[auth] Add metadata suite for running metadata discovery tests

Adds a new 'metadata' suite that runs just the auth/metadata-* scenarios
for faster iteration when testing metadata discovery specifically.

Usage: node dist/index.mjs client --suite metadata --command "..."

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: pcarleton

src/index.ts

@@ -14,7 +14,8 @@ import {
   listScenarios,
   listClientScenarios,
   listActiveClientScenarios,
-  listAuthScenarios
+  listAuthScenarios,
+  listMetadataScenarios
 } from './scenarios';
 import { ConformanceCheck } from './types';
 import { ClientOptionsSchema, ServerOptionsSchema } from './schemas';
@@ -51,7 +52,8 @@ program
         }
 
         const suites: Record<string, () => string[]> = {
-          auth: listAuthScenarios
+          auth: listAuthScenarios,
+          metadata: listMetadataScenarios
         };
 
         const suiteName = options.suite.toLowerCase();
@@ -147,7 +149,7 @@ program
         console.error('Either --scenario or --suite is required');
         console.error('\nAvailable client scenarios:');
         listScenarios().forEach((s) => console.error(`  - ${s}`));
-        console.error('\nAvailable suites: auth');
+        console.error('\nAvailable suites: auth, metadata');
         process.exit(1);
       }
 

src/scenarios/client/auth/discovery-metadata.ts

@@ -217,3 +217,8 @@ export const AuthMetadataVar3Scenario = createMetadataScenario(
 
 // Export all scenarios as an array for convenience
 export const metadataScenarios = SCENARIO_CONFIGS.map(createMetadataScenario);
+
+// Export function to list metadata scenario names (for suite support)
+export function listMetadataScenarios(): string[] {
+  return metadataScenarios.map((s) => s.name);
+}

src/scenarios/index.ts

@@ -46,6 +46,7 @@ import {
 } from './server/prompts.js';
 
 import { authScenariosList } from './client/auth/index.js';
+import { listMetadataScenarios } from './client/auth/discovery-metadata.js';
 
 // Pending client scenarios (not yet fully tested/implemented)
 const pendingClientScenariosList: ClientScenario[] = [
@@ -151,3 +152,5 @@ export function listActiveClientScenarios(): string[] {
 export function listAuthScenarios(): string[] {
   return authScenariosList.map((scenario) => scenario.name);
 }
+
+export { listMetadataScenarios };