chore: restore 2 repos with exactly 100 stars

After the star rule was relaxed from >100 to >=100, two repos that
were previously queued for removal now pass: PredicateFlow (100★, 7
contribs) and Ecno (100★, 4 contribs). Restored.

GraphLayout (100★, 1 contrib) still fails the contributor rule and
stays removed.

Net PR 3308 delta: 497 removals (was 499).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>