Add DeepSeek TUI to ACP catalog

packages/server/src/server/agent/providers/acp-agent.test.ts

@@ -362,6 +362,33 @@ describe("createLoggedNdJsonStream", () => {
     consoleError.mockRestore();
   });
 
+  test("normalizes stringified numeric ACP response ids", async () => {
+    const input = new TransformStream<Uint8Array, Uint8Array>();
+    const output = new TransformStream<Uint8Array, Uint8Array>();
+    const logger = {
+      warn: vi.fn(),
+    };
+
+    const stream = createLoggedNdJsonStream(output.writable, input.readable, {
+      logger: asInternals<ReturnType<typeof createTestLogger>>(logger),
+      provider: "deepseek-tui",
+    });
+    const reader = stream.readable.getReader();
+    const writer = input.writable.getWriter();
+
+    await writer.write(
+      new TextEncoder().encode('{"jsonrpc":"2.0","id":"0","result":{"ok":true}}\n'),
+    );
+
+    const parsed = await reader.read();
+
+    expect(parsed.value).toEqual({ jsonrpc: "2.0", id: 0, result: { ok: true } });
+    expect(logger.warn).not.toHaveBeenCalled();
+
+    await writer.close();
+    reader.releaseLock();
+  });
+
   test("does not log terminal control sequences from malformed ACP stdout", async () => {
     const input = new TransformStream<Uint8Array, Uint8Array>();
     const output = new TransformStream<Uint8Array, Uint8Array>();

packages/server/src/server/agent/providers/acp-agent.ts

@@ -180,6 +180,26 @@ function summarizeMalformedACPStdoutError(error: unknown): { type: string; messa
   };
 }
 
+function normalizeACPIncomingMessage(message: AnyMessage): AnyMessage {
+  if (
+    "id" in message &&
+    !("method" in message) &&
+    typeof message.id === "string" &&
+    /^\d+$/.test(message.id)
+  ) {
+    const numericId = Number(message.id);
+    if (Number.isSafeInteger(numericId)) {
+      return {
+        ...message,
+        // COMPAT(deepseek-tui-acp-id): added v0.1.78, remove after 2026-11-19
+        // once the ACP SDK accepts stringified numeric response IDs.
+        id: numericId,
+      } as AnyMessage;
+    }
+  }
+  return message;
+}
+
 export function createLoggedNdJsonStream(
   output: NodeWritableStream,
   input: NodeReadableStream,
@@ -214,7 +234,7 @@ export function createLoggedNdJsonStream(
 
             try {
               const message: AnyMessage = JSON.parse(trimmedLine);
-              controller.enqueue(message);
+              controller.enqueue(normalizeACPIncomingMessage(message));
             } catch (error) {
               options.logger.warn(
                 {