feat(auth): enhance authentication system with multi-user support and admin role management

- Implemented multi-user authentication with role-based access control.
- Added environment variables for initial admin user setup.
- Updated README and example environment file with new authentication options.
- Introduced user and system configuration models in the database schema.
- Enhanced authentication middleware to support user registration and role management.
- Updated frontend to handle new authentication flows, including admin user creation and role updates.

e2e/tests/drag-and-drop.spec.ts

@@ -52,6 +52,8 @@ test.describe("Drag and Drop - Collections", () => {
 
     await page.goto("/");
     await page.waitForLoadState("networkidle");
+    await page.getByPlaceholder("Search drawings...").fill(drawing.name);
+    await page.waitForTimeout(500);
 
     // Find the drawing card
     const card = page.locator(`#drawing-card-${drawing.id}`);