feat: Add HeadyLens module and optimize drift check

[HeadyConnection]

This PR addresses "to do" tasks identified in the repository:

1. Add HeadyLens Module (Issue Add HeadyLens module for system transparency #36): Implemented the core logic for capturing and reporting system explanations in HeadySystems_v13/apps/heady_lens/core.py and added a demonstration script demo.py.
2. Optimize Check Drift Script (Issue ⚡ Optimize check_drift.py: Use any() and tuple prefix matching #38): Refactored HeadySystems_v13/scripts/docs/check_drift.py to use startswith with a tuple for better performance and readability.

Verification:

• Ran demo.py to verify HeadyLens captures and reports events.
• Validated check_drift.py logic with self-comparison.
• Verified AtomicWriter works for current directory.

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PR created automatically by Jules for task 3908367549372020071 started by @HeadyConnection

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