feat: enhance user management with matricula retrieval and validation

- Updated user-related queries and mutations to retrieve the matricula from associated funcionario records, improving data accuracy.
- Refactored user creation and listing functionalities to ensure matricula is correctly handled and displayed.
- Enhanced error handling and validation for user operations, ensuring a more robust user management experience.
- Improved the overall structure of user-related code for better maintainability and clarity.

packages/backend/convex/seed.ts

@@ -316,7 +316,6 @@ export const seedDatabase = internalMutation({
 
       const senhaInicial = await hashPassword("Mudar@123");
       await ctx.db.insert("usuarios", {
-        matricula: funcionario.matricula,
         senhaHash: senhaInicial,
         nome: funcionario.nome,
         email: funcionario.email,