[unic-archon-dlc] Cleanup workflow — arch-review, ADR consolidation, triage

[orioltf]

Parent

docs/issues/unic-archon-dlc/PRD.md

What to build

Post-merge cleanup that catches drift, locks in architectural decisions, and refreshes project state. Ends by reusing the triage workflow from slice 03.

In scope:

• /unic-dlc-cleanup <slug> command and .archon/workflows/cleanup.yaml.
• arch-review node:
  • Reads both docs/workflow/<slug>/PRD.md (intent) and docs/workflow/<slug>/report.md (technical outcome) alongside the changed code.
  • Catches technical drift (modules that became too shallow, tight coupling, leaky abstractions) and intent drift (delivered behaviour diverges from the PRD).
  • Proposes deepening opportunities for modules that grew thin during implementation.
  • Writes docs/workflow/<slug>/arch-review.md.
• adr-consolidation interactive node:
  • Reviews decisions logged during build (the "Decisions made during implementation" section of report.md) plus any ADR drafts proposed during arch-review.
  • Per-ADR approval gate: each proposed ADR is presented individually for accept / reject / edit. Only accepted ADRs are written to docs/adr/.
• Final node reuses slice 03's triage workflow — the same .archon/workflows/triage.yaml is referenced via Archon's workflow-include mechanism. Both invocations (standalone vs as cleanup's final node) produce the same HANDOFF.md and the same ROADMAP.md update.

Out of scope: changes to triage itself (any new behaviour belongs in slice 03's file).

Acceptance criteria

• /unic-dlc-cleanup <slug> writes docs/workflow/<slug>/arch-review.md covering technical drift, intent drift, and at least one deepening opportunity (or "none identified").
• adr-consolidation presents each proposed ADR individually; reject/accept choices are recorded; only accepted ADRs land in docs/adr/.
• Cleanup's final node reuses .archon/workflows/triage.yaml (no duplicate triage logic); HANDOFF.md is produced exactly once per cleanup run.
• The reused triage node updates docs/workflow/ROADMAP.md when invoked as cleanup's final node (no duplicate ROADMAP logic in cleanup itself).
• Command file uses the unic-dlc- prefix.

Blocked by

• [unic-archon-dlc] QA workflow — e2e, coverage gate, UAT, merge #112
• [unic-archon-dlc] Triage workflow and tracker adapter #103

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PRD: docs/issues/unic-archon-dlc/PRD.md
Migrated from: docs/issues/unic-archon-dlc/13-cleanup-workflow.md (source removed after migration)
Touched by PRs: #33