Record artifact-store MinIO lane progress

workplans/CUST-WP-0051-infrastructure-stabilization-metaplan.md

@@ -300,6 +300,22 @@ Progress 2026-06-27:
   artifact-store D7.1/D7.2 remains open; staged-promotion T02 is now complete
   before broad production source-forge migration work.
 
+Progress 2026-06-27 artifact-store D7.1/D7.2:
+
+- Advanced `/home/worsch/artifact-store` `ARTIFACT-STORE-WP-0007`: D7.1 is
+  done with `docs/minio-compatibility-landscape-2026-06-27.md`, deciding to
+  pursue a compatibility profile instead of a direct MaxIO server fork.
+- D7.2 is now `progress` with an opt-in live MinIO compatibility pytest harness
+  (`tests/integration/test_storage_s3_minio.py`), `make test-minio`, and manual
+  smoke docs in `docs/OPERATOR.md`.
+- Verified artifact-store with `make test` (`110 passed, 2 skipped`), targeted
+  Ruff checks for the new harness, direct harness execution (`2 skipped` without
+  endpoint variables), and `git diff --check`. Repo-wide `make lint` still
+  reports pre-existing Ruff format drift in seven untouched files.
+- Remaining artifact-store gate is live evidence: run D7.2 against an approved
+  MinIO-compatible endpoint with non-secret health, round-trip, and multipart
+  output. D7.3 STS vending remains identity/platform-routed work.
+
 Progress 2026-06-27 staged promotion:
 
 - Completed `RAIL-BS-WP-0006-T02` in `/home/worsch/railiance-cluster`.