Fix progress bar jumping and slow exit

Progress bar:
- Only use local progress for UI (smoother)
- Server PROGRESS messages logged but don't update UI

Exit delays reduced from ~850ms to ~140ms:
- stop(): 150ms -> 30ms
- onExit(): 700ms -> 110ms

src/activities/network/CrossPointWebServerActivity.cpp

@@ -84,9 +84,8 @@ void CrossPointWebServerActivity::onExit() {
     dnsServer = nullptr;
   }
 
-  // CRITICAL: Wait for LWIP stack to flush any pending packets
-  Serial.printf("[%lu] [WEBACT] Waiting 500ms for network stack to flush pending packets...\n", millis());
-  delay(500);
+  // Brief wait for LWIP stack to flush pending packets
+  delay(50);
 
   // Disconnect WiFi gracefully
   if (isApMode) {
@@ -96,11 +95,11 @@ void CrossPointWebServerActivity::onExit() {
     Serial.printf("[%lu] [WEBACT] Disconnecting WiFi (graceful)...\n", millis());
     WiFi.disconnect(false);  // false = don't erase credentials, send disconnect frame
   }
-  delay(100);  // Allow disconnect frame to be sent
+  delay(30);  // Allow disconnect frame to be sent
 
   Serial.printf("[%lu] [WEBACT] Setting WiFi mode OFF...\n", millis());
   WiFi.mode(WIFI_OFF);
-  delay(100);  // Allow WiFi hardware to fully power down
+  delay(30);  // Allow WiFi hardware to power down
 
   Serial.printf("[%lu] [WEBACT] [MEM] Free heap after WiFi disconnect: %d bytes\n", millis(), ESP.getFreeHeap());
 

src/network/CrossPointWebServer.cpp

@@ -145,16 +145,14 @@ void CrossPointWebServer::stop() {
     Serial.printf("[%lu] [WEB] WebSocket server stopped\n", millis());
   }
 
-  // Add delay to allow any in-flight handleClient() calls to complete
-  delay(100);
-  Serial.printf("[%lu] [WEB] Waited 100ms for handleClient to finish\n", millis());
+  // Brief delay to allow any in-flight handleClient() calls to complete
+  delay(20);
 
   server->stop();
   Serial.printf("[%lu] [WEB] [MEM] Free heap after server->stop(): %d bytes\n", millis(), ESP.getFreeHeap());
 
-  // Add another delay before deletion to ensure server->stop() completes
-  delay(50);
-  Serial.printf("[%lu] [WEB] Waited 50ms before deleting server\n", millis());
+  // Brief delay before deletion
+  delay(10);
 
   server.reset();
   Serial.printf("[%lu] [WEB] Web server stopped and deleted\n", millis());

src/network/html/FilesPage.html

@@ -887,11 +887,9 @@ function uploadFileWebSocket(file, onProgress, onComplete, onError) {
           reject(err);
         }
       } else if (msg.startsWith('PROGRESS:')) {
-        // Server confirmed progress - we can use this for accurate tracking
-        const parts = msg.split(':');
-        const received = parseInt(parts[1]);
-        const total = parseInt(parts[2]);
-        if (onProgress) onProgress(received, total);
+        // Server confirmed progress - log for debugging but don't update UI
+        // (local progress is smoother, server progress causes jumping)
+        console.log('[WS] Server progress:', msg);
       } else if (msg === 'DONE') {
         ws.close();
         if (onComplete) onComplete();