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* feat(a11y): auto-tag Apply tags headings by size and weight Apply now chooses H1-H6 or P per text object instead of P for all. The body style is the half-point size showing the most characters (bold when most of those are bold). A short object (at most 3 lines, 200 characters, with a letter) is a heading when it is 1.15x the body, or bold at 0.9x the body over a regular body in at most 2 lines. Heading styles rank across the document, larger and bolder first, capped at H6, and a level never skips past the one before it so heading-nesting passes. Size is Tf x Tm x CTM with q/Q tracked; bold is Metrics.bold. Text in render mode 3 (an OCR layer) is not counted. Font metrics are measured once per font object per document, at most 256 fonts. AutoTagResult gains a headings count. Parity, gaps, roadmap and the apply tool's note say headings are tagged. Fixes #7062. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * fix(a11y): rank heading styles by map and skip clip-only text Look up each heading style's rank in a map built once after sorting, so ranking is linear in the number of text objects. Text in render mode 7 (clip only) paints nothing, so it is excluded from heading evidence like mode 3. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: KenM76 <KenM76> Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>