Fix WebSocket crash + heartbeat default 10min + docs refresh

- Wrap Baileys connection.update listeners in try-catch to prevent
  unhandled exceptions from crashing the relay process
- Add WebSocket-level error handlers in session.ts
- Add global unhandledRejection/uncaughtException handlers in index.ts
- Make listener.onClose error-safe with .catch() in auto-reply.ts
- Change default heartbeat from 30min to 10min
- Rewrite claude-config.md with personality, better explain personal
  assistant features, add recommended MCPs section

src/web/auto-reply.ts

@@ -45,7 +45,7 @@ export type WebMonitorTuning = {
 const formatDuration = (ms: number) =>
   ms >= 1000 ? `${(ms / 1000).toFixed(2)}s` : `${ms}ms`;
 
-const DEFAULT_REPLY_HEARTBEAT_MINUTES = 30;
+const DEFAULT_REPLY_HEARTBEAT_MINUTES = 10;
 export const HEARTBEAT_TOKEN = "HEARTBEAT_OK";
 export const HEARTBEAT_PROMPT = "HEARTBEAT ultrathink";
 
@@ -758,7 +758,13 @@ export async function monitorWebProvider(
     }
 
     const reason = await Promise.race([
-      listener.onClose ?? waitForever(),
+      listener.onClose?.catch((err) => {
+        reconnectLogger.error(
+          { error: String(err) },
+          "listener.onClose rejected",
+        );
+        return { status: 500, isLoggedOut: false, error: err };
+      }) ?? waitForever(),
       abortPromise ?? waitForever(),
     ]);