What Umwelt does not do

• It does not generate or read free text. No model is called anywhere in the engine; claims to check and vectors to search come from the client.
• It does not resolve contradictions. A belief against canon is reported, never corrected.
• It does not infer. Presence, awareness and group membership never become knowledge. Every grant is an explicit record.
• It does not apply policy. Decay, trust and secrecy rules belong to the client; the engine records and reports.
• It does not delete confirmed history. Only drafts that were never promoted can be purged.
• It is not a database you query directly. SQLite is an implementation detail behind the engine.

If you want something that guesses what a character probably knows, this is the wrong tool. Umwelt is for when you need to be able to prove it.