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M5.7: cargo xtask bench — render benchmark history + CPU-time regression check

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Brandon Thomas
2026-10-01 09:25:13 -04:00
co-authored by Claude Opus 5.5
parent b13274f711
commit e0feb47ab8
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AGENTS.md
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@@ -59,6 +59,8 @@ and often so a crash loses minutes, not hours.
`apps/lightcraft-cli/tests/`). New features need at least one test that would fail without them.
- **Run the app after every user-visible change**: launch with `--control 7980`, drive it with a JSON-lines script
(`docs/showcase/run.py file.jsonl`), take `ui.screenshot`, and look at it. Check `ui.inspect` → `perf`.
- **Benchmarks:** `cargo xtask bench` (24 MP raw from corpus; CPU and GPU columns) appends to `target/bench/history.jsonl`
and flags CPU-time regressions > 20 % vs the previous run (`--strict` to fail). Run it before and after perf work.
- **Measure, don't guess**: `LIGHTCRAFT_PROFILE=1` prints per-stage pipeline timings to stderr; time CLI renders
with `/usr/bin/time`. Record numbers in `plan/STATUS.md` → Metrics. Budgets: slider update ≤ 16 ms (draft) / loupe
≤ 60 ms on ~2.5 MP; export ≤ 1 s per 24 MP JPEG.