[thomasorgeval]

Summary

• Reuse the active locale's Intl.DateTimeFormat when formatting Analysis chart period labels instead of repeating ICU formatter setup for every title and accessibility label.
• Internal benchmark: 43 monthly buckets / 88 label calls per pass improved from 13.84 ms to 2.27 ms median (83.6% less helper time) on Node v26.9.0.
• Add regression coverage for single dates, date ranges, formatter reuse, and switching locales in both directions.

Expected impact

• Remove repeated formatter construction during Analysis chart change detection while preserving UTC formatting and localized output.
• Retain at most one formatter; changing locale replaces it. Alternating locales intentionally reconstruct the formatter rather than growing a cache.
• The benchmark measures the actual helper, not Angular rendering or browser latency. Browser/end-to-end impact is unmeasured.

Verification

• Runtime: repository mise configuration, Node v26.9.0 and pnpm 12.5.1 (matching packageManager and engines).
• pnpm exec vitest run apps/web/src: 8 files, 29 tests passed.
• pnpm nx typecheck web: passed.
• pnpm nx lint web: passed.
• pnpm nx build web: production build passed.
• pnpm exec oxfmt --check apps/web/src/app/pages/analysis/analysis-trend.ts apps/web/src/app/pages/analysis/analysis-trend.spec.ts: passed.
• git diff --check: passed.
• Benchmark command, run before and after with the repository's mise exec -- prefix: node /home/thomas/.hermes/autonomous-coding/runs/20261015T060026Z/artifacts/bibliocards__reviewinbox__bolt-optimizer/benchmark-trend.mjs "$PWD/apps/web/src/app/pages/analysis/analysis-trend.ts".
• Deterministic synthetic March 2023–September 2026 history; French labels, twice per bucket plus both endpoints (matching template calls). 20 warmup passes, 9 samples of 100 passes; median time per pass reported. Output-length checksums matched. Harness and raw before/after JSON are stored only in the agent artifact directory, not committed.

[chatgpt-codex-connector]

Codex Review Summary

This comment shows the latest Codex review activity on this pull request.

Review	Status	Commit	Review trigger
📝 Code Review	✅ Completed 2026-10-15T07:56:01.506633Z	0897074	Draft marked ready
🔒 Security Review	✅ Completed 2026-10-15T07:57:17.944837Z	0897074	Draft marked ready

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