feat: add OAuth credential type to add identity TUI wizard

src/cli/commands/add/command.tsx

@@ -265,7 +265,7 @@ export function registerAdd(program: Command) {
   // Subcommand: add gateway
   addCmd
     .command('gateway')
-    .description('Add an MCP gateway to the project')
+    .description('Add a gateway to the project')
     .option('--name <name>', 'Gateway name')
     .option('--description <desc>', 'Gateway description')
     .option('--authorizer-type <type>', 'Authorizer type: NONE or CUSTOM_JWT', 'NONE')

src/cli/operations/identity/create-identity.ts

@@ -108,6 +108,19 @@ export async function getAllCredentialNames(): Promise<string[]> {
   }
 }
 
+/**
+ * Get list of existing credentials with full type information from the project.
+ */
+export async function getAllCredentials(): Promise<Credential[]> {
+  try {
+    const configIO = new ConfigIO();
+    const project = await configIO.readProjectSpec();
+    return project.credentials;
+  } catch {
+    return [];
+  }
+}
+
 /**
  * Create a credential resource and add it to the project.
  * Writes the credential config to agentcore.json and secrets to .env.local.

src/cli/tui/components/CredentialSourcePrompt.tsx

@@ -137,17 +137,18 @@ export function CredentialSourcePrompt({
         <Box flexDirection="column" gap={1}>
           <Text bold>Identity Provider Setup</Text>
           <Text dimColor>
-            {missingCredentials.length} identity provider{missingCredentials.length > 1 ? 's' : ''} configured:
+            {new Set(missingCredentials.map(c => c.providerName)).size} identity provider
+            {new Set(missingCredentials.map(c => c.providerName)).size > 1 ? 's' : ''} configured:
           </Text>
           <Box flexDirection="column" marginLeft={2}>
-            {missingCredentials.map(cred => (
-              <Text key={cred.envVarName} dimColor>
-                • {cred.providerName}
+            {[...new Set(missingCredentials.map(c => c.providerName))].map(name => (
+              <Text key={name} dimColor>
+                • {name}
               </Text>
             ))}
           </Box>
           <Box marginTop={1}>
-            <Text dimColor>How would you like to provide the API keys?</Text>
+            <Text dimColor>How would you like to provide the credentials?</Text>
           </Box>
           <Box marginTop={1}>
             <SelectList items={SOURCE_OPTIONS} selectedIndex={selectedIndex} />