docs(09-tooling-portable-setup-01): add self-check to SUMMARY.md

.planning/phases/09-tooling-portable-setup/09-01-SUMMARY.md

@@ -145,5 +145,18 @@ None - no external service configuration required. Run `docker/build.sh` to rebu
 
 ---
 
+## Self-Check: PASSED
+
+All files and commits verified:
+- ✅ `docker/Dockerfile` exists (112 lines)
+- ✅ `docker/build.sh` exists (26 lines, executable)
+- ✅ `09-01-SUMMARY.md` exists
+- ✅ Commit `78fd400` — feat: Dockerfile creation
+- ✅ Commit `2797a64` — feat: build.sh + verification + fixes
+- ✅ Commit `cc1da75` — docs: D-04/D-05 references
+- ✅ Commit `717bb6f` — docs: plan SUMMARY
+
+---
+
 *Phase: 09-tooling-portable-setup*
 *Completed: 2026-06-15*