error-handler-advisor

Resultado esperado:

This function will panic if the user is not found. Consider using Result to make errors recoverable:

```rust
fn get_user(id: &str) -> Result<User, DatabaseError> {
let user = db.find_user(id)?;
Ok(user)
}
```

The ? operator propagates the error to the caller, allowing them to decide how to handle it.

Resultado esperado:

For library code, use thiserror with specific error types:

```rust
use thiserror::Error;

#[derive(Error, Debug)]
pub enum MyLibError {
#[error("Invalid input: {0}")]
InvalidInput(String),

#[error(transparent)]
Io(#[from] std::io::Error),
}
```

This provides type-safe errors with automatic Display implementations and From trait implementations.