v0.6.1

A clean finished checkpoint: the remaining LOW items from the v0.6.0 review are
closed and dead parameters removed. No behavior change beyond the fixes; profiles
from earlier versions keep working unchanged.

Fixed

• The QA gate now verifies a number_format role's mask against the SHELL's
  actually-used formats (the shell-backed peer of the schema's intra-profile
  check), so a fabricated/hand-edited mask is caught at verify time, never applied.
• A table/KPI/SmartArt block rendered against a profile with no matching role
  no longer falls back to the default style SILENTLY: it surfaces an INFO
  style_fallback so the missing brand style is visible in QA (the content still
  renders).

Changed

• Removed dead parameters (no behavior change): run_qa's never-read mode, the
  docx _write_block profile arg, and the xlsx _resolve_named_target findings
  arg.

Tests

• Closed the review's remaining coverage gaps: strict-mode promotion of
  visual.ocr_degraded to an error, _ocr_png timeout/OSError degradation, the
  Quick-Look-absent render degrade, the QA-gate fabricated-mask rejection, and the
  style_fallback path.