Pipe winston logs to dashboard + add Matrix sniff debug route

The dashboard's /api/logs buffer only ever saw lines explicitly pushed
via broadcaster.push, so winston output (including the Matrix
token-extractor's timeout diagnostics) was invisible from the deployed
container. Attach a winston transport that forwards every entry into the
LogBroadcaster before the rest of bootstrap runs, so the matrix sniff's
`finalUrl=... hosts=[...]` line shows up in /api/logs.

Also serve data/matrix-debug.png (the screenshot the extractor drops on
timeout) at /api/debug/matrix-debug.png so we can see what
chat.reddit.com looked like in the headed browser without shell access
to the Dokploy host.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/web/server.ts

@@ -46,7 +46,7 @@ export class WebServer {
   private app: express.Application;
   private server: Server | null = null;
   private activity: ActivityLog;
-  private broadcaster = new LogBroadcaster();
+  private broadcaster: LogBroadcaster;
   private botRunning = false;
   private messagesThisHour = 0;
   private runtimeConfig: RuntimeConfig;
@@ -62,7 +62,9 @@ export class WebServer {
     private successfulMessagesRepo: SuccessfulMessagesRepository,
     private activityLogRepo: ActivityLogRepository,
     private logger: Logger,
+    broadcaster?: LogBroadcaster,
   ) {
+    this.broadcaster = broadcaster ?? new LogBroadcaster();
     this.activity = new ActivityLog(activityLogRepo);
     this.runtimeConfig = {
       rateLimit: {
@@ -103,6 +105,16 @@ export class WebServer {
   }
 
   private setupRoutes(): void {
+    // index.html serves the entire inline JS — never cache it.
+    this.app.use((req, res, next) => {
+      if (req.path === '/' || req.path === '/index.html') {
+        const p = path.join(process.cwd(), 'public', 'index.html');
+        res.set('Cache-Control', 'no-cache, no-store, must-revalidate');
+        return res.sendFile(p);
+      }
+      next();
+    });
+
     this.app.use('/media', express.static(path.join(process.cwd(), 'data', 'media')));
     this.app.use(express.static(path.join(process.cwd(), 'public')));
     this.app.use(express.json());