v0.14.0 — sheleg-dev

• frontend-performance/SKILL.md gains Test browser — WebKit (Safari) first:
  Safari through safaridriver, Playwright webkit (--browser webkit,
  npx playwright install webkit), Safari Web Inspector's Timelines, and
  open -a Safari <url> on macOS rather than the system default browser.
• Lighthouse, PageSpeed Insights, CrUX, CDP traces and the chrome-devtools MCP stay
  as the stated Chromium exception (Chromium by definition): Chrome Dev, a
  temporary profile, every started process closed. A page checked only in Chromium
  is reported as exactly that; a Lighthouse score is not a cross-browser verdict.
• The Measure and Validate steps run the WebKit pass too; Degradation names the
  WebKit channels; the contrast check in references/accessibility-perf.md starts
  in Safari Web Inspector.
• New regression test/audit_regressions/safari-first.py with drop mutations. Text
  integrity only; no hook or script behaviour changed.