⚡ Bolt: Optimize JSON history scanning with os.scandir

[Jandir]

💡 What:
Replaced Path.glob("*.json") in _scan_directory_for_history with a single os.scandir pass. The files are now dynamically grouped into master_jsons and info_jsons using string matching on the cached DirEntry.name, eliminating the need to iterate through the entire directory's JSON results twice.

🎯 Why:
Previously, the code generated a full list of Path objects via glob and iterated over it twice, repeatedly doing .name string checks for every file in both loops. As the historical JSON backup folder grows (potentially hundreds or thousands of JSON files), this repetitive traversal and Path object instantiation degrades load times unnecessarily.

📊 Impact:

• Reduces file list traversals from 2 passes to 1.
• Avoids instantiating numerous Path objects unnecessarily.
• Reduces repetitive .name string extractions and string condition checking overhead.

🔬 Measurement:
Run the test suite using export PYTHONPATH=$PWD && source .venv/bin/activate && pytest tests/ --ignore=tests/test_escriba.py and observe test_history.py continuing to pass 100%, indicating all historical aggregation operates correctly with the underlying scanning optimization.

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PR created automatically by Jules for task 15574138100101399888 started by @Jandir

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