diff --git a/packages/runtime-playground/src/query-recorder.ts b/packages/runtime-playground/src/query-recorder.ts
index aac1510e..03286d03 100644
--- a/packages/runtime-playground/src/query-recorder.ts
+++ b/packages/runtime-playground/src/query-recorder.ts
@@ -77,7 +77,7 @@ export function wordpressQueryRecorderPhp(): string {
     }
 
     function wp_codebox_query_recorder_operation( $fingerprint ) {
-        $operation = strtolower( strtok( trim( (string) $fingerprint ), " \t\n\r\0\x0B" ) ?: '' );
+        $operation = strtolower( strtok( trim( (string) $fingerprint ), " \\t\\n\\r\\0\\x0B" ) ?: '' );
         return in_array( $operation, array( 'select', 'insert', 'update', 'delete', 'replace', 'create', 'alter', 'drop', 'truncate' ), true ) ? $operation : 'other';
     }
 
diff --git a/scripts/smoke-discovery.ts b/scripts/smoke-discovery.ts
index 5da09bde..6d55f7d1 100644
--- a/scripts/smoke-discovery.ts
+++ b/scripts/smoke-discovery.ts
@@ -37,9 +37,6 @@ export const DISCOVERY_EXCLUSIONS: readonly Exclusion[] = [
   { file: "tests/browser-blueprint-ref-permission.test.ts", reason: "failing and unmaintained; pending triage" },
   { file: "tests/command-diagnostics.test.ts", reason: "failing and unmaintained; pending triage" },
   { file: "tests/docs-boundary-language.test.ts", reason: "failing and unmaintained; pending triage" },
-  { file: "tests/performance-observation-contracts.test.ts", reason: "blocked on raw NUL in generated PHP; pending triage" },
-  { file: "tests/rest-request-query-params.test.ts", reason: "blocked on raw NUL in generated PHP; pending triage" },
-  { file: "tests/wordpress-crud-contracts.test.ts", reason: "blocked on raw NUL in generated PHP; pending triage" },
   { file: "tests/temp-runtime-cleanup.test.ts", reason: "failing and unmaintained; pending triage" },
   { file: "tests/wordpress-runtime-discovery-coverage-plan.test.ts", reason: "failing and unmaintained; pending triage" },
   { file: "scripts/agent-runtime-task-ability-smoke.ts", reason: "failing and unmaintained; pending triage" },