fix(discord): unify reconnect watchdog and land #31025/#30530

Landed follow-up intent from contributor PR #31025 (@theotarr) and PR #30530 (@liuxiaopai-ai).

Co-authored-by: theotarr <theotarr@users.noreply.github.com>
Co-authored-by: liuxiaopai-ai <liuxiaopai-ai@users.noreply.github.com>

src/discord/monitor/status.ts

@@ -0,0 +1,18 @@
+export type DiscordMonitorStatusPatch = {
+  connected?: boolean;
+  lastEventAt?: number | null;
+  lastConnectedAt?: number | null;
+  lastDisconnect?:
+    | string
+    | {
+        at: number;
+        status?: number;
+        error?: string;
+        loggedOut?: boolean;
+      }
+    | null;
+  lastInboundAt?: number | null;
+  lastError?: string | null;
+};
+
+export type DiscordMonitorStatusSink = (patch: DiscordMonitorStatusPatch) => void;