Error trackers report what throws. The failures that cost the most throw nothing: a dead button, an overlay swallowing clicks, or a page that got slower after a Tuesday deploy. Nobody files a ticket, they just leave. HeronSignal catches those and ranks problems by sessions lost, not error count. Then it closes the loop. 40 read tools over MCP, so Claude/Cursor read your production directly. HeronAgent takes the diagnosis, writes the fix in a test-gated sandbox, and opens a draft PR for approval.
