fix: revert actor correlation changes for session identification

[naji247]

Summary

This PR reverts the actor correlation changes that were implemented for session identification. The changes were causing complexity and potential issues with session management.

Changes

• Removes actor correlation logic from session identification
• Simplifies session management back to the original implementation
• Removes related test files (identify.test.ts and session-id.test.ts)
• Cleans up internal module dependencies

Motivation

The actor correlation approach added significant complexity without providing sufficient value for the current use case. Reverting to the simpler session management approach improves maintainability and reduces potential edge cases.

Impact

• Breaking Change: No
• Files Changed: 5 files
• Lines Removed: ~1048 lines (mostly test code)
• Lines Added: ~9 lines

Testing

The simplified session management has been tested and maintains backward compatibility with existing implementations.