---
id: T-1640
name: "T-1061 arc integration assessment — verify T-1062/T-1064/T-1065/T-1066 compose
  end-to-end before human review"
description: >
  Cross-cutting verification: cargo check + cargo test on /opt/termlink (via termlink-agent)
  for the four crates the arc touched (hub, mcp, session, protocol); trace the composition
  through termlink_dispatch (T-1063 gate -> T-1064 task_type -> T-1065 model resolve
  -> outcome attribution); confirm T-1062 and T-1066 align as documented designs (read-only
  consumer / opt-in observer). Deliverable: docs/reports/T-1061-arc-integration-2026-05-01.md.
  Output: GO recommendation for the four open parents, four follow-ups captured (T-1636-T-1639)
  for buried supplementary-review notes.

status: work-completed
workflow_type: test
owner: agent
horizon:
tags: [from-T-1061, termlink, orchestrator, integration, verification]
components: []
related_tasks: [T-1061, T-1641]
created: 2026-05-01T10:48:05Z
last_update: '2026-06-11T22:23:54Z'
date_finished: 2026-05-01T10:51:41Z
bvp_scores_proposed:
  - ts: '2026-06-11T22:23:54Z'
    estimator: bvp-estimator-v1-heuristic
    scores:
      D1: 4
      D2: 0
      D3: 0
      D4: 3
      F-RECALL: 2
      F-ORCH: 0
      F3: 0
      F1: 0
      F2: 0
    rationale: D1=4 (body:structural-gate); D2=0 (no-signal); D3=0 (no-signal); 
      D4=3 (body:portability-abstraction); F-RECALL=2 (body:lightly-promoted); 
      F-ORCH=0 (body:wrap-phrase-without-substrate); F3=0 (no-signal); F1=0 
      (no-signal); F2=0 (no-signal)
    rubric_sha: e4a00f38e801
---

# T-1640: T-1061 arc integration assessment — verify T-1062/T-1064/T-1065/T-1066 compose end-to-end before human review

## Context

The T-1061 inception arc shipped its five phases as separate tasks (T-1062, T-1063, T-1064, T-1065, T-1066) over weeks. Each parent has its own GO recommendation. None of them verify the arc as a whole. Before handing the four open parents to human review, this task verifies the arc *composes* — that the four code paths (MCP gate, task-type routing, model resolve, governance subscriber) actually wire together as the inception document promised, and that the supplementary-review notes buried in the parent ACs do not contain ship-blockers.

Output: `docs/reports/T-1061-arc-integration-2026-05-01.md` plus four captured follow-ups (T-1636-T-1639).

## Acceptance Criteria

### Agent
- [x] `cargo check -p termlink-hub -p termlink-mcp -p termlink-session -p termlink-protocol` exits 0 on /opt/termlink (run via termlink-agent session)
- [x] `cargo test --lib` on the same four crates exits 0 (no regressions in the arc's claimed test counts)
- [x] All four worker artefacts referenced by the parent ACs exist on /opt/termlink: T-903-orchestrator-routing.md, T-905-data-plane-governance.md, T-906-model-param-dispatch.md, T-907-multi-llm-routing-phase-4b.md
- [x] Integration-trace artefact at `docs/reports/T-1061-arc-integration-2026-05-01.md` walks through `termlink_dispatch` line numbers showing T-1063 gate → T-1064 task_type → T-1065 model resolve → outcome attribution composition
- [x] Four follow-up tasks (T-1636-T-1639) filed for the buried supplementary-review notes (RoutingKey newtype, cost-aware learning, strip_ansi_codes dedup, throughput benchmark)

## Recommendation

**Recommendation:** GO

**Rationale:** The T-1061 arc composes end-to-end. T-1063 / T-1064 / T-1065 are wired together inside `termlink_dispatch` as a single pipeline (gate → route → resolve model → record outcome → persist), with the integration line-numbered in the artefact. T-1062 is a pure read-side consumer that aligns automatically with T-1063's task_id-as-tag propagation. T-1066's governance subscriber is opt-in by design (broadcast.resubscribe + bounded mpsc + try_send), not a missing integration. Cross-repo build + test verification clean. Four supplementary-review notes that would have been lost on parent close are now captured as standalone tasks (T-1636-T-1639). All four open parents (T-1062, T-1064, T-1065, T-1066) are ready for human review with a single companion artefact.

**Evidence:**
- `cargo check -p termlink-{hub,mcp,session,protocol}` on /opt/termlink → exit 0 (cached, 0.11s)
- `cargo test --lib` on same → exit 0 (visible counts: 100, 316; truncated tail but EXIT:0)
- `docs/reports/T-1061-arc-integration-2026-05-01.md` exists with the dispatch pipeline trace, phase-by-phase status, and recommended human-review order
- T-1636 (RoutingKey refactor), T-1637 (cost-aware), T-1638 (strip_ansi dedup), T-1639 (throughput bench) all in `.tasks/active/`
- All eight verification commands pass

## Verification

test -f docs/reports/T-1061-arc-integration-2026-05-01.md
test -f .tasks/active/T-1636-orchestrator-routing-refactor-composite-.md
test -f .tasks/active/T-1637-multi-llm-routing-cost-aware-learning--w.md
test -f .tasks/active/T-1638-termlink-extract-stripansicodes-to-share.md
test -f .tasks/active/T-1639-termlink-throughput-benchmark-for-govern.md
grep -q "termlink_dispatch (MCP entry)" docs/reports/T-1061-arc-integration-2026-05-01.md
grep -q "T-1063" docs/reports/T-1061-arc-integration-2026-05-01.md
grep -q "T-1066" docs/reports/T-1061-arc-integration-2026-05-01.md

## RCA

<!-- REQUIRED for bug-class tasks (workflow_type=build with bug-tag, OR title matches
     fix/bug/rca/broken/crash/error/regression/fail/hotfix).
     Non-bug-class tasks may leave this section empty or remove it.

     For bug-class, fill in:
       **Symptom:** what was observed (the user-facing manifestation).
       **Root cause:** the specific structural/logical gap — not "the code was wrong".
       **Why structurally allowed:** what in the framework/code/tooling let this go undetected.
       **Prevention:** what catches the next instance (test/lint/gate/doc/learning) — distinct from the fix itself.

     The completion gate (T-1550, G-019) blocks --status work-completed when
     bug-class AND this section is empty/template-only. Use --skip-rca to bypass (logged).
-->

## Decisions

<!-- Record decisions ONLY when choosing between alternatives.
     Skip for tasks with no meaningful choices.
     Format:
     ### [date] — [topic]
     - **Chose:** [what was decided]
     - **Why:** [rationale]
     - **Rejected:** [alternatives and why not]
-->

## Updates

### 2026-05-01T10:48:05Z — task-created [task-create-agent]
- **Action:** Created task via task-create agent
- **Output:** /opt/999-Agentic-Engineering-Framework/.tasks/active/T-1640-t-1061-arc-integration-assessment--verif.md
- **Context:** Initial task creation

## Reviewer Verdict (v1.5)

- **Scan ID:** R-95280ebc
- **Timestamp:** 2026-06-02T14:58:49Z
- **Catalogue:** v1.3-seed
- **Overall:** PASS
- **Needs Human:** no
- **Findings:** none
### 2026-05-01T10:51:41Z — status-update [task-update-agent]
- **Change:** status: started-work → work-completed
