fix: imessage dm replies and error details (#935)

src/imessage/client.ts

@@ -180,7 +180,17 @@ export class IMessageRpcClient {
       this.pending.delete(key);
 
       if (parsed.error) {
-        const msg = parsed.error.message ?? "imsg rpc error";
+        const baseMessage = parsed.error.message ?? "imsg rpc error";
+        const details = parsed.error.data;
+        const code = parsed.error.code;
+        const suffixes = [] as string[];
+        if (typeof code === "number") suffixes.push(`code=${code}`);
+        if (details !== undefined) {
+          const detailText =
+            typeof details === "string" ? details : JSON.stringify(details, null, 2);
+          if (detailText) suffixes.push(detailText);
+        }
+        const msg = suffixes.length > 0 ? `${baseMessage}: ${suffixes.join(" ")}` : baseMessage;
         pending.reject(new Error(msg));
         return;
       }

src/imessage/monitor.updates-last-route-chat-id-direct-messages.test.ts

@@ -92,7 +92,7 @@ beforeEach(() => {
 });
 
 describe("monitorIMessageProvider", () => {
-  it("updates last route with chat_id for direct messages", async () => {
+  it("updates last route with sender handle for direct messages", async () => {
     replyMock.mockResolvedValueOnce({ text: "ok" });
     const run = monitorIMessageProvider();
     await waitForSubscribe();
@@ -118,7 +118,7 @@ describe("monitorIMessageProvider", () => {
     expect(updateLastRouteMock).toHaveBeenCalledWith(
       expect.objectContaining({
         channel: "imessage",
-        to: "chat_id:7",
+        to: "+15550004444",
       }),
     );
   });

src/imessage/monitor/monitor-provider.ts

@@ -296,7 +296,7 @@ export async function monitorIMessageProvider(opts: MonitorIMessageOpts = {}): P
       });
     }
 
-    const imessageTo = chatTarget || `imessage:${sender}`;
+    const imessageTo = (isGroup ? chatTarget : undefined) || `imessage:${sender}`;
     const ctxPayload = {
       Body: combinedBody,
       RawBody: bodyText,
@@ -329,7 +329,7 @@ export async function monitorIMessageProvider(opts: MonitorIMessageOpts = {}): P
       const storePath = resolveStorePath(sessionCfg?.store, {
         agentId: route.agentId,
       });
-      const to = chatTarget || sender;
+      const to = (isGroup ? chatTarget : undefined) || sender;
       if (to) {
         await updateLastRoute({
           storePath,