Counts (verified from git log): 1 new card, 79 card modifications. The day was about depth, not adds.
The corpus had grown fast enough by May 4 that depth quality varied a lot card to card. Some had full evidence, mechanism, conditions, and counter-evidence; others were essentially "operator said X in podcast intro" — citation-shaped but signal-thin. This day was a sweep to fix that.
What happened
- 40 shallow cards rewritten. Each got a substantive primary-source quote, a real mechanism section, and at least one signal/counter-evidence pair. The pattern: pick a card, go back to the source, find the load-bearing claim, rebuild around it.
- 39 borderline cards stub-flagged. Cards that weren't quite shallow enough to rewrite immediately, but needed a follow-up pass. Marked in frontmatter so the next audit could find them quickly.
- Sam Mallikarjunan card replaced — the original was a podcast-intro paraphrase. Rebuilt around a substantive claim he made in a different source.
- Sourav Mohanty insight re-attributed — the original claim had been mis-tagged to the wrong operator; corrected. Also fixed the Kesava LinkedIn URL (it had a stale slug).
The bar this set: no card stays in the corpus if its evidence wouldn't survive being read by the operator it credits.