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>

package.json

@@ -59,6 +59,7 @@
 		"@tabler/icons-react": "^3.36.1",
 		"@tailwindcss/vite": "^4.1.18",
 		"@tanstack/react-router": "^1.158.1",
+		"bcryptjs": "^3.0.3",
 		"better-auth": "^1.4.18",
 		"class-variance-authority": "^0.7.1",
 		"cmdk": "^1.0.1",
@@ -92,6 +93,7 @@
 		"@tanstack/react-router-devtools": "^1.158.1",
 		"@tanstack/router-cli": "1.158.1",
 		"@tanstack/router-vite-plugin": "^1.158.1",
+		"@types/bcryptjs": "^3.0.0",
 		"@types/bun": "latest",
 		"@types/react": "^19",
 		"@types/react-dom": "^19",