strip: remove pattern/surge/chat alert monitoring + unused commands

- delete services/{patternChecker,patternStore,surgeChecker,chatAlertChecker,staffNotifications,staffChannel,notificationRegistry,notificationEnabled,staffPresence}.js
- remove /notification, /staffnotification, /tag, /priority
- /escalate: drop action param, always unclaim
- purge PATTERN_*, SURGE_*, CHAT_ALERT_*, STAFF_* env vars from config + .env.example
- drop StaffNotification model
- ~2500 LOC removed
- settings-site /internal/notifications/* endpoints gone (UI will 404 until trimmed)

handlers/messages.js

@@ -7,8 +7,6 @@ const { extractRawEmail } = require('../utils');
 const { getGmailClient, sendGmailReply } = require('../services/gmail');
 const { updateTicketActivity } = require('../services/tickets');
 const { getNotifyDm } = require('../services/staffSettings');
-const { pingStaffChannel } = require('../services/staffChannel');
-const { notifyStaffOfReply } = require('../services/staffNotifications');
 
 const Ticket = mongoose.model('Ticket');
 
@@ -21,29 +19,6 @@ async function handleDiscordReply(m) {
   const ticket = await Ticket.findOne({ discordThreadId: m.channel.id }).lean();
   if (!ticket) return;
 
-  if (ticket.claimerId && m.author.id !== ticket.claimerId && ticket.staffChannelId) {
-    try {
-      const staffChan = await m.guild.channels.fetch(ticket.staffChannelId).catch(() => null);
-      if (staffChan) {
-        await pingStaffChannel(staffChan, ticket.claimerId, m);
-      }
-      const dmEnabled = await getNotifyDm(ticket.claimerId);
-      if (dmEnabled) {
-        const staffMember = await m.guild.members.fetch(ticket.claimerId).catch(() => null);
-        if (staffMember) {
-          const jumpLink = `https://discord.com/channels/${m.guild.id}/${m.channel.id}/${m.id}`;
-          await staffMember
-            .send(
-              `New customer reply in **${m.channel.name}**:\n> ${m.content.slice(0, 300)}\n[Jump to message](${jumpLink})`
-            )
-            .catch(() => {});
-        }
-      }
-    } catch (e) {
-      console.error('Staff ping error:', e);
-    }
-  }
-
   // Track whether last message is from staff or customer
   const memberForCheck = await m.guild.members.fetch(m.author.id).catch(() => null);
   const isStaffMember = memberForCheck && CONFIG.ROLE_ID_TO_PING && memberForCheck.roles.cache.has(CONFIG.ROLE_ID_TO_PING);
@@ -52,12 +27,19 @@ async function handleDiscordReply(m) {
     { $set: { lastMessageAuthorIsStaff: !!isStaffMember, lastActivity: new Date() } }
   ).catch(() => {});
 
-  // Notify claiming staff if a non-staff user replied (works for both Discord and email tickets)
-  if (ticket.claimerId && !isStaffMember) {
-    const guild = m.guild;
-    const freshTicket = await Ticket.findOne({ discordThreadId: m.channel.id }).lean();
-    if (freshTicket) {
-      await notifyStaffOfReply(guild, freshTicket, m).catch(e => console.error('notifyStaffOfReply:', e));
+  // DM the claimer if they have notifydm on and a non-staff user replied.
+  if (ticket.claimerId && !isStaffMember && m.author.id !== ticket.claimerId) {
+    const dmEnabled = await getNotifyDm(ticket.claimerId);
+    if (dmEnabled) {
+      const staffMember = await m.guild.members.fetch(ticket.claimerId).catch(() => null);
+      if (staffMember) {
+        const jumpLink = `https://discord.com/channels/${m.guild.id}/${m.channel.id}/${m.id}`;
+        await staffMember
+          .send(
+            `New customer reply in **${m.channel.name}**:\n> ${m.content.slice(0, 300)}\n[Jump to message](${jumpLink})`
+          )
+          .catch(() => {});
+      }
     }
   }