Session 61 (pre-merge): live-verification fixes from day-one rows

1. [settlement] armed boot line — settlement WAS scheduled (the tick runs
   settleAllOutcomes + settleAllLedgers FIRST at every snapshot slot,
   src/snapshotScheduler.js) but was invisible at boot. Now verifiable
   from logs forever.
2. Null locked_odds root cause (4 day-one rows, all betmgm SB unders):
   genuinely absent in the DB — the first-seen book row carried no juice
   for that side. indexOdds/indexProps now PREFER a book row with both
   sides priced (still a real row, never synthesized). Display was
   correct: absent beats wrong.
3. Verified retry-safe: 'Odds data temporarily unavailable' is the
   odds-api quota gate (oddsService:423) — thrown BEFORE any spend or
   cache write; runSnapshot errors write nothing; the next cron retries
   fresh with PropLine first.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/services/ledgerService.js

@@ -100,13 +100,17 @@ function teamOpponentFor(g, prop) {
   return { team, opponent: null };
 }
 
-/** Index odds props by nameKey|stat for lock/closing lookups. */
+/** Index odds props by nameKey|stat for lock/closing lookups.
+ *  Session 61 — prefer a book row with BOTH sides priced (same rule as
+ *  snapshotService.indexOdds): fewer genuinely-absent locked/closing odds
+ *  when another book carried the side. Real rows only, never synthesized. */
 function indexProps(props) {
   const map = {};
+  const bothSides = (p) => p && p.over_odds != null && p.under_odds != null;
   for (const p of props || []) {
     if (!p || !p.player || !p.stat_type) continue;
     const k = `${nameKey(p.player)}|${String(p.stat_type).toLowerCase()}`;
-    if (!map[k]) map[k] = p;
+    if (!map[k] || (!bothSides(map[k]) && bothSides(p))) map[k] = p;
   }
   return map;
 }