Browser extension: detect and subscribe to standard.site publications on ATProto

docs: add a screenshot-backed reference for every status state master

docs/status-states.md explains the badge vocabulary and pill weighting with real captures: scripts/capture-status-docs.mjs drives a headless Chrome running the built extension, seeds or genuinely triggers each state (external DNS is mapped to localhost, so failure states are real failures), and screenshots the actual popup. Badge tiles are drawn from the running worker's badgeFor specs via a new __substandard debug hook, since headless Chrome renders no toolbar. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>