The #160 contract test keeps the dense profile's longTasks block equal to
the historical isometric one, and both profiles boot through the same lazy
iso-scene-render chunk; the accepted split applies to both. Validate
34356856702 caught the divergence.
Issue: #507
User-Visible: no
Release: v1.73.0
Full Performance of the v1.73.0 stable candidate against the v1.72.0 product
(run 34354409872) was red on one check of the isometric profile:
longTask.countP95 16 → 20 against max(16×1.2, 16+3) = 19.2, with every
timing, longTask.totalP95Ms and longTask.maxSingleMs green. The trace behind
#506 shows why: since v1.73.0-beta.1 the isometric renderer is the lazy
iso-scene-render chunk (#160 Stage 3), so the single v1.72.0 boot task is
split in two around that import — the same work, +2 tasks.
Owner decision 2026-09-09: accept the split. countNoiseAllowance 3 → 5 for
large-house-isometric-v1 only; the ratio, the hard ceiling, total and
maximum single task keep gating real growth. The downloaded CI artefact
re-evaluated with this budget passes (limit 21, actual 20, no failures).
Documented in demo/performance/README.md; the budget test pins the
allowance and the untouched profiles.
Issue: #507
User-Visible: no
Release: v1.73.0
Классификация changes вынесена в scripts/classify-changes.mjs (выходы
perf_iso/perf_interaction, fallback --all). performance_smoke добавляет
large-house-isometric-v1 при правке src/iso-* и large-house-interaction-v1
при правке живого пути, по 3 образца против hardMaxMs полных профилей
(budgets-*-smoke.json). Набор профилей входит в ключ reuse. PROCESS.md §8.
Issue: #473
User-Visible: no
Codex