Method freshness

quantmind/knowledge/_base.py:118–121

Time elapsed since ``as_of``. Defaults ``now`` to ``utcnow()``.

(self, now: datetime | None = None)

    # Provenance (no bare strings)
    source: SourceRef
    extraction: ExtractionRef | None = None

    # Trust
    confidence: Literal["low", "medium", "high"] = "medium"

    # Citations & tags