Command namespace collision: quickviz to glyph

PR #3301. Type a prefix the way you would in the slash-command menu and see what the autocomplete would offer you, against the real 450-name corpus.

1. Try the prefix yourself

2. Why this one mattered more than a normal collision

  /quit  is a BUILT-IN that ends the session immediately.
  It shares the prefix "qui" with /ork:quickviz and sorts first.

  Selecting the wrong row does not show a wrong page.
  It ends the session, losing the unsaved turn.

  Every other near-miss in this namespace is recoverable.
  This one was not, which is what made it worth renaming.

3. How the name was chosen (measured, not preferred)

Two independent axes. A name has to win both. The bar shows pre-existing uses of the word in this repo, where shorter is better.

CandidateUnique atNamespace neighbours Already used in repoVerdict

4. The cost that was accepted, not hidden

glyph wins the namespace test outright, but the word already appears 218 times across 68 files in this repo as the domain term for a single box-drawing or dingbat character, including rules/status-glyph-vocabulary.md and posttool/code-comment-glyph-warn.ts. So git grep glyph no longer isolates skill references. etch and boxart were clean on both axes and were offered; glyph was chosen anyway for reading better at the call site. This is a naming trade-off, not a technical hazard: the rename substitutes the token quickviz, so all 218 existing uses are untouched.