Hash forbidden Plugin Guide skill path

[ymichael]

Human comments

What was wrong

maintenance-skill.test.ts checks that the Plugin Guide maintenance skill is absent from .agents/skills, but the @bb/plugin-api-map#test Turbo task did not include that out-of-package path in its inputs. A forbidden provider-native skill copy could therefore be added while Turbo replayed a stale passing test result.

What changed

Added .agents/skills/plugin-guide-maintenance/** to the existing @bb/plugin-api-map#test inputs in turbo.json, alongside the repository-owned skill and Plugin Guide source inputs. This is test-cache infrastructure only; it does not change runtime behavior, wire contracts, public APIs, or user-facing documentation.

How you verified

• Reproduced the pre-fix stale-cache behavior with a temporary forbidden skill file.
• Verified the resolved Turbo inputs include the forbidden path and that the focused guard executes and fails while the temporary file exists.
• Removed the temporary file and ran pnpm exec turbo run test typecheck --filter=@bb/plugin-api-map --force after rebasing onto current origin/main: all 75 tests passed, typecheck passed, and all four Turbo tasks executed without cache reuse.
• Ran git diff --check successfully.

AGENT GENERATED