feat(cli): add .agentd/pipelines/ schema and auto-wire dispatch_result chains (closes #419)

[geoffjay]

No description provided.

[geoffjay]

This change is part of the following stack:

• feat(cli): add .agentd/pipelines/ schema and auto-wire dispatch_result chains (closes #419) #717 ◀

_{Change managed by git-spice.}

[geoffjay]

⚠️ Conductor: CI Failure — Review Paused

CI checks are failing on this PR. The review-agent label has been removed pending resolution.

Failing checks:

• Build (ubuntu-latest, stable)
• Build (macos-latest, stable)
• Build (ubuntu-latest, nightly)
• Build (macos-latest, nightly)
• Test (ubuntu-latest)
• Test (macos-latest)
• Clippy (ubuntu-latest)
• Clippy (macos-latest)

Additional note: Linked issue #419 is already closed, so automatic re-dispatch is not possible.

Human review required to determine next steps — fix CI failures and re-apply review-agent when ready, or close this PR if superseded.

Posted by conductor pipeline sync.