---
id: T02
parent: S03
milestone: M013
provides: []
requires: []
affects: []
key_files: ["backend/pipeline/quality/__main__.py", "backend/pipeline/quality/results/.gitkeep"]
key_decisions: ["Reporting functions live in __main__.py rather than separate reporting.py — keeps surface small"]
patterns_established: []
drill_down_paths: []
observability_surfaces: []
duration: ""
verification_result: "Verified --help shows all 5 args, --stage 3 prints 'only stage 5 supported' and exits 1, nonexistent fixture prints error and exits 1, synthetic data through leaderboard and trajectory renders correctly, JSON writer produces valid output with expected keys, and the full plan verification command exits 0."
completed_at: 2026-04-01T09:10:39.869Z
blocker_discovered: false
---

# T02: Added optimize CLI subcommand with leaderboard table, ASCII trajectory chart, and timestamped results JSON output

> Added optimize CLI subcommand with leaderboard table, ASCII trajectory chart, and timestamped results JSON output

## What Happened
---
id: T02
parent: S03
milestone: M013
key_files:
  - backend/pipeline/quality/__main__.py
  - backend/pipeline/quality/results/.gitkeep
key_decisions:
  - Reporting functions live in __main__.py rather than separate reporting.py — keeps surface small
duration: ""
verification_result: passed
completed_at: 2026-04-01T09:10:39.869Z
blocker_discovered: false
---

# T02: Added optimize CLI subcommand with leaderboard table, ASCII trajectory chart, and timestamped results JSON output

**Added optimize CLI subcommand with leaderboard table, ASCII trajectory chart, and timestamped results JSON output**

## What Happened

Extended the quality CLI __main__.py with an `optimize` subparser accepting --stage, --iterations, --variants-per-iter, --file, and --output-dir. Stage validation rejects non-5 stages with a clear error. Three reporting functions added: print_leaderboard() shows top 5 variants ranked by composite with per-dimension breakdown; print_trajectory() renders a 15-row ASCII chart of best composite per iteration; write_results_json() persists full results with config metadata. Created results/.gitkeep for the output directory.

## Verification

Verified --help shows all 5 args, --stage 3 prints 'only stage 5 supported' and exits 1, nonexistent fixture prints error and exits 1, synthetic data through leaderboard and trajectory renders correctly, JSON writer produces valid output with expected keys, and the full plan verification command exits 0.

## Verification Evidence

| # | Command | Exit Code | Verdict | Duration |
|---|---------|-----------|---------|----------|
| 1 | `python -m pipeline.quality optimize --help` | 0 | ✅ pass | 400ms |
| 2 | `python -m pipeline.quality optimize --stage 3 --iterations 1 --file fixtures/sample_moments.json` | 1 | ✅ pass (expected exit 1) | 300ms |
| 3 | `python -m pipeline.quality optimize --help && ... | grep -q 'stage 5'` | 0 | ✅ pass | 500ms |


## Deviations

None.

## Known Issues

None.

## Files Created/Modified

- `backend/pipeline/quality/__main__.py`
- `backend/pipeline/quality/results/.gitkeep`


## Deviations
None.

## Known Issues
None.
