replay in web UI

server/src/services/replaySocketService.js

@@ -0,0 +1,45 @@
+const io = require('../globals/io');
+const logger = require('../globals/logger').child('replaySocket');
+const { getMode, MODES } = require('./modeManager');
+const { publishEvent } = require('./eventBus');
+const { tryTriggerReplay } = require('./replayService');
+const { getNickname } = require('./nicknameService');
+const { loadConfig } = require('../helpers/configLoader');
+
+const config = loadConfig();
+const discordConfig = config.discord || {};
+
+function buildRequesterLabel(socket) {
+  return getNickname(socket) || socket?.data?.user?.username || socket?.id || 'unknown';
+}
+
+io.on('connection', (socket) => {
+  socket.on('replay:trigger', (payload = {}, cb = () => {}) => {
+    if (getMode() === MODES.LOCKDOWN) {
+      cb({ error: 'Replay disabled in lockdown', state: null });
+      return;
+    }
+    const channelId = discordConfig?.channels?.replay || null;
+    if (!channelId) {
+      cb({ error: 'Replay channel not configured', state: null });
+      return;
+    }
+    const requester = buildRequesterLabel(socket);
+    const attempt = tryTriggerReplay({ by: { source: 'web', requester } });
+    if (!attempt.ok) {
+      cb({ error: 'Replay cooldown active', remainingMs: attempt.remainingMs, state: attempt.state });
+      return;
+    }
+    publishEvent({
+      source: 'replaySocket',
+      type: 'replay.requested',
+      payload: {
+        channelId,
+        requester,
+        requestedBy: { socketId: socket.id },
+      },
+    });
+    logger.info('Replay requested via web', { socketId: socket.id });
+    cb({ success: true, state: attempt.state });
+  });
+});