Conformance posture: SOSA / SSN

Standard: W3C Semantic Sensor Network (SSN) ontology and its core SOSA (Sensor, Observation, Sample, and Actuator) module.

v0.1 posture: nous aligns its Observation and Estimate types (src/nous/types.py) with the SOSA concepts of observation (Observation), result (result), and feature of interest (the implicit subsystem). The alignment is conceptual; no JSON-LD or RDF emission ships in v0.1.

Tracking: A SOSA JSON-LD adapter is a candidate follow-up under BL-047 if downstream consumers need it. The SensorThings adapter already carries the SOSA-aligned field names.