Bring the counts the comments and README quote back to the catalogue

Measured on the published catalogue at this commit, through starSurfaceOf and starReadouts:

- star-readouts.ts said 11 546 derived radii read "from its type": 10 702 giants with a colour and
  844 stars with none. That left out the 26 dwarfs whose colour is off the table, and the colour
  Gaia now gives 931 HYG-described stars moved the rest: 10 953 = 10 713 giants with a colour,
  214 stars with none (GJ 3655 among them) and those 26. 5 more read "from its temperature".
- stellar.ts said 821 dwarfs are placed at their type's row. Counted over every star that is not a
  giant and whose colour the table does not read: 224 with no colour and 36 with one off the table.
- The README still said the card marks every derived radius "from colour and brightness"; it now
  names the three bases the card gives.
- build.ts's survivor breakdown, after θ¹ Ori A left: 11 464 HYG stars without a Gaia counterpart,
  8 307 of them past 250 pc, 1 660 of those naked-eye.

Comments and documentation only.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

tools/etl/build.ts

@@ -249,8 +249,8 @@ function validateStars(stars: StarRecord[]): void {
  * The other failure leaves no close pair at all, because proper motion had already carried the
  * two entries tens of arcseconds apart — the 2026-08-24 refresh, where HYG sat at epoch 2000.0
  * and Gaia at J2016.0. What it does leave is HYG rows that found no counterpart: 36 056 of them
- * against the 11 465 today, and no counterpart was possible for most of those. 8 308 of them are
- * every star beyond 250 pc but the archive's planet hosts, which the main query never downloads: 1 661
+ * against the 11 464 today, and no counterpart was possible for most of those. 8 307 of them are
+ * every star beyond 250 pc but the archive's planet hosts, which the main query never downloads: 1 660
  * naked-eye stars kept at any distance, and 6 647 fainter ones that Hipparcos put inside
  * `ETL_STAR_DISTANCE_PC` while Gaia's parallax puts them past `ETL_GAIA_DISTANCE_PC`. The other
  * 3 156 are what Gaia genuinely lacks: 1 202 brighter than V 8, which it saturates on or measures
@@ -261,7 +261,7 @@ function validateStars(stars: StarRecord[]): void {
  * This bounds a merge that went wrong, and — loosely — a Gaia download that came back short: a
  * truncated answer leaves the HYG rows whose counterpart it dropped without one, so survivors go
  * *up*, not down. Measured on the main query when it was the only one, with 10 886 survivors
- * against today's 11 465: 11 004 at nine tenths of its rows, 12 711 at half, 16 258 at a third. So
+ * against today's 11 464: 11 004 at nine tenths of its rows, 12 711 at half, 16 258 at a third. So
  * this ceiling only catches a deep truncation, and `fetchGaiaStars` catches the shallower ones
  * with a row floor on each query.
  */