Fix case-insensitive Claude tool allowlist matching

src/agents/pipeline.ts

@@ -458,6 +458,38 @@ function toToolNameCandidates(toolName: string): string[] {
   return dedupeStrings(candidates);
 }
 
+function buildCaseInsensitiveToolLookup(tools: readonly string[]): Map<string, string> {
+  const lookup = new Map<string, string>();
+  for (const tool of tools) {
+    const normalized = tool.trim().toLowerCase();
+    if (!normalized || lookup.has(normalized)) {
+      continue;
+    }
+    lookup.set(normalized, tool);
+  }
+  return lookup;
+}
+
+function resolveAllowedToolMatch(input: {
+  candidates: readonly string[];
+  allowset: ReadonlySet<string>;
+  caseInsensitiveLookup: ReadonlyMap<string, string>;
+}): string | undefined {
+  const direct = input.candidates.find((candidate) => input.allowset.has(candidate));
+  if (direct) {
+    return direct;
+  }
+
+  for (const candidate of input.candidates) {
+    const match = input.caseInsensitiveLookup.get(candidate.toLowerCase());
+    if (match) {
+      return match;
+    }
+  }
+
+  return undefined;
+}
+
 function defaultEventPayloadForStatus(status: ActorResultStatus): DomainEventPayload {
   if (status === "success") {
     return {
@@ -1177,6 +1209,7 @@ export class PipelineExecutor {
 
   private createToolPermissionHandler(allowedTools: readonly string[]): ActorToolPermissionHandler {
     const allowset = new Set(allowedTools);
+    const caseInsensitiveAllowLookup = buildCaseInsensitiveToolLookup(allowedTools);
     const rulesEngine = this.securityContext?.rulesEngine;
     const toolPolicy = toAllowedToolPolicy(allowedTools);
 
@@ -1192,7 +1225,11 @@ export class PipelineExecutor {
       }
 
       const candidates = toToolNameCandidates(toolName);
-      const allowMatch = candidates.find((candidate) => allowset.has(candidate));
+      const allowMatch = resolveAllowedToolMatch({
+        candidates,
+        allowset,
+        caseInsensitiveLookup: caseInsensitiveAllowLookup,
+      });
       if (!allowMatch) {
         rulesEngine?.assertToolInvocationAllowed({
           tool: candidates[0] ?? toolName,