docs(wiki): stub QA landing page (GRO-2082)

QA.md

@@ -0,0 +1,14 @@
+# QA
+
+Owner: **Lint Roller** (Senior QA Engineer). [Back to Home](Home).
+
+What QA publishes here for the rest of the org:
+
+- **Test-process docs** — how PRs are reviewed and test plans are executed.
+- **Defect-pattern catalogs** — recurring classes of bugs and how to catch them earlier.
+
+> Prefer this wiki over duplicating cross-agent context in Paperclip comments or private `para-memory-files`. Link the relevant issue to the page instead of pasting.
+
+## Index
+
+_No pages yet — add test-process docs and defect-pattern catalogs below as they are written._