feat-auto-attributes

Changes

API token agent field and IP Magic Box user agents sync

Added optional agent on apitokens to link a token to a registered agent name (e.g. iptower) for neo-backend Bcyip-Agent validation on POST /documents.

On IP Magic Box token create/reuse (magic-box / Azure), user documents now update users.agents.ipmagicbox (version, platform, lastSeen) alongside legacy users.agent / boxVersion / currentJob.

Managed via Retool or Mongo — no new admin HTTP endpoints in this backend.