宜博 / lemonboss

Implements the §P3 acceptance gate from plan-migration.md: a single
POST /api/devloop/projects/:pid/run drives the full project from L1
through L2 with 4 distinct BugTriager branches, observability via SSE
stream + bugs.ndjson + changelog.ndjson, and a tiny static status page.

Mock protocol — fallback dir:
- packages/acp-core/protocol/ClaudeCliProtocol.js
  * New options.mockFallbackDir: when scenario dir lacks a per-agent
    fixture, fall back to the baseline fixtures/devloop-mock/.
    Enables scenario dirs to override only the agents that differ
    (Integrator + Triager + sometimes Architect).

Scenario fixtures — 4 L2 branches:
- fixtures/devloop-mock-scenarios/contract_mismatch/
  * Architect: sequence[init, patch] — patch bumps sdd_rev → 2,
    units.json l2_rounds → 1, marks todo-be back to pending.
  * Integrator: sequence[fail (500 vs 201), pass].
  * Triager: contract_mismatch confidence 0.85 with proposed_sdd_patch.
- fixtures/devloop-mock-scenarios/impl_bug/
  * Integrator: sequence[fail (ReferenceError), pass].
  * Triager: impl_bug confidence 0.78 affected=[todo-be], proposed=null.
- fixtures/devloop-mock-scenarios/spec_ambiguous/
  * Triager: confidence 0.4 → LoopController emits human_intervention.
- fixtures/devloop-mock-scenarios/infra_flake/
  * Integrator: sequence[crashed (EADDRINUSE), pass].
  * Triager: infra_flake confidence 0.95 affected=[].
- Each scenario also includes a 1-unit (todo-be) Architect.init fixture
  so baseline Coder/Tester (todo-be) can drive L1.

LoopController:
- server/src/core/devloop/loop-controller.js — adds:
  * runProject(pid, opts) — wave-scheduled L1 via _groupUnitsByWave,
    runIntegrator (devloop-integrator), runTriager (devloop-triager),
    then branch dispatch:
      - contract_mismatch+conf≥0.5 → Architect(patch) writes new
        units.json (already pending, l2_rounds++); emits sdd.updated +
        changelog sdd_rev entry; loop back to L1.
      - impl_bug+conf≥0.5 → unitRegistry.reset(affected); loop, no
        budget burn.
      - spec_ambiguous OR conf<0.5 → emit human_intervention_needed
        SSE, exit l2_blocked.
      - infra_flake → loop directly (no reset, no budget burn).
  * runDocsPhase + runUnit + callAgent all thread opts.mockFixtureDir
    through to the protocol.
  * Auto-attaches sseBroker to unit-registry and bug-tracker on module
    load — every FSM transition + bug op fires an SSE event.
  * bug_open at integration failure, bug_transition → fixed when
    subsequent L2 round passes.

Routes:
- server/routes/devloop.js:
  * POST /projects/:pid/run now defaults to full runProject; ?only=<id>
    still drills into single-unit runUnit (P2 compatibility).
  * GET  /projects/:pid/stream — SSE with Last-Event-ID replay.
  * GET  /projects/:pid/bugs?status=&unit_id=&severity= — bug list.
- server/index.js + agent-server.js mount /public for static assets.

Static status page:
- server/public/devloop-status.html (~100 lines) — pure HTML, polls
  GET /state every 2s, renders unit DAG with status pills + timeline
  tail. URL ?pid= or input box.

Acceptance:
- scripts/phase3-verify.js — 9 steps across 4 scenarios + observability:
  ① contract_mismatch ships at sdd_rev=2 l2_rounds=1, sdd.updated SSE,
    changelog sdd_rev entry, bug open → fixed.
  ② impl_bug ships, sdd_rev=1, l2_rounds=0 (no budget burn).
  ③ spec_ambiguous → l2_blocked + human_intervention_needed SSE.
  ④ infra_flake ships, rerun_integrator action, l2_rounds=0.
  ⑤ Observability: timeline/bugs/changelog/stream.log present.
  ⑥ SSE replay from Last-Event-ID returns ≥2 historical events.

Tests (+13 cases):
- server/tests/devloop/run-project.test.js (11) — 4 scenarios end to
  end + SSE event capture.
- server/tests/devloop/routes.test.js (+2) — full-project mode + bugs
  404. Updated P2 ?only stub test → full-project 404 on unknown pid.

Results:
- phase0-verify: 8/8
- phase0-test-call: 7/7
- phase1-verify: 7/7
- phase2-verify: 6/6
- phase3-verify: 9/9
- vitest devloop+acp-core: 194/194 (was 181 → +13)

Specs:
- docs/prd/newfunction/_spec/plan-migration.md · P3 验收
- docs/prd/newfunction/_spec/loops-l2.md (failure attribution + budget)
- docs/prd/newfunction/_spec/agents-integrator.md
- docs/prd/newfunction/_spec/agents-triager.md

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>