## Feature Request: Add Max Stamina and Recovery Speed Options to Config

Currently, the only way to change the maximum stamina is through the `/attribute` command, which doesn't persist across worlds and has to be reapplied manually. It would be helpful to add two new options to the `[Stamina]` section in the config file:

```toml
[Stamina]
# Maximum stamina value
# Range: 1 ~ 32767
max_stamina = 2000

# Stamina recovery per tick
# Range: 0.0 ~ 100.0
stamina_recovery = 1.0
```

This would allow server admins to configure stamina globally in one place, without relying on commands or datapacks.

Start by tracing the existing /attribute command and the code that reads the [Stamina] configuration section. Add configuration handling for max_stamina and stamina_recovery with the stated ranges, then verify that both values persist across worlds and control stamina behavior without requiring the command or datapacks.

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