Add PWA support and miner race

apps/api/src/server.ts

@@ -28,6 +28,8 @@ export function buildApp() {
           "img-src": ["'self'", "data:"],
           "connect-src": ["'self'", "wss://relay.primal.net"],
           "font-src": ["'self'", "data:"],
+          "manifest-src": ["'self'"],
+          "worker-src": ["'self'"],
           "frame-ancestors": ["'none'"],
           "upgrade-insecure-requests": null,
         },
@@ -67,10 +69,21 @@ export function buildApp() {
 
   if (staticDir && fs.existsSync(staticDir)) {
     logger.info({ staticDir }, "serving web assets");
-    app.use(express.static(staticDir, { index: false, maxAge: "1h" }));
+    app.use(
+      express.static(staticDir, {
+        index: false,
+        maxAge: "1h",
+        setHeaders: (res, filePath) => {
+          if (filePath.endsWith("sw.js") || filePath.endsWith("manifest.webmanifest")) {
+            res.setHeader("Cache-Control", "no-cache");
+          }
+        },
+      }),
+    );
     app.get(/.*/, (_req, res, next) => {
       const indexFile = path.join(staticDir, "index.html");
       if (!fs.existsSync(indexFile)) return next();
+      res.setHeader("Cache-Control", "no-cache");
       res.sendFile(indexFile);
     });
   } else {