chore: Use primary agent's model as fallback for subagents (#304)

src/cli/components/SubagentGroupStatic.tsx

@@ -31,6 +31,7 @@ export interface StaticSubagent {
   totalTokens: number;
   agentURL: string | null;
   error?: string;
+  model?: string;
 }
 
 interface SubagentGroupStaticProps {
@@ -58,13 +59,14 @@ const AgentRow = memo(({ agent, isLast }: AgentRowProps) => {
 
   return (
     <Box flexDirection="column">
-      {/* Main row: tree char + description + type + stats */}
+      {/* Main row: tree char + description + type + model + stats */}
       <Box flexDirection="row">
         <Text color={colors.subagent.treeChar}>{treeChar} </Text>
         <Text color={dotColor}>●</Text>
         <Text> {agent.description}</Text>
         <Text dimColor> · {agent.type.toLowerCase()}</Text>
-        <Text color={colors.subagent.stats}> · {stats}</Text>
+        {agent.model && <Text dimColor> · {agent.model}</Text>}
+        <Text dimColor> · {stats}</Text>
       </Box>
 
       {/* Subagent URL */}