v1.91.9.0 feat: test value bar in plan-eng-review, review, qa and ship, plus /test-audit (#2998)

gstack/llms.txt

@@ -65,6 +65,7 @@ Conventions:
 - [/skillify](skillify/SKILL.md): Codify the most recent successful /scrape flow into a permanent browser-skill on disk.
 - [/spec](spec/SKILL.md): Turn vague intent into a precise, executable spec in five phases.
 - [/sync-gbrain](sync-gbrain/SKILL.md): Keep gbrain current with this repo's code and refresh agent search guidance in CLAUDE.md.
+- [/test-audit](test-audit/SKILL.md): Find low-value or duplicate tests and the test-only code they keep alive.
 - [/unfreeze](unfreeze/SKILL.md): Clear the freeze boundary set by /freeze, allowing edits to all directories again.
 
 ## Browse Commands