chore: record salary W4 blocked checkpoint

changes/n05-salary-calc/.superpowers/sdd/plans/r1-77341d6e000ef1624d59d66b8b361c24e7ef8f1b5d065dd4d648a2a7537e72d5/checkpoints/8.md

@@ -0,0 +1,37 @@
+---
+task_id: "8"
+task_hash: "sha256:2853a7746ebea9c39b2f8b1256abf759359c0d68f8581073655e43c461a23be0"
+next: "Task 9: disposable Docker MySQL black-box acceptance; blocked by missing Docker runtime"
+completed: "Salary 24/24 tests, OpenAPI 139/178, API/frontend/roadmap docs, disposable-container black-box script"
+evidence: "mvn -Dtest=Salary*Test test: 24/24; python docs/verify_openapi.py: pass"
+review: ".superpowers/sdd/reviews/W4-blocked.md"
+risk: "Docker CLI/service absent; resident MySQL 3307 prohibited for W4"
+commit_start: "27dbc095e0413f9566bcc4ddc3bdb4f642535a6b"
+commit_end: "c93b0d61fe547844f6ba29b74457670ed7f00c93"
+created_at: "2026-09-20T08:56:41.205Z"
+plan_hash: "sha256:77341d6e000ef1624d59d66b8b361c24e7ef8f1b5d065dd4d648a2a7537e72d5"
+plan_revision: 1
+---
+
+# Checkpoint: 8
+
+## Next
+Task 9: disposable Docker MySQL black-box acceptance; blocked by missing Docker runtime
+
+## Completed
+Salary 24/24 tests, OpenAPI 139/178, API/frontend/roadmap docs, disposable-container black-box script
+
+## Evidence
+mvn -Dtest=Salary*Test test: 24/24; python docs/verify_openapi.py: pass
+
+## Review
+.superpowers/sdd/reviews/W4-blocked.md
+
+## Risk
+Docker CLI/service absent; resident MySQL 3307 prohibited for W4
+
+## Commit Start
+27dbc095e0413f9566bcc4ddc3bdb4f642535a6b
+
+## Commit End
+c93b0d61fe547844f6ba29b74457670ed7f00c93