feat(trigger): add wake_branch() to error dispatch for autonomous handling

After delivering error notification email, now calls wake_branch() to spawn
an agent in the target branch immediately. Changes reply_to from @trigger
to @devpulse so resolution reports go to devpulse. 370 tests passing.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/aipass/trigger/apps/handlers/events/error_detected.py

@@ -516,10 +516,17 @@ def handle_error_detected(
             subject=email_subject,
             message=notification_message,
             auto_execute=True,
-            reply_to='@trigger',
+            reply_to='@devpulse',
             from_branch='@trigger'
         )
 
+        # Wake the target branch so the email is processed immediately
+        try:
+            from aipass.ai_mail.apps.handlers.dispatch.wake import wake_branch
+            wake_branch(recipient, fresh=False, sender='@trigger')
+        except Exception:
+            pass  # Silent — email in inbox as fallback
+
         json_handler.log_operation("dispatch_sent", {"recipient": recipient})
 
         # Record dispatch for tracking