Public metadata should serve conversation, not bureaucracy.
The structure has to earn its keep.
A title helps.
A topic helps.
A source trail helps.
A conversation starter helps.
A confidence label helps.
But only if those things make the note easier to understand, search, connect, or respond to.
The danger is building a classification system that looks impressive and feels dead.
That is not the goal.
The metadata should stay close to the work.
What is this note?
Where did it come from?
How certain is it?
What could someone ask next?
If the metadata can answer those questions, it is doing its job.