query
fun queryPropositions(mode: String, text: String? = null, entityId: String? = null, from: String? = null, to: String? = null, topK: Int = DEFAULT_TOP_K, depth: Int = DEFAULT_DEPTH): <Error class: unknown class>
Retrieve propositions via a chosen retrieval mode (vector, entity, graph-walk, temporal, or hybrid). Returns the leak-free result, including a supported flag that is false when the requested mode's backing capability is absent (a graceful, non-scanning degradation).