refactor(tool-config): use getAgentListDisplayName for consistent naming

Update tool config handler to use getAgentListDisplayName

for proper agent name resolution in tool configurations.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/plugin-handlers/tool-config-handler.ts

@@ -1,5 +1,5 @@
 import type { OhMyOpenCodeConfig } from "../config";
-import { getAgentDisplayName } from "../shared/agent-display-names";
+import { getAgentDisplayName, getAgentListDisplayName } from "../shared/agent-display-names";
 import { isTaskSystemEnabled } from "../shared";
 
 type AgentWithPermission = { permission?: Record<string, unknown> };
@@ -16,7 +16,7 @@ function getConfigQuestionPermission(): string | null {
 }
 
 function agentByKey(agentResult: Record<string, unknown>, key: string): AgentWithPermission | undefined {
-  return (agentResult[getAgentDisplayName(key)] ?? agentResult[key]) as
+  return (agentResult[getAgentListDisplayName(key)] ?? agentResult[getAgentDisplayName(key)] ?? agentResult[key]) as
     | AgentWithPermission
     | undefined;
 }