fix: handle new organization structure in user data

[KarrixLee]

Here's a concise PR description:

Fix: Add backward compatibility for Clerk's updated user data structure

Problem:
Clerk recently updated their user data structure, replacing the direct org_id field with an o object containing organization data. This broke organization-based functionality across the application.

Solution:
Added backward compatibility in the auth middleware to extract org_id from the new o.id structure when the legacy org_id field is not present.

Changes:

• Updated get_current_user() in auth.py to handle both old and new Clerk token formats
• Maintains full backward compatibility - no other code changes required
• Removed debug print statement

Testing:

• ✅ Works with existing users who have organizations
• ✅ Works with users without organizations
• ✅ Maintains compatibility with API tokens

References:
Clerk Auth Object Documentation