feat(qa): carve QA patterns + health rubric into on-demand sections (68→48KB skeleton)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

qa/sections/manifest.json

@@ -0,0 +1,20 @@
+{
+  "$schema": "https://gstack.dev/schemas/section-manifest.json",
+  "skill": "qa",
+  "version": 1,
+  "note": "PASSIVE registry (v2 plan T9 / CM2). Fields are IDs, file paths, human titles, and human-readable trigger text ONLY. The skeleton's decision-tree prose is the ONLY place that decides WHEN to read a section; required-reads live in the E2E fixtures. No machine predicate here — see docs/designs/v2_PLAN.md:663.",
+  "sections": [
+    {
+      "id": "test-bootstrap",
+      "file": "test-bootstrap.md",
+      "title": "Test Framework Bootstrap",
+      "trigger": "checking the project's test framework during Setup — ecosystem-marker detection, the bootstrap offer, framework install, CI pipeline generation, and first real tests (also needed at Phase 8e.5 if you skipped it and a regression test now requires a framework)"
+    },
+    {
+      "id": "qa-patterns",
+      "file": "qa-patterns.md",
+      "title": "Core QA patterns — modes, Phases 1-6 workflow, health rubric, framework guidance, testing rules",
+      "trigger": "running the QA baseline (Phases 1-6) — mode selection (Diff-aware/Full/Quick/Regression), the phase-by-phase browser workflow, the Health Score Rubric, framework-specific guidance, and the browser-testing Important Rules"
+    }
+  ]
+}