SiteLens: an AI safety agent for construction sites that spots hazards, gets a human to confirm them, and tracks each one until it's fixed.A camera frame is checked for missing hard hats by Liquid's LFM2.5-VL vision model, running on the laptop at the site, so images never go to a cloud model. Each alert is linked to an OSHA rule that Nimble checked against the official osha.gov text. Nimble also reads the live National Weather Service forecast: high wind or a wind advisory escalates the crane zone to critical. Every detection, review, fix and raw Nimble response is stored in RawTree, an append-only evidence log. The agent itself keeps only a small, constantly rewritten "state card" instead of the whole history.
