---
phase: 12-phase-task-decomposition
plan: 08
subsystem: test
tags: [e2e-tests, decompose, test-harness, task-persistence]

# Dependency graph
requires:
  - phase: 12-05
    provides: spawnArchitectDecompose procedure
  - phase: 12-06
    provides: Plan CLI commands and architect decompose CLI
  - phase: 11-08
    provides: TestHarness architect mode helpers pattern
provides:
  - TestHarness with decompose scenario helpers
  - E2E tests for decompose mode completion and Q&A flow
  - E2E tests for task persistence from decomposition output
  - Full workflow test: initiative -> phase -> plan -> decompose -> tasks
affects: [testing-infrastructure, e2e-coverage]

# Tech tracking
tech-stack:
  added: []
  patterns:
    - "Decompose scenario helpers following architect pattern"
    - "Plan convenience methods via tRPC caller"

key-files:
  created:
    - src/test/e2e/decompose-workflow.test.ts
  modified:
    - src/test/harness.ts

key-decisions:
  - "planRepository added to harness for plan operations"
  - "Decompose helpers follow same pattern as architect discuss/breakdown helpers"
  - "Agent waiting emits agent:waiting event, not agent:stopped"

patterns-established:
  - "TestHarness decompose helpers: setArchitectDecomposeComplete, setArchitectDecomposeQuestions"
  - "Plan/task convenience methods: createPlan, getTasksForPlan"

# Metrics
duration: 4min
completed: 2026-02-01
---

# Phase 12 Plan 08: TestHarness Helpers & Decompose E2E Tests Summary

**Added TestHarness decompose mode support and comprehensive E2E tests for the complete decomposition workflow**

## Performance

- **Duration:** 4 min
- **Started:** 2026-02-01T10:53:47Z
- **Completed:** 2026-02-01T10:57:14Z
- **Tasks:** 2
- **Files modified:** 2

## Accomplishments

- Added decompose scenario helpers to TestHarness (setArchitectDecomposeComplete, setArchitectDecomposeQuestions)
- Added planRepository and plan convenience methods (createPlan, getTasksForPlan)
- Created comprehensive E2E tests for decompose workflow (7 tests)
- Validated full workflow: initiative -> phase -> plan -> decompose -> task persistence

## Task Commits

Each task was committed atomically:

1. **Task 1: Add TestHarness decompose mode helpers** - `4263c08` (feat)
2. **Task 2: Add decompose mode E2E tests** - `9b370a2` (test)

## Files Created/Modified

- `src/test/harness.ts` - Added decompose helpers, planRepository, plan convenience methods
- `src/test/e2e/decompose-workflow.test.ts` - New E2E test file (7 tests)

## Tests Added

- **Spawn decompose complete** - Spawn agent, complete with tasks
- **Q&A flow** - Pause on questions, resume with answers
- **Multiple questions** - Handle 3 questions with mixed options
- **Task persistence** - Create and retrieve tasks from decomposition
- **All task types** - Verify auto and checkpoint variants
- **Task dependencies** - Create complex dependency graphs
- **Full workflow** - Initiative -> phase -> plan -> decompose -> tasks

## Decisions Made

1. **planRepository in harness** - Required for createPlan and task operations
2. **Decompose helpers pattern** - Follows exact structure of architect discuss/breakdown helpers
3. **Agent waiting vs stopped** - Questions emit agent:waiting, not agent:stopped

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered

None

## User Setup Required

None - tests run automatically.

## Next Phase Readiness

- Phase 12 complete - all 8 plans finished
- Decompose workflow fully tested with E2E coverage
- Ready for Phase 13 or milestone completion

---
*Phase: 12-phase-task-decomposition*
*Completed: 2026-02-01*
