fix(cli): harden no-daemon teardown

cli.ts

@@ -79,10 +79,10 @@ async function runInProcess(
     const result = await runCommand(cmdArg, client, uri, params);
     process.stdout.write(JSON.stringify(result, null, 2) + "\n");
   } finally {
-    // Fire-And-Forget Shutdown - With `gopls -remote=auto` (and similar)
+    // Hard Teardown - The no-daemon path is short-lived/debug-only. Avoid
-    // the spawned process is a thin client to a background daemon; a
+    // graceful JSON-RPC shutdown because the server stdio stream may already
-    // graceful shutdown can hang the parent. Kick it off but don't wait.
+    // be closed, which can surface ERR_STREAM_DESTROYED during process exit.
-    void client.dispose();
+    void client.dispose({ graceful: false });
   }
 }
 

src/client.ts

@@ -252,15 +252,22 @@ export class LspClient {
   }
 
   // Dispose - Best-effort shutdown; kills the process if it doesn't exit.
-  async dispose(): Promise<void> {
+  async dispose(options: { graceful?: boolean } = {}): Promise<void> {
+    const graceful = options.graceful ?? true;
     if (this.conn) {
+      if (graceful) {
         try {
           await this.conn.sendRequest("shutdown", undefined);
           this.conn.sendNotification("exit");
         } catch {
           // Ignore - we're tearing down anyway.
         }
+      }
+      try {
         this.conn.dispose();
+      } catch {
+        // Ignore - connection may already be closed.
+      }
     }
     if (this.proc && !this.proc.killed) {
       this.proc.kill();