Implement log_undo_action() Function

[BDVRTribe]

Summary

Build the log_undo_action() function to track reversible operations, such as deletions or edits, so they can be undone later.

Tasks

• Create log_undo_action() in logger.py
• Include fields: previous state, timestamp, target file
• Store logs under /logs/{date}/undo.json
• Connect this function to delete_snippet and future destructive commands
• Write test case for undo log creation

Outcome

Provides a foundation for a future undo system by logging original states of modified/deleted content.