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[AZ-446] CSV reporter: band + ci95 annotations + report.csv emitter
Batch 89 — adds optional `band`, `ci95_low`, `ci95_high` kw-only parameters to `_NfrRecorder.record_metric` and emits a new per-metric report.csv artifact (one row per scenario × metric, columns: scenario_id, metric_name, value, value_band, ci95_low, ci95_high, ac_id, outcome). Backwards compatible — existing 4-arg callers unchanged; unbalanced ci95 pair raises ValueError. report.csv is written once per pytest session from `pytest_sessionfinish` so the annotation pass runs once per CI invocation regardless of (fc_adapter, vio_strategy) (AC-3). `regression-baseline.json` intentionally kept flat to preserve the diff contract used by regression-detection tooling. NFT-RES-03 + NFT-PERF-01 scenarios updated to pass real bands and compute empirical 2.5/97.5-percentile ci95 from their own sample streams (per-iteration envelope ratios for Monte Carlo, per-frame latency samples for N-sample latency). Tests: 1229 e2e/_unit_tests pass (+6 vs. batch 88 for AZ-446 band/CI behavior, value-error on unbalanced ci95, report.csv columns, explicit-path override, and end-to-end emission via the pytest plugin). Code review: PASS_WITH_WARNINGS — 1 Low (empirical-CI semantics, documented inline), 1 Medium carried over from batch 88's cumulative-review backlog (write_csv_evidence + _resolve_fixture_path duplication is outside AZ-446 reporting scope). This commit closes Step 10 Implement Tests for cycle 1 (41 of 41 blackbox-test tasks done, AZ-406..AZ-446). Greenfield auto-chains to Step 11 Run Tests next. Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Oleksandr Bezdieniezhnykh
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# Batch Report
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**Batch**: 89
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**Tasks**: AZ-446 (CSV reporter refinements — trend-line + acceptance-band annotations + Monte Carlo CI)
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**Date**: 2026-05-17
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**Cycle**: 1
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**Complexity**: 2 points
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## Task Results
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| Task | Status | Files Modified | Tests | AC Coverage | Issues |
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|------|--------|----------------|-------|-------------|--------|
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| AZ-446_csv_reporter_refinements | Done | 1 source (nfr_recorder), 2 scenarios (nft_res_03 + nft_perf_01), 1 unit test (test_nfr_recorder) | pass | 3/3 | F1 Low (CI naming semantics, in-scope), F2 Medium (carry-over from batch 88, not in scope) |
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## AC Test Coverage: All covered (3 of 3 ACs)
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## Code Review Verdict: PASS_WITH_WARNINGS
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See `_docs/03_implementation/reviews/batch_89_review.md`. 0 Critical / 0 High / 1 Medium (cumulative-review carry-over from batches 85–88: `write_csv_evidence` + `_resolve_fixture_path` duplication is outside AZ-446 scope — surfaces again at the next cumulative review) / 1 Low (empirical-CI naming semantics, documented in nfr_recorder docstring).
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## Auto-Fix Attempts: 0
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## Stuck Agents: None
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## Test Results
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- `e2e/_unit_tests/reporting/test_nfr_recorder.py` — 14 tests pass (8 pre-existing + 6 new for AZ-446 band/CI behavior).
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- Full e2e unit-test suite: **1229 passed in 134 s** (+6 vs. batch 88).
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- No scenario-level regressions: NFT-RES-03 + NFT-PERF-01 scenarios continue to skip cleanly via `sitl_replay_ready` / `tier2_only` gating in the Tier-1 docker harness.
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## API Change Summary
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`_NfrRecorder.record_metric` (and the underlying `_RunAggregator`):
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```python
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record_metric(
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name, value, ac_id=None, *,
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band: str | None = None,
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ci95_low: float | None = None,
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ci95_high: float | None = None,
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)
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```
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- All new params kw-only, default `None` — fully backwards compatible.
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- Unbalanced `ci95_*` → `ValueError`.
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New artifact:
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- `<evidence_dir>/report.csv` (one row per (scenario, metric)) —
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columns: `scenario_id, metric_name, value, value_band, ci95_low,
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ci95_high, ac_id, outcome`. Emitted once per pytest session by
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`_PluginHooks.pytest_sessionfinish` (AC-3).
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`regression-baseline.json` schema is unchanged (flat `{metric:
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numeric}`) to preserve the diff contract used by regression-detection
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tooling.
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## Next Batch: None — all selected test-implementation tasks are done (Step 10 Implement Tests complete for cycle 1).
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# Code Review Report
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**Batch**: 89 — AZ-446 (CSV reporter refinements)
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**Date**: 2026-05-17
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**Verdict**: PASS_WITH_WARNINGS
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## Scope
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Files modified:
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- `e2e/runner/reporting/nfr_recorder.py` — extended `record_metric`
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with `band`, `ci95_low`, `ci95_high` (kw-only); added
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`_RunAggregator.emit_per_metric_report` and a `pytest_sessionfinish`
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call to it; introduced `_stringify` helper. No backwards-incompatible
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changes (existing 4-arg callers keep working).
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- `e2e/tests/resilience/test_nft_res_03_monte_carlo.py` — passes band
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for AC-1 (`iteration_count`) and AC-3 (`envelope_ratio`) and
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computes per-iteration empirical ci95 for `envelope_ratio`.
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- `e2e/tests/performance/test_nft_perf_01_e2e_latency.py` — passes
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band for AC-4 (`frame_drop_ratio`) and AC-2/AC-3 (`latency_ms_p95`);
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computes empirical 2.5/97.5 percentile of the raw latency samples as
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ci95 for p50/p95/p99.
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- `e2e/_unit_tests/reporting/test_nfr_recorder.py` — 6 new tests
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covering band+CI persistence, value-error on unbalanced CI, the
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new `report.csv` columns, explicit-path overload, and end-to-end
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emission via the pytest plugin.
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## Findings
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| # | Severity | Category | File:Line | Title |
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|---|----------|----------|-----------|-------|
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| 1 | Low | Style | n/a | "Empirical CI" naming clarification — `ci95_low`/`ci95_high` are emitted as the central 95% range of the underlying sample distribution, not a confidence interval on a point estimator |
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| 2 | Medium | Maintainability | `e2e/runner/helpers/*_evaluator.py`, `e2e/tests/resource_limit/*` | Carried over from batches 85–87 and 88: duplicated `write_csv_evidence` + `_resolve_fixture_path` boilerplate. NOT in AZ-446 scope (AZ-446 is reporting-only). Tracked separately. |
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No Critical / High / Security findings.
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## Finding Details
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### F1: Empirical CI naming clarification (Low / Style)
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- Location: `e2e/runner/reporting/nfr_recorder.py` (docstring) +
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`_percentile_pair` helpers in NFT-RES-03 and NFT-PERF-01.
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- Description: the task spec says "Monte Carlo confidence intervals
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where applicable." The implementation emits the empirical 2.5/97.5
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percentile of the underlying sample distribution. For
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`nft_res_03.envelope_ratio` this is the spread of per-iteration
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ratios — a defensible MC bootstrap-like signal. For
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`nft_perf_01.latency_ms_p{50,95,99}` it is the range of raw
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per-frame latency samples, NOT a CI on the percentile estimator. A
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parametric CI on the percentile would require a bootstrap loop
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(resampling) that materially expands the scope.
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- Resolution: docstring spells the semantics out; downstream tooling
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reads the same column whether the source is parametric or
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empirical. Acceptable trade-off for the 2-point task.
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- Tasks: AZ-446.
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### F2: Cumulative-review carry-over from batch 88 (Medium / Maintainability)
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- Location: `e2e/runner/helpers/{memory,fdr_size,storage,thermal_envelope}_evaluator.py`
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and `e2e/tests/resource_limit/test_nft_lim_*_*.py`.
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- Description: AZ-446 was speculatively expected to absorb the
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cumulative-review carry-over for `write_csv_evidence` and
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`_resolve_fixture_path` duplication. Re-examining: AZ-446's spec is
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reporting-only (band annotations + CI95 columns on the per-metric
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`report.csv` + nfr_recorder API). The carried-over duplications live
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in evaluator helpers and scenario boilerplate, both outside the
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AZ-446 ownership envelope. A separate maintenance-only PBI is
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required.
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- Resolution: not addressed in this batch. The next cumulative review
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(batches 88–90) will re-flag it; if the user wants it consolidated
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sooner, a small "PBI" should be opened.
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- Tasks: not AZ-446.
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## AC Test Coverage
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| Task | ACs | Coverage |
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|------|-----|----------|
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| AZ-446 | AC-1 (band) | Covered — `test_record_metric_band_kwarg_stored_in_internal_record`, `test_emit_per_metric_report_writes_csv_with_band_and_ci`, and the scenario callers in `test_nft_res_03_monte_carlo.py` + `test_nft_perf_01_e2e_latency.py`. The `report.csv` header always carries `value_band` (column exists per AC wording). |
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| AZ-446 | AC-2 (CI95 for Monte Carlo + N-sample) | Covered — `test_record_metric_ci95_pair_stored_in_internal_record`, `test_record_metric_ci95_unbalanced_rejected_via_fixture_wrapper`, `test_emit_per_metric_report_writes_csv_with_band_and_ci`, end-to-end `test_per_metric_report_emitted_in_pytest_run`. NFT-RES-03 + NFT-PERF-01 callers pass the new args. |
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| AZ-446 | AC-3 (parameterization — once per CI invocation) | Covered — the `report.csv` artifact is emitted from `pytest_sessionfinish` (single emission per session, regardless of how many parametrize combinations ran). End-to-end fixture-run unit test verifies emission. |
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## Verdict Logic
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- Critical: 0
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- High: 0
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- Medium: 1 (carry-over from batch 88, not in AZ-446 scope)
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- Low: 1 (in-scope, documented in docstring)
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→ **PASS_WITH_WARNINGS**
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## Architecture Compliance (Phase 7)
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- All edits inside `e2e/**` (owned by `blackbox_tests`). No new
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imports from `src/gps_denied_onboard`. No new cyclic dependencies;
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`nfr_recorder` only adds new public methods + a private helper.
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- Public-API change is purely additive: `_NfrRecorder.record_metric`
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added kw-only `band`/`ci95_low`/`ci95_high` parameters with default
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`None`; `_RunAggregator.record_metric` mirrors them. Existing
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positional + named callers remain valid.
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