fix: default notification emails to current user and add validation

- Pre-populate notification_emails field with current user's email
- Add email validation to reject invalid email formats
- Update tooltip text

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: tahierhussain

frontend/src/ide/scheduler/JobDeploy.jsx

@@ -37,6 +37,7 @@ import {
 import { checkPermission } from "../../common/helpers";
 import { useNotificationService } from "../../service/notification-service";
 import { useProjectStore } from "../../store/project-store";
+import { useSessionStore } from "../../store/session-store";
 import { useJobService } from "./service";
 import { CronFields } from "./CronFields";
 import { IntervalFields } from "./IntervalFields";
@@ -98,6 +99,8 @@ const JobDeploy = memo(function JobDeploy({
   const canWrite = checkPermission("JOB_DEPLOYMENT", "can_write");
   const { notify } = useNotificationService();
   const { projectId } = useProjectStore();
+  const { sessionDetails } = useSessionStore();
+  const userEmail = sessionDetails?.email || "";
   const {
     createTask,
     updateTask,
@@ -410,7 +413,7 @@ const JobDeploy = memo(function JobDeploy({
             max_retries: 0,
             notify_on_failure: false,
             notify_on_success: false,
-            notification_emails: [],
+            notification_emails: userEmail ? [userEmail] : [],
             trigger_on_complete: null,
           }}
         >
@@ -669,7 +672,27 @@ const JobDeploy = memo(function JobDeploy({
                       <Form.Item
                         label="Notification Emails"
                         name="notification_emails"
-                        tooltip="Comma-separated email addresses"
+                        tooltip="Enter email addresses"
+                        rules={[
+                          {
+                            validator: (_, value) => {
+                              if (!value || value.length === 0)
+                                return Promise.resolve();
+                              const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
+                              const invalid = value.filter(
+                                (e) => !emailRegex.test(e)
+                              );
+                              if (invalid.length > 0) {
+                                return Promise.reject(
+                                  new Error(
+                                    `Invalid email(s): ${invalid.join(", ")}`
+                                  )
+                                );
+                              }
+                              return Promise.resolve();
+                            },
+                          },
+                        ]}
                       >
                         <Select
                           mode="tags"