baseline.json

{
  "meta": {
    "commit": "116ded9368585f82de38cd7ae4421d320a140e9a",
    "date": "2026-08-19",
    "environment": "macOS 25.4.0 arm64, headless Chrome via lighthouse 12, site served by python -m http.server on loopback",
    "tools": {
      "lighthouse": "12",
      "node": "26.7.0",
      "python": "3.12"
    },
    "scope": "Every page the published cohorts render: the index, how-we-grade, one page per file row of the 2026-08-19 JSON cohort (17) and the 2026-08-19 CSV cohort (25), and 404.html. Every score below is the minimum observed across all of them, not an average and not the best page. Re-measured when the site grew from 6 file pages to 17, and re-audited on the publish path when it grew to 42: the counts here describe pages that are actually audited, so growing a cohort without the audit passing fails the deploy rather than shipping a figure measured over a smaller site.",
    "pages_audited": 45,
    "file_pages": 42,
    "k6": "N/A. There is no server: the published artifact is static files on GitHub Pages, so there is no request-latency budget to measure. PERFORMANCE-STANDARD section 1's p95 rows are null below rather than silently absent."
  },
  "floors": {
    "accessibility": 1.0,
    "best-practices": 1.0,
    "seo": 1.0,
    "performance": 0.95
  },
  "metrics": {
    "accessibility": 1.0,
    "best-practices": 1.0,
    "seo": 1.0,
    "performance": 1.0,
    "max_total_transfer_bytes": 52404,
    "max_requests_per_page": 1,
    "p95_ms": null,
    "llm_first_token_ms": null,
    "llm_full_response_ms": null,
    "js_kb_gzip": 0
  },
  "direction": {
    "accessibility": "higher_is_better",
    "best-practices": "higher_is_better",
    "seo": "higher_is_better",
    "performance": "higher_is_better",
    "max_total_transfer_bytes": "lower_is_better",
    "max_requests_per_page": "lower_is_better",
    "js_kb_gzip": "lower_is_better"
  },
  "notes": [
    "The accessibility floor is 1.0, not the standard's 0.90. ACCESSIBILITY-STANDARD section 1 says a repository that declares a higher floor enforces the higher value. On a static site with no JavaScript there is no honest reason for a 0.99: every point below 100 is a specific element a specific person cannot use.",
    "max_total_transfer_bytes rose from 12,197 to 34,938 when the cohort grew from 6 graded files to 17, and to 52,404 when the CSV cohort added its section: the heaviest page is still the index, now carrying two clearly scoped cohort sections, 42 file cards, and every recorded exclusion with its cross-reference. That is content, not weight -- the request count is still 1 and there is still no script, stylesheet, font, image, or third party on any page -- and it remains inside the 61,440-byte document budget in perf/resource-budget.json. The number is refreshed rather than ratcheted because it is a measurement of the artifact, not a target.",
    "These were measured after two real defects were fixed. Before the fix the index scored 0.98 on accessibility (axe heading-order: the file cards' h3 followed h1 with no h2) and every file page carrying a warning finding scored 0.95 (axe color-contrast: the FINDINGS chip was 4.28:1 against its wash, below the 4.5:1 of SC 1.4.3). Both shipped publicly because the portfolio registry recorded this repository as having no HTML surface, so the accessibility gates were scoped out of a site that was already live."
  ]
}