fix: ensure CLI exits after command completion (#12906)

* fix: ensure CLI exits after command completion

The CLI process would hang indefinitely after commands like
`openclaw gateway restart` completed successfully.  Two root causes:

1. `runCli()` returned without calling `process.exit()` after
   `program.parseAsync()` resolved, and Commander.js does not
   force-exit the process.

2. `daemon-cli/register.ts` eagerly called `createDefaultDeps()`
   which imported all messaging-provider modules, creating persistent
   event-loop handles that prevented natural Node exit.

Changes:
- Add `flushAndExit()` helper that drains stdout/stderr before calling
  `process.exit()`, preventing truncated piped output in CI/scripts.
- Call `flushAndExit()` after both `tryRouteCli()` and
  `program.parseAsync()` resolve.
- Remove unnecessary `void createDefaultDeps()` from daemon-cli
  registration — daemon lifecycle commands never use messaging deps.
- Make `serveAcpGateway()` return a promise that resolves on
  intentional shutdown (SIGINT/SIGTERM), so `openclaw acp` blocks
  `parseAsync` for the bridge lifetime and exits cleanly on signal.
- Handle the returned promise in the standalone main-module entry
  point to avoid unhandled rejections.

Fixes #12904

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: refactor CLI lifecycle and lazy outbound deps (#12906) (thanks @DrCrinkle)

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
Co-authored-by: Peter Steinberger <steipete@gmail.com>

src/cli/deps.ts

@@ -1,10 +1,10 @@
+import type { sendMessageWhatsApp } from "../channels/web/index.js";
+import type { sendMessageDiscord } from "../discord/send.js";
+import type { sendMessageIMessage } from "../imessage/send.js";
 import type { OutboundSendDeps } from "../infra/outbound/deliver.js";
-import { logWebSelfId, sendMessageWhatsApp } from "../channels/web/index.js";
-import { sendMessageDiscord } from "../discord/send.js";
-import { sendMessageIMessage } from "../imessage/send.js";
-import { sendMessageSignal } from "../signal/send.js";
-import { sendMessageSlack } from "../slack/send.js";
-import { sendMessageTelegram } from "../telegram/send.js";
+import type { sendMessageSignal } from "../signal/send.js";
+import type { sendMessageSlack } from "../slack/send.js";
+import type { sendMessageTelegram } from "../telegram/send.js";
 
 export type CliDeps = {
   sendMessageWhatsApp: typeof sendMessageWhatsApp;
@@ -17,12 +17,30 @@ export type CliDeps = {
 
 export function createDefaultDeps(): CliDeps {
   return {
-    sendMessageWhatsApp,
-    sendMessageTelegram,
-    sendMessageDiscord,
-    sendMessageSlack,
-    sendMessageSignal,
-    sendMessageIMessage,
+    sendMessageWhatsApp: async (...args) => {
+      const { sendMessageWhatsApp } = await import("../channels/web/index.js");
+      return await sendMessageWhatsApp(...args);
+    },
+    sendMessageTelegram: async (...args) => {
+      const { sendMessageTelegram } = await import("../telegram/send.js");
+      return await sendMessageTelegram(...args);
+    },
+    sendMessageDiscord: async (...args) => {
+      const { sendMessageDiscord } = await import("../discord/send.js");
+      return await sendMessageDiscord(...args);
+    },
+    sendMessageSlack: async (...args) => {
+      const { sendMessageSlack } = await import("../slack/send.js");
+      return await sendMessageSlack(...args);
+    },
+    sendMessageSignal: async (...args) => {
+      const { sendMessageSignal } = await import("../signal/send.js");
+      return await sendMessageSignal(...args);
+    },
+    sendMessageIMessage: async (...args) => {
+      const { sendMessageIMessage } = await import("../imessage/send.js");
+      return await sendMessageIMessage(...args);
+    },
   };
 }
 
@@ -38,4 +56,4 @@ export function createOutboundSendDeps(deps: CliDeps): OutboundSendDeps {
   };
 }
 
-export { logWebSelfId };
+export { logWebSelfId } from "../web/auth-store.js";