feat(ECR-009): Ops-D order filters, plan display prices, refund status

LOOP-RUN-002 sample: admin order multi-filter, membership display
price catalog, read-only refund_status. No real payment or RBAC.

Co-authored-by: Cursor <cursoragent@cursor.com>

loop/artifacts/test_report.json

@@ -0,0 +1,16 @@
+{
+  "artifact_schema": {
+    "version": 1
+  },
+  "result": "PASS",
+  "tests": {
+    "total": 1,
+    "failed": 0,
+    "passed": 1
+  },
+  "commands": [
+    "go test ./internal/integration/ -run TestOpsCommercePhaseD",
+    "npm run build (admin-h5)"
+  ],
+  "notes": "LOOP-RUN-002 Validator"
+}