feat: support disabling bundled mcp servers

tests/lib/mcp-config.test.js

@@ -0,0 +1,62 @@
+'use strict';
+
+const assert = require('assert');
+
+const { filterMcpConfig, parseDisabledMcpServers } = require('../../scripts/lib/mcp-config');
+
+function test(name, fn) {
+  try {
+    fn();
+    console.log(`  \u2713 ${name}`);
+    return true;
+  } catch (error) {
+    console.log(`  \u2717 ${name}`);
+    console.log(`    Error: ${error.message}`);
+    return false;
+  }
+}
+
+function runTests() {
+  console.log('\n=== Testing mcp-config.js ===\n');
+
+  let passed = 0;
+  let failed = 0;
+
+  if (test('parseDisabledMcpServers dedupes and trims values', () => {
+    assert.deepStrictEqual(
+      parseDisabledMcpServers(' github,exa ,github,,playwright '),
+      ['github', 'exa', 'playwright']
+    );
+  })) passed++; else failed++;
+
+  if (test('filterMcpConfig removes disabled servers and preserves others', () => {
+    const result = filterMcpConfig({
+      mcpServers: {
+        github: { command: 'npx' },
+        exa: { url: 'https://mcp.exa.ai/mcp' },
+        memory: { command: 'npx' },
+      },
+      _comments: { usage: 'demo' },
+    }, ['github', 'memory']);
+
+    assert.deepStrictEqual(result.removed, ['github', 'memory']);
+    assert.deepStrictEqual(Object.keys(result.config.mcpServers), ['exa']);
+    assert.deepStrictEqual(result.config._comments, { usage: 'demo' });
+  })) passed++; else failed++;
+
+  if (test('filterMcpConfig leaves config unchanged when no disabled servers are provided', () => {
+    const result = filterMcpConfig({
+      mcpServers: {
+        github: { command: 'npx' },
+      },
+    }, []);
+
+    assert.deepStrictEqual(result.removed, []);
+    assert.deepStrictEqual(Object.keys(result.config.mcpServers), ['github']);
+  })) passed++; else failed++;
+
+  console.log(`\nResults: Passed: ${passed}, Failed: ${failed}`);
+  process.exit(failed > 0 ? 1 : 0);
+}
+
+runTests();