Fix CI: reinstall ESP Async WebServer from GitHub (required for all builds)

Co-authored-by: stritti <184547+stritti@users.noreply.github.com>

Author: Copilot

.github/workflows/ci.yml

@@ -80,10 +80,11 @@ jobs:
       - name: Install Homie library dependencies
         run: |
           # Install core dependencies from library.json
-          # ESP Async WebServer will be resolved per-platform by platformio ci
+          # ESP Async WebServer must be installed from GitHub to handle platform-specific variants correctly
           pio pkg install -g --library "ArduinoJson@~6.11.4"
           pio pkg install -g --library "AsyncMqttClient@^0.8.0"
           pio pkg install -g --library "Bounce2@^2.1.0"
+          pio pkg install -g --library "https://github.com/me-no-dev/ESPAsyncWebServer.git"
 
       - name: Install example dependencies
         continue-on-error: true