CORPUS_AHEAD 16: 8 ranges left 20 of 40 connections idle

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

config/coordinator.ts

@@ -81,11 +81,11 @@ export default {
   corpus: {
     dir: env.get('CORPUS_DIR'),
     /**
-     * Capture ranges fetched into the corpus by connections the spool leaves idle, this many at a time: the
+     * Capture ranges fetched into the corpus by connections the spool leaves idle, this many at a time (8, 2 connections each, left 20 of 40 idle): the
      * spool only fetches what workers lease soon, and the tail comes first, so after a reset the capture
      * ranges waited behind it for hours (1,400 marked, none stored, 34 of 40 connections idle; LOG.md 2026-10-12 (27)).
      */
-    ahead: env.get('CORPUS_AHEAD', 8),
+    ahead: env.get('CORPUS_AHEAD', 16),
   },
   spool: {
     dir: env.get('SPOOL_DIR', app.tmpPath('spool')),