fix: add VPC warnings to TUI dev and invoke screens

The non-interactive CLI paths had VPC warnings but the TUI screens did not.
- DevScreen: warn that local dev runs outside VPC
- InvokeScreen: warn about VPC endpoint requirements
- Thread networkMode through useInvokeFlow config

Author: tejaskash

src/cli/tui/hooks/useDevServer.ts

@@ -292,6 +292,7 @@ export function useDevServer(options: { workingDir: string; port: number; agentN
     stop,
     logFilePath: loggerRef.current?.getRelativeLogPath(),
     hasMemory: (project?.memories?.length ?? 0) > 0,
+    hasVpc: project?.agents.find(a => a.name === config?.agentName)?.networkMode === 'VPC',
     modelProvider: project?.agents.find(a => a.name === config?.agentName)?.modelProvider,
   };
 }

src/cli/tui/screens/dev/DevScreen.tsx

@@ -177,6 +177,7 @@ export function DevScreen(props: DevScreenProps) {
     stop,
     logFilePath,
     hasMemory,
+    hasVpc,
     modelProvider,
   } = useDevServer({
     workingDir,
@@ -446,6 +447,12 @@ export function DevScreen(props: DevScreenProps) {
           AgentCore memory is not available when running locally. To test memory, deploy and use invoke.
         </Text>
       )}
+      {hasVpc && (
+        <Text color="yellow">
+          This agent uses VPC network mode. Local dev server runs outside your VPC. Network behavior may differ from
+          deployed environment.
+        </Text>
+      )}
     </Box>
   );
 

src/cli/tui/screens/invoke/InvokeScreen.tsx

@@ -337,6 +337,11 @@ export function InvokeScreen({
         </Text>
       )}
       {traceUrl && <Text dimColor>Note: Traces may take 2-3 minutes to appear in CloudWatch</Text>}
+      {mode !== 'select-agent' && agent?.networkMode === 'VPC' && (
+        <Text color="yellow">
+          This agent uses VPC network mode. Ensure your VPC endpoints are configured for invocation.
+        </Text>
+      )}
     </Box>
   );
 

src/cli/tui/screens/invoke/useInvokeFlow.ts

@@ -3,6 +3,7 @@ import type {
   AgentCoreDeployedState,
   AwsDeploymentTarget,
   ModelProvider,
+  NetworkMode,
   AgentCoreProjectSpec as _AgentCoreProjectSpec,
 } from '../../../../schema';
 import { DEFAULT_RUNTIME_USER_ID, invokeAgentRuntimeStreaming } from '../../../aws';
@@ -12,7 +13,7 @@ import { generateSessionId } from '../../../operations/session';
 import { useCallback, useEffect, useRef, useState } from 'react';
 
 export interface InvokeConfig {
-  agents: { name: string; state: AgentCoreDeployedState; modelProvider?: ModelProvider }[];
+  agents: { name: string; state: AgentCoreDeployedState; modelProvider?: ModelProvider; networkMode?: NetworkMode }[];
   target: AwsDeploymentTarget;
   targetName: string;
   projectName: string;
@@ -82,7 +83,12 @@ export function useInvokeFlow(options: InvokeFlowOptions = {}): InvokeFlowState
         for (const agent of project.agents) {
           const state = targetState?.resources?.agents?.[agent.name];
           if (state) {
-            agents.push({ name: agent.name, state, modelProvider: agent.modelProvider });
+            agents.push({
+              name: agent.name,
+              state,
+              modelProvider: agent.modelProvider,
+              networkMode: agent.networkMode,
+            });
           }
         }