feat: test bootstrap, regression tests, coverage audit, retro test health

- Add {{TEST_BOOTSTRAP}} resolver to gen-skill-docs.ts
- Add Phase 8e.5 regression test generation to /qa and /qa-design-review
- Add Step 3.4 test coverage audit with quality scoring to /ship
- Add test health tracking to /retro
- Add 2 E2E evals (bootstrap + coverage audit)
- Add 26 validation tests
- Update ARCHITECTURE.md placeholder table
- Add 2 P3 TODOs (CI/CD non-GitHub, auto-upgrade weak tests)

qa/templates/qa-report-template.md

@@ -86,6 +86,22 @@
 
 ---
 
+## Regression Tests
+
+| Issue | Test File | Status | Description |
+|-------|-----------|--------|-------------|
+| ISSUE-NNN | path/to/test | committed / deferred / skipped | description |
+
+### Deferred Tests
+
+#### ISSUE-NNN: {title}
+**Precondition:** {setup state that triggers the bug}
+**Action:** {what the user does}
+**Expected:** {correct behavior}
+**Why deferred:** {reason}
+
+---
+
 ## Ship Readiness
 
 | Metric | Value |