fix: cap Discord gateway reconnect attempts to prevent infinite loop

The Discord GatewayPlugin was configured with maxAttempts: Infinity,
which causes an unbounded reconnection loop when the Discord gateway
enters a persistent failure state (e.g. code 1005 with stalled HELLO).

In production, this manifested as 2,483+ reconnection attempts in a
single log file, starving the Node.js event loop and preventing cron,
heartbeat, and other subsystems from functioning.

Cap maxAttempts at 50, which provides ~25 minutes of retry time
(with 30s HELLO timeout between attempts) before cleanly exiting
via the existing "Max reconnect attempts" error handler.

Closes #11836

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

src/discord/monitor/provider.ts

@@ -504,7 +504,7 @@ export async function monitorDiscordProvider(opts: MonitorDiscordOpts = {}) {
     [
       new GatewayPlugin({
         reconnect: {
-          maxAttempts: Number.POSITIVE_INFINITY,
+          maxAttempts: 50,
         },
         intents: resolveDiscordGatewayIntents(discordCfg.intents),
         autoInteractions: true,