radar-lab-sweeplisted

# Lab sweep — every run, no rotation A real research radar checks the labs themselves every single day. This sweep is mandatory on every daily run and is separate from (and in addition to) the rotating exploration slot. Official lab/vendor blogs are primary sources under the Hard rules, so anything found here is citable evidence. The CHECK (fetch every feed and see what is new since the last scan) is owed on EVERY run, even one minute after another pass — it is cheap triage and may never be skipped as a "light pass". Only the EXTRACT (open a new post in full) is conditional on a genuinely new entry. ## Method (efficient) 1. For each source in the list, fetch its FEED first (RSS/Atom), not the HTML index — feeds are immune to the JS-rendering that hid `lmsys.org/blog`. To find a feed: try `/rss.xml`, `/feed`, `/atom.xml`, `/index.xml`, or read the page's `<link rel="alternate" type="application/rss+xml">`. 2. Open only entries dated AFTER the last daily scan (check the previous date in `logs/source_rotation.md`). Skip everything older — this keeps the sweep cheap. 3. Apply the evidence rules: open the actual post, cite its own date, match to a trend or log to `observation_queue`/`study_shelf` as appropriate. 4. Log the sweep in `logs/source_rotation.md` every run, even when nothing is new ("lab-sweep: no new posts"). ## Source list The list lives in `SOURCES.md` → "Lab & big-tech AI blogs" (agent-owned: mark feeds `DEAD` if they stop resolving, add new