Architecture

GitHub Spec Kit (intent / specify / plan / tasks / implement / converge)
    ↓ SpecKitAdapter (feature + artifact discovery)
    ↓ Bridge lifecycle mapping (feature → ACKit task/ref)
    ↓ AckitAdapter (task / evidence / verification subprocesses)
    ↓ ACKit task / evidence / verification
    ↓ State-bound verdict (subjectDigest + evidenceDigest)
    ↓ Completion gate (FRESH PASS or refuse)
    ↓ Checkpoint / handoff (deterministic resume)

Spec Kit owns intent, specify, plan, tasks, implement, converge. ACKit owns repository context, policy, evidence, verification and completion trust, status, checkpoint, handoff. The bridge coordinates; it replaces neither.