diff --git a/registry/index.json b/registry/index.json
index 75441ca..acf2112 100644
--- a/registry/index.json
+++ b/registry/index.json
@@ -16,7 +16,7 @@
         "vscode"
       ],
       "package_metadata": "registry/packages/yao-meta-skill.json",
-      "package_sha256": "f6672acad15cd131632032e808c09ee71ea1da1b4714cfedcf8dd35b0808fcf5"
+      "package_sha256": "7bd945074bb9066661e3f4f1c2b45a6147d0bdd467cadc3e96af1ce129dc3397"
     }
   ]
 }
diff --git a/registry/packages/yao-meta-skill.json b/registry/packages/yao-meta-skill.json
index b9c303d..5e78082 100644
--- a/registry/packages/yao-meta-skill.json
+++ b/registry/packages/yao-meta-skill.json
@@ -16,8 +16,8 @@
   "trust_level": "local",
   "license": "MIT",
   "checksums": {
-    "package_sha256": "f6672acad15cd131632032e808c09ee71ea1da1b4714cfedcf8dd35b0808fcf5",
-    "archive_sha256": "7b0683ec4b2e6cf991a023ca137f5734612c64410a8a0b5fc2adae97595b470f"
+    "package_sha256": "7bd945074bb9066661e3f4f1c2b45a6147d0bdd467cadc3e96af1ce129dc3397",
+    "archive_sha256": "0488c5b84d906354c41570de908244ed8af5d55b55f3f01f94bdfdff99851798"
   },
   "compatibility": {
     "openai": "pass",
@@ -48,7 +48,7 @@
   },
   "distribution": {
     "archive_verified": true,
-    "archive_sha256": "7b0683ec4b2e6cf991a023ca137f5734612c64410a8a0b5fc2adae97595b470f",
+    "archive_sha256": "0488c5b84d906354c41570de908244ed8af5d55b55f3f01f94bdfdff99851798",
     "package_verification": "reports/package_verification.json",
     "install_simulated": true,
     "install_simulation": "reports/install_simulation.json"
diff --git a/reports/architecture_maintainability.json b/reports/architecture_maintainability.json
index 92832a7..1ff346c 100644
--- a/reports/architecture_maintainability.json
+++ b/reports/architecture_maintainability.json
@@ -83,7 +83,7 @@
     },
     {
       "path": "tests/verify_review_studio.py",
-      "lines": 679,
+      "lines": 680,
       "kind": "test",
       "severity": "pass",
       "recommendation": "Break broad integration assertions into focused verifier helpers when the next behavior change lands."
diff --git a/reports/architecture_maintainability.md b/reports/architecture_maintainability.md
index 9aa4bd2..54b6126 100644
--- a/reports/architecture_maintainability.md
+++ b/reports/architecture_maintainability.md
@@ -34,7 +34,7 @@ No file-size hotspots found.
 | `scripts/optimize_description.py` | `723` | `cli-script` | `pass` |
 | `scripts/trust_check.py` | `714` | `internal-module` | `pass` |
 | `scripts/render_review_viewer.py` | `685` | `cli-script` | `pass` |
-| `tests/verify_review_studio.py` | `679` | `test` | `pass` |
+| `tests/verify_review_studio.py` | `680` | `test` | `pass` |
 | `scripts/skill_report_layout.py` | `653` | `internal-module` | `pass` |
 | `scripts/render_reference_synthesis.py` | `644` | `cli-script` | `pass` |
 
diff --git a/reports/context_budget.json b/reports/context_budget.json
index a0f6c63..4ab439d 100644
--- a/reports/context_budget.json
+++ b/reports/context_budget.json
@@ -6,15 +6,15 @@
     "context_budget_tier": "production",
     "context_budget_limit": 1000,
     "skill_body_tokens": 767,
-    "other_text_tokens": 1203641,
+    "other_text_tokens": 1204831,
     "estimated_initial_load_tokens": 960,
-    "estimated_total_text_tokens": 1204408,
-    "deferred_resource_tokens": 388115,
+    "estimated_total_text_tokens": 1205598,
+    "deferred_resource_tokens": 388240,
     "deferred_resource_warn_threshold": 120000,
     "deferred_resource_dirs": [
       {
         "path": "scripts",
-        "estimated_tokens": 340379,
+        "estimated_tokens": 340504,
         "file_count": 97
       },
       {
@@ -31,7 +31,7 @@
     "large_deferred_resource_dirs": [
       {
         "path": "scripts",
-        "estimated_tokens": 340379,
+        "estimated_tokens": 340504,
         "file_count": 97
       }
     ],
@@ -54,14 +54,14 @@
           ],
           "missing": [],
           "path": "scripts",
-          "estimated_tokens": 340379,
+          "estimated_tokens": 340504,
           "file_count": 97,
           "rationale": "Script resources are deterministic deferred tools, not initial-load prompt context."
         }
       ],
       "summary": "Large deferred resources are indexed and backed by evidence."
     },
-    "relevant_file_count": 509,
+    "relevant_file_count": 510,
     "unused_resource_dirs": [],
     "quality_signal_points": 130,
     "quality_density": 135.4
diff --git a/reports/context_budget.md b/reports/context_budget.md
index 133ee56..10efaf4 100644
--- a/reports/context_budget.md
+++ b/reports/context_budget.md
@@ -2,7 +2,7 @@
 
 | Target | Path | Tier | Limit | Initial | SKILL | Deferred | Resource Governance | Large Deferred Dirs | Quality Density | Unused Dirs | Status |
 | --- | --- | --- | ---: | ---: | ---: | ---: | --- | --- | ---: | --- | --- |
-| root | `.` | `production` | 1000 | 960 | 767 | 388115 | `governed` | scripts:340379 | 135.4 | - | ok |
+| root | `.` | `production` | 1000 | 960 | 767 | 388240 | `governed` | scripts:340504 | 135.4 | - | ok |
 | complex-release-orchestrator | `examples/complex-release-orchestrator/generated-skill` | `production` | 1000 | 790 | 718 | 1657 | `not-required` | - | 164.6 | - | ok |
 | governed-incident-command | `examples/governed-incident-command/generated-skill` | `production` | 1000 | 760 | 658 | 1030 | `not-required` | - | 171.1 | - | ok |
 
diff --git a/reports/context_budget_summary.json b/reports/context_budget_summary.json
index ad8d9fd..9b1989d 100644
--- a/reports/context_budget_summary.json
+++ b/reports/context_budget_summary.json
@@ -8,11 +8,11 @@
       "budget_limit": 1000,
       "initial_tokens": 960,
       "skill_body_tokens": 767,
-      "deferred_resource_tokens": 388115,
+      "deferred_resource_tokens": 388240,
       "large_deferred_resource_dirs": [
         {
           "path": "scripts",
-          "estimated_tokens": 340379,
+          "estimated_tokens": 340504,
           "file_count": 97
         }
       ],
@@ -35,7 +35,7 @@
             ],
             "missing": [],
             "path": "scripts",
-            "estimated_tokens": 340379,
+            "estimated_tokens": 340504,
             "file_count": 97,
             "rationale": "Script resources are deterministic deferred tools, not initial-load prompt context."
           }
diff --git a/reports/package_verification.json b/reports/package_verification.json
index 9d4aa02..d671427 100644
--- a/reports/package_verification.json
+++ b/reports/package_verification.json
@@ -8,7 +8,7 @@
     "target_count": 4,
     "adapter_count": 4,
     "archive_present": true,
-    "archive_sha256": "7b0683ec4b2e6cf991a023ca137f5734612c64410a8a0b5fc2adae97595b470f",
+    "archive_sha256": "0488c5b84d906354c41570de908244ed8af5d55b55f3f01f94bdfdff99851798",
     "archive_entry_count": 576,
     "failure_count": 0,
     "warning_count": 0
diff --git a/reports/package_verification.md b/reports/package_verification.md
index e3a1ed8..daf8f45 100644
--- a/reports/package_verification.md
+++ b/reports/package_verification.md
@@ -4,7 +4,7 @@
 - Package directory: `dist`
 - Targets: `4 / 4` adapters present
 - Archive present: `True`
-- Archive SHA256: `7b0683ec4b2e6cf991a023ca137f5734612c64410a8a0b5fc2adae97595b470f`
+- Archive SHA256: `0488c5b84d906354c41570de908244ed8af5d55b55f3f01f94bdfdff99851798`
 - Failures: `0`
 - Warnings: `0`
 
diff --git a/reports/registry_audit.json b/reports/registry_audit.json
index d082d90..1f6abb2 100644
--- a/reports/registry_audit.json
+++ b/reports/registry_audit.json
@@ -21,8 +21,8 @@
     "trust_level": "local",
     "license": "MIT",
     "checksums": {
-      "package_sha256": "f6672acad15cd131632032e808c09ee71ea1da1b4714cfedcf8dd35b0808fcf5",
-      "archive_sha256": "7b0683ec4b2e6cf991a023ca137f5734612c64410a8a0b5fc2adae97595b470f"
+      "package_sha256": "7bd945074bb9066661e3f4f1c2b45a6147d0bdd467cadc3e96af1ce129dc3397",
+      "archive_sha256": "0488c5b84d906354c41570de908244ed8af5d55b55f3f01f94bdfdff99851798"
     },
     "compatibility": {
       "openai": "pass",
@@ -53,7 +53,7 @@
     },
     "distribution": {
       "archive_verified": true,
-      "archive_sha256": "7b0683ec4b2e6cf991a023ca137f5734612c64410a8a0b5fc2adae97595b470f",
+      "archive_sha256": "0488c5b84d906354c41570de908244ed8af5d55b55f3f01f94bdfdff99851798",
       "package_verification": "reports/package_verification.json",
       "install_simulated": true,
       "install_simulation": "reports/install_simulation.json"
@@ -78,7 +78,7 @@
           "vscode"
         ],
         "package_metadata": "registry/packages/yao-meta-skill.json",
-        "package_sha256": "f6672acad15cd131632032e808c09ee71ea1da1b4714cfedcf8dd35b0808fcf5"
+        "package_sha256": "7bd945074bb9066661e3f4f1c2b45a6147d0bdd467cadc3e96af1ce129dc3397"
       }
     ]
   },
diff --git a/reports/registry_audit.md b/reports/registry_audit.md
index f421b7e..00c9b00 100644
--- a/reports/registry_audit.md
+++ b/reports/registry_audit.md
@@ -6,8 +6,8 @@
 - Maturity: `governed`
 - Owner: `Yao Team`
 - License: `MIT`
-- Package SHA256: `f6672acad15cd131632032e808c09ee71ea1da1b4714cfedcf8dd35b0808fcf5`
-- Archive SHA256: `7b0683ec4b2e6cf991a023ca137f5734612c64410a8a0b5fc2adae97595b470f`
+- Package SHA256: `7bd945074bb9066661e3f4f1c2b45a6147d0bdd467cadc3e96af1ce129dc3397`
+- Archive SHA256: `0488c5b84d906354c41570de908244ed8af5d55b55f3f01f94bdfdff99851798`
 - Install simulated: `True`
 
 ## Compatibility
diff --git a/reports/review_waivers.json b/reports/review_waivers.json
index 5f4a2e6..95c9fdf 100644
--- a/reports/review_waivers.json
+++ b/reports/review_waivers.json
@@ -2,7 +2,7 @@
   "schema_version": "1.0",
   "ok": true,
   "skill_dir": ".",
-  "generated_at": "2026-06-13",
+  "generated_at": "2026-06-14",
   "summary": {
     "waiver_count": 0,
     "active_count": 0,
@@ -52,7 +52,7 @@
         "Reviewer links output_review_adjudication or output_execution evidence."
       ],
       "suggested_evidence": "reports/output_review_adjudication.md",
-      "suggested_command": "python3 scripts/yao.py review-waivers . --add-waiver --gate-key output-lab --reviewer \"<reviewer>\" --reason \"Output Lab has pending human/provider evidence; accepted only for this bounded review scope.\" --expires-at 2027-06-13 --evidence reports/output_review_adjudication.md",
+      "suggested_command": "python3 scripts/yao.py review-waivers . --add-waiver --gate-key output-lab --reviewer \"<reviewer>\" --reason \"Output Lab has pending human/provider evidence; accepted only for this bounded review scope.\" --expires-at 2027-06-14 --evidence reports/output_review_adjudication.md",
       "world_class_boundary": "Does not count as provider, human, or public world-class completion evidence."
     },
     {
@@ -67,7 +67,7 @@
         "Keep claim guard active until ledger summary.ready_to_claim_world_class is true."
       ],
       "suggested_evidence": "reports/world_class_evidence_ledger.md",
-      "suggested_command": "python3 scripts/yao.py world-class-ledger . && python3 scripts/yao.py world-class-claim-guard .",
+      "suggested_command": "python3 scripts/yao.py world-class-ledger . --submissions-dir evidence/world_class/submissions && python3 scripts/yao.py world-class-claim-guard .",
       "world_class_boundary": "Non-waivable completion boundary."
     }
   ],
diff --git a/reports/review_waivers.md b/reports/review_waivers.md
index 06b5914..a689bce 100644
--- a/reports/review_waivers.md
+++ b/reports/review_waivers.md
@@ -35,7 +35,7 @@
 - waiver allowed: `true`
 - risk: review pending 5; model-executed 0; output failures 0
 - evidence: `reports/output_review_adjudication.md`
-- verification: `python3 scripts/yao.py review-waivers . --add-waiver --gate-key output-lab --reviewer "<reviewer>" --reason "Output Lab has pending human/provider evidence; accepted only for this bounded review scope." --expires-at 2027-06-13 --evidence reports/output_review_adjudication.md`
+- verification: `python3 scripts/yao.py review-waivers . --add-waiver --gate-key output-lab --reviewer "<reviewer>" --reason "Output Lab has pending human/provider evidence; accepted only for this bounded review scope." --expires-at 2027-06-14 --evidence reports/output_review_adjudication.md`
 - world-class boundary: Does not count as provider, human, or public world-class completion evidence.
 
 #### Required Review
@@ -51,7 +51,7 @@
 - waiver allowed: `false`
 - risk: 4 pending evidence entries; 1 human pending; 3 external pending
 - evidence: `reports/world_class_evidence_ledger.md`
-- verification: `python3 scripts/yao.py world-class-ledger . && python3 scripts/yao.py world-class-claim-guard .`
+- verification: `python3 scripts/yao.py world-class-ledger . --submissions-dir evidence/world_class/submissions && python3 scripts/yao.py world-class-claim-guard .`
 - world-class boundary: Non-waivable completion boundary.
 
 #### Required Review
diff --git a/reports/security_trust_report.json b/reports/security_trust_report.json
index 0125aae..e2a7f1b 100644
--- a/reports/security_trust_report.json
+++ b/reports/security_trust_report.json
@@ -23,7 +23,7 @@
     "interactive_script_count": 0,
     "package_hash_scope": "source-contract-without-generated-reports",
     "package_hash_file_count": 181,
-    "package_sha256": "f6672acad15cd131632032e808c09ee71ea1da1b4714cfedcf8dd35b0808fcf5"
+    "package_sha256": "7bd945074bb9066661e3f4f1c2b45a6147d0bdd467cadc3e96af1ce129dc3397"
   },
   "failures": [],
   "warnings": [],
diff --git a/reports/security_trust_report.md b/reports/security_trust_report.md
index 1bdb718..95d8f25 100644
--- a/reports/security_trust_report.md
+++ b/reports/security_trust_report.md
@@ -16,7 +16,7 @@
 - Interactive scripts: `0`
 - Package hash scope: `source-contract-without-generated-reports`
 - Package hash files: `181`
-- Package SHA256: `f6672acad15cd131632032e808c09ee71ea1da1b4714cfedcf8dd35b0808fcf5`
+- Package SHA256: `7bd945074bb9066661e3f4f1c2b45a6147d0bdd467cadc3e96af1ce129dc3397`
 
 ## Failures
 
diff --git a/reports/upgrade_check.json b/reports/upgrade_check.json
index 6bdc199..aa31eb4 100644
--- a/reports/upgrade_check.json
+++ b/reports/upgrade_check.json
@@ -70,12 +70,12 @@
       {
         "field": "archive_sha256",
         "from": "",
-        "to": "7b0683ec4b2e6cf991a023ca137f5734612c64410a8a0b5fc2adae97595b470f"
+        "to": "0488c5b84d906354c41570de908244ed8af5d55b55f3f01f94bdfdff99851798"
       },
       {
         "field": "package_sha256",
         "from": "0000000000000000000000000000000000000000000000000000000000000000",
-        "to": "f6672acad15cd131632032e808c09ee71ea1da1b4714cfedcf8dd35b0808fcf5"
+        "to": "7bd945074bb9066661e3f4f1c2b45a6147d0bdd467cadc3e96af1ce129dc3397"
       }
     ]
   },
diff --git a/reports/world_class_evidence_plan.json b/reports/world_class_evidence_plan.json
index dbb5ca5..f250405 100644
--- a/reports/world_class_evidence_plan.json
+++ b/reports/world_class_evidence_plan.json
@@ -29,7 +29,7 @@
         "YAO_OUTPUT_EVAL_MODEL=gpt-4.1-mini OPENAI_API_KEY=<redacted> python3 scripts/yao.py output-exec --provider-runner openai --timeout-seconds 60",
         "python3 scripts/yao.py skill-os2-audit . --generated-at <YYYY-MM-DD>",
         "Copy evidence/world_class/templates/provider-holdout.intake.json to evidence/world_class/submissions/provider-holdout.json and fill only real evidence fields.",
-        "python3 scripts/yao.py world-class-intake ."
+        "python3 scripts/yao.py world-class-intake . --submissions-dir evidence/world_class/submissions"
       ],
       "success_checks": [
         "reports/output_execution_runs.json summary.model_executed_count > 0",
@@ -68,7 +68,7 @@
         "python3 scripts/yao.py output-review",
         "python3 scripts/yao.py skill-os2-audit . --generated-at <YYYY-MM-DD>",
         "Copy evidence/world_class/templates/human-adjudication.intake.json to evidence/world_class/submissions/human-adjudication.json and fill only real evidence fields.",
-        "python3 scripts/yao.py world-class-intake ."
+        "python3 scripts/yao.py world-class-intake . --submissions-dir evidence/world_class/submissions"
       ],
       "success_checks": [
         "reports/output_review_adjudication.json summary.pending_count == 0",
@@ -109,7 +109,7 @@
         "python3 scripts/yao.py runtime-permissions . --package-dir dist",
         "python3 scripts/yao.py skill-os2-audit . --generated-at <YYYY-MM-DD>",
         "Copy evidence/world_class/templates/native-permission-enforcement.intake.json to evidence/world_class/submissions/native-permission-enforcement.json and fill only real evidence fields.",
-        "python3 scripts/yao.py world-class-intake ."
+        "python3 scripts/yao.py world-class-intake . --submissions-dir evidence/world_class/submissions"
       ],
       "success_checks": [
         "reports/runtime_permission_probes.json summary.native_enforcement_count > 0",
@@ -150,7 +150,7 @@
         "python3 scripts/yao.py skill-atlas --workspace-root .",
         "python3 scripts/yao.py skill-os2-audit . --generated-at <YYYY-MM-DD>",
         "Copy evidence/world_class/templates/native-client-telemetry.intake.json to evidence/world_class/submissions/native-client-telemetry.json and fill only real evidence fields.",
-        "python3 scripts/yao.py world-class-intake ."
+        "python3 scripts/yao.py world-class-intake . --submissions-dir evidence/world_class/submissions"
       ],
       "success_checks": [
         "reports/adoption_drift_report.json summary.source_types.external > 0",
@@ -187,7 +187,7 @@
         "YAO_OUTPUT_EVAL_MODEL=gpt-4.1-mini OPENAI_API_KEY=<redacted> python3 scripts/yao.py output-exec --provider-runner openai --timeout-seconds 60",
         "python3 scripts/yao.py skill-os2-audit . --generated-at <YYYY-MM-DD>",
         "Copy evidence/world_class/templates/provider-holdout.intake.json to evidence/world_class/submissions/provider-holdout.json and fill only real evidence fields.",
-        "python3 scripts/yao.py world-class-intake ."
+        "python3 scripts/yao.py world-class-intake . --submissions-dir evidence/world_class/submissions"
       ],
       "success_checks": [
         "reports/output_execution_runs.json summary.model_executed_count > 0",
@@ -226,7 +226,7 @@
         "python3 scripts/yao.py output-review",
         "python3 scripts/yao.py skill-os2-audit . --generated-at <YYYY-MM-DD>",
         "Copy evidence/world_class/templates/human-adjudication.intake.json to evidence/world_class/submissions/human-adjudication.json and fill only real evidence fields.",
-        "python3 scripts/yao.py world-class-intake ."
+        "python3 scripts/yao.py world-class-intake . --submissions-dir evidence/world_class/submissions"
       ],
       "success_checks": [
         "reports/output_review_adjudication.json summary.pending_count == 0",
@@ -267,7 +267,7 @@
         "python3 scripts/yao.py runtime-permissions . --package-dir dist",
         "python3 scripts/yao.py skill-os2-audit . --generated-at <YYYY-MM-DD>",
         "Copy evidence/world_class/templates/native-permission-enforcement.intake.json to evidence/world_class/submissions/native-permission-enforcement.json and fill only real evidence fields.",
-        "python3 scripts/yao.py world-class-intake ."
+        "python3 scripts/yao.py world-class-intake . --submissions-dir evidence/world_class/submissions"
       ],
       "success_checks": [
         "reports/runtime_permission_probes.json summary.native_enforcement_count > 0",
@@ -308,7 +308,7 @@
         "python3 scripts/yao.py skill-atlas --workspace-root .",
         "python3 scripts/yao.py skill-os2-audit . --generated-at <YYYY-MM-DD>",
         "Copy evidence/world_class/templates/native-client-telemetry.intake.json to evidence/world_class/submissions/native-client-telemetry.json and fill only real evidence fields.",
-        "python3 scripts/yao.py world-class-intake ."
+        "python3 scripts/yao.py world-class-intake . --submissions-dir evidence/world_class/submissions"
       ],
       "success_checks": [
         "reports/adoption_drift_report.json summary.source_types.external > 0",
diff --git a/reports/world_class_evidence_plan.md b/reports/world_class_evidence_plan.md
index 4f7d49f..c979c34 100644
--- a/reports/world_class_evidence_plan.md
+++ b/reports/world_class_evidence_plan.md
@@ -34,7 +34,7 @@ This report is an execution plan for the remaining world-class evidence gaps. It
 - `YAO_OUTPUT_EVAL_MODEL=gpt-4.1-mini OPENAI_API_KEY=<redacted> python3 scripts/yao.py output-exec --provider-runner openai --timeout-seconds 60`
 - `python3 scripts/yao.py skill-os2-audit . --generated-at <YYYY-MM-DD>`
 - Copy evidence/world_class/templates/provider-holdout.intake.json to evidence/world_class/submissions/provider-holdout.json and fill only real evidence fields.
-- `python3 scripts/yao.py world-class-intake .`
+- `python3 scripts/yao.py world-class-intake . --submissions-dir evidence/world_class/submissions`
 
 ### Success Checks
 
@@ -72,7 +72,7 @@ This report is an execution plan for the remaining world-class evidence gaps. It
 - `python3 scripts/yao.py output-review`
 - `python3 scripts/yao.py skill-os2-audit . --generated-at <YYYY-MM-DD>`
 - Copy evidence/world_class/templates/human-adjudication.intake.json to evidence/world_class/submissions/human-adjudication.json and fill only real evidence fields.
-- `python3 scripts/yao.py world-class-intake .`
+- `python3 scripts/yao.py world-class-intake . --submissions-dir evidence/world_class/submissions`
 
 ### Success Checks
 
@@ -112,7 +112,7 @@ This report is an execution plan for the remaining world-class evidence gaps. It
 - `python3 scripts/yao.py runtime-permissions . --package-dir dist`
 - `python3 scripts/yao.py skill-os2-audit . --generated-at <YYYY-MM-DD>`
 - Copy evidence/world_class/templates/native-permission-enforcement.intake.json to evidence/world_class/submissions/native-permission-enforcement.json and fill only real evidence fields.
-- `python3 scripts/yao.py world-class-intake .`
+- `python3 scripts/yao.py world-class-intake . --submissions-dir evidence/world_class/submissions`
 
 ### Success Checks
 
@@ -152,7 +152,7 @@ This report is an execution plan for the remaining world-class evidence gaps. It
 - `python3 scripts/yao.py skill-atlas --workspace-root .`
 - `python3 scripts/yao.py skill-os2-audit . --generated-at <YYYY-MM-DD>`
 - Copy evidence/world_class/templates/native-client-telemetry.intake.json to evidence/world_class/submissions/native-client-telemetry.json and fill only real evidence fields.
-- `python3 scripts/yao.py world-class-intake .`
+- `python3 scripts/yao.py world-class-intake . --submissions-dir evidence/world_class/submissions`
 
 ### Success Checks