Record Case model admission evidence

tools/validate_cto_child.py

@@ -382,6 +382,20 @@ REQUIRED_MODEL_PROVIDER_ADMISSION_PRD_PHRASES = [
     "No secrets appear in task file, argv, report, trace, backend logs, SOT, or commits.",
     "4500082 Gate Case execution on admitted model",
     "model_provider_gate_blocks",
+    "f39d8ab Require admitted Case model pair",
+    "CTO_HARNESS_CASE_MODEL_ADMISSION_FILE",
+    "Env provider/model is now a requested pair, not admission authority.",
+    "The admission JSON is the authority for real Case Stage 2 model admission.",
+    "admitted",
+    "missing_admission",
+    "mismatch",
+    "invalid_admission",
+    "not_admitted",
+    "report.md",
+    "Case stdout/stderr",
+    "20260531T235421Z-r1-string-slugify-1875638",
+    "20260531T235448Z-r1-string-slugify-1876884",
+    "`CTO-WORK-020` remains blocked because no real provider/model has been approved and no real Case Stage 2 pass report exists.",
 ]
 
 REQUIRED_MODEL_PROVIDER_ADMISSION_ISSUE_IDS = [