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

src/cli/components/SubagentGroupDisplay.tsx

@@ -88,13 +88,14 @@ const AgentRow = memo(({ agent, isLast, expanded }: 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>
         {getDotElement()}
         <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 */}

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 */}

src/cli/components/colors.ts

@@ -120,7 +120,6 @@ export const colors = {
     completed: brandColors.statusSuccess,
     error: brandColors.statusError,
     treeChar: brandColors.textDisabled,
-    stats: brandColors.textSecondary,
     hint: brandColors.textDisabled,
   },
 

src/cli/helpers/subagentAggregation.ts

@@ -108,6 +108,7 @@ export function createSubagentGroupItem(
         totalTokens: subagent.totalTokens,
         agentURL: subagent.agentURL,
         error: subagent.error,
+        model: subagent.model,
       });
     }
   }

src/cli/helpers/subagentState.ts

@@ -26,6 +26,7 @@ export interface SubagentState {
   totalTokens: number;
   durationMs: number;
   error?: string;
+  model?: string;
   startTime: number;
   toolCallId?: string; // Links this subagent to its parent Task tool call
 }