ShellSage doesn't work with gpt-5.2-codex

Error:

```
litellm.exceptions.BadRequestError: litellm.BadRequestError: OpenAIException - {
"error": {
"message": "Unsupported parameter: 'temperature' is not supported with this model.",
"type": "invalid_request_error",
"param": "temperature",
"code": null
}
}
```

# .config/shell_sage/shell_sage.conf

```
[DEFAULT]
# model = claude-sonnet-4-5-20250929
model = gpt-5.2-codex
search =
think =
trust =
mode = default
api_base =
api_key =
history_lines = -1
code_theme = monokai
code_lexer = python
log = False
safecmd = False
```