- Changed the type of the `span_type` parameter in the `observe` and `observe_debug` functions from `str | None` to `Literal['DEFAULT', 'LLM', 'TOOL']` for better type safety and clarity.
- Removed unnecessary conditional checks for `span_type` in the decorator implementations.
- Commented out logging statements in `_is_debug_mode` to reduce verbosity.
- Simplified the usage of `@observe_debug` and `_lmnr_observe` decorators in `BrowserSession` by consolidating arguments into a single `kwargs` dictionary for better readability and maintainability.