fix(mcp): preserve headless namespace in install payload

Pass the isolated runtime namespace to spawned headless clients so the bootstrap process binds the socket that post-spawn discovery polls.

Author: VaiYav

apps/daemon/src/mcp-routes.ts

@@ -70,6 +70,10 @@ export function registerMcpRoutes(app: Express, ctx: RegisterMcpRoutesDeps) {
     if (mcpBootstrapIpcPath != null && mcpBootstrapIpcPath.length > 0) {
       sidecarEnv.OD_MCP_BOOTSTRAP_IPC_PATH = mcpBootstrapIpcPath;
     }
+    const packagedRuntimeNamespace = process.env.OD_PACKAGED_RUNTIME_NAMESPACE;
+    if (packagedRuntimeNamespace != null && packagedRuntimeNamespace.length > 0) {
+      sidecarEnv.OD_PACKAGED_RUNTIME_NAMESPACE = packagedRuntimeNamespace;
+    }
     // tools-dev / packaged launchers export OD_WEB_PORT so the daemon
     // knows where the browser-facing OpenDesign studio is running.
     // CLI-only / headless launches set neither and webBaseUrl falls

apps/daemon/tests/mcp-install-info.test.ts

@@ -88,6 +88,7 @@ function makeInstallInfoApp({ cliPath, port, env = {}, dataDir }: InstallInfoOpt
       'OD_MCP_BOOTSTRAP_COMMAND',
       'OD_MCP_BOOTSTRAP_ARGS',
       'OD_MCP_BOOTSTRAP_IPC_PATH',
+      'OD_PACKAGED_RUNTIME_NAMESPACE',
     ] as const) {
       const value = env[key];
       if (value != null && value.length > 0) sidecarEnv[key] = value;
@@ -327,6 +328,7 @@ describe('GET /api/mcp/install-info', () => {
         OD_MCP_BOOTSTRAP_ARGS: bootstrapArgs,
         OD_MCP_BOOTSTRAP_IPC_PATH:
           '/tmp/open-design/ipc/release-stable-headless/daemon.sock',
+        OD_PACKAGED_RUNTIME_NAMESPACE: 'release-stable-headless',
       },
       dataDir,
     );
@@ -343,6 +345,7 @@ describe('GET /api/mcp/install-info', () => {
         OD_MCP_BOOTSTRAP_ARGS: bootstrapArgs,
         OD_MCP_BOOTSTRAP_IPC_PATH:
           '/tmp/open-design/ipc/release-stable-headless/daemon.sock',
+        OD_PACKAGED_RUNTIME_NAMESPACE: 'release-stable-headless',
       });
     } finally {
       await new Promise<void>((done) => server?.close(() => done()));