feat: sniper redeem - winners only, high gas, no startup check

- Remove startup redeem check (only runs on interval)
- Only redeem WINNING positions (skip losses for manual cleanup)
- Increase gas fees: 1.5x estimate, min 50 Gwei priority fee
- Add tx hash logging for successful redeems

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/sniper.js

@@ -69,12 +69,12 @@ function logSchedule() {
 let redeemTimer = null;
 
 function startRedeemer() {
-    redeemSniperPositions().catch((err) => logger.error('Sniper redeemer error:', err.message));
+    // Only run on interval, NOT on startup (we only want to redeem NEW winning positions)
     redeemTimer = setInterval(
         () => redeemSniperPositions().catch((err) => logger.error('Sniper redeemer error:', err.message)),
         config.redeemInterval,
     );
-    logger.info(`Sniper redeemer started — checking every ${config.redeemInterval / 1000}s`);
+    logger.info(`Sniper redeemer started — checking every ${config.redeemInterval / 1000}s (winners only, no startup check)`);
 }
 
 // ── Market handler ────────────────────────────────────────────────────────────