huge changes

handlers/pendingCloses.js

@@ -0,0 +1,8 @@
+/**
+ * Shared pending-close timer map.
+ * Keyed by channel.id → { timeout, userId, username }.
+ * Used by buttons.js (sets timers) and commands.js (cancel-close clears them).
+ */
+const pendingCloses = new Map();
+
+module.exports = { pendingCloses };