feat: implement user management features including creation, updating, and deletion of users

- Added user management routes and logic in `+page.server.ts` for creating, updating, resetting passwords, and deleting users.
- Created a user management interface in `+page.svelte` with dialogs for user actions.
- Integrated password validation and hashing using `@node-rs/argon2`.
- Updated database schema to include a `user` table with necessary fields.
- Seeded a default admin user during database migration if no users exist.
- Added necessary dependencies in `package.json`.

.claude/settings.local.json

@@ -7,7 +7,12 @@
       "Bash(go run:*)",
       "Bash(go build:*)",
       "Bash(go doc:*)",
-      "Bash(go test:*)"
+      "Bash(go test:*)",
+      "WebFetch(domain:lucia-auth.com)",
+      "WebFetch(domain:v3.lucia-auth.com)",
+      "Bash(bun install:*)",
+      "Bash(bunx svelte-kit sync:*)",
+      "Bash(bun run check:*)"
     ]
   }
 }