feat: improve header responsiveness and update seed initialization

- Add text truncation for title on mobile screens
- Hide user info section on mobile, show simplified icons only
- Update seed.ts to create admin and demo users with proper password hashing
- Add bcryptjs for password hashing in seed script
- Update QWEN.md documentation with seed command and default users

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

src/components/dashboard-card.tsx

@@ -1,6 +1,6 @@
-import type { ReactNode } from "react";
 // Import Mantine components directly
-import { Group, Text, ThemeIcon, Badge } from "@mantine/core";
+import { Badge, Group, Text, ThemeIcon } from "@mantine/core";
+import type { ReactNode } from "react";
 // Import custom Card and its sub-components
 import { Card } from "./ui/card";