Refactor: logger statements to use loguru placeholders "{}"

In the whole codebase there is a variety of formatting styles in the log messages, unify that to use loguru preferred way "{}" placeholders.

example:
```python
logger.debug(f"Extracted rerun message: {key}")
```
to:
```python
logger.debug("Extracted rerun message: {}", key)
```

referrence: https://loguru.readthedocs.io/en/stable/api/logger.html#loguru._logger.Logger.log