhere. (#1168)
• Removed the machinery this replaces: the verified descriptor field, the tool
  clamp and its unverified_tools floor, the unverified-definition refusal, and
  the custom_agents.allow_unverified opt-in. None of these were part of a
  release, so no configuration needs migrating. (#1168)

Migrations applied

No migrations were required.

Verification

[1/6] bash-syntax: PASS
[2/6] json-yaml: PASS
[3/6] runtime-sync: PASS
[4/6] update-triggers-idempotence: PASS
[5/6] plugin-compilation-sync: PASS
[6/6] tree-integrity: PASS

verify-machinery: 6/6 checks passed

Rollback

Set update.pin to b062c9a0ab871d9ee5dbb0bce1a430b27dbc36ee in autoducks.json and re-run /update, or revert this PR.