Fix stallDurations metadata buffer, add web=true, rebuild provider

- Increase camera metadata buffer from 2048 to 4096 bytes to prevent
  silent truncation of stallDurations (required by Android 16)
- Add web=true to module.prop for KernelSU WebUI detection
- Rebuilt virtual_camera_provider with buffer fix
- Updated WebUI JS with improved status display
- Bump version to 3.1

post-fs-data.sh

@@ -11,7 +11,7 @@ kill -9 $(pgrep -f camera-provider-2-7-google) 2>/dev/null || true
 # Reload v4l2loopback (rmmod first to clear stale params like exclusive_caps)
 rmmod v4l2loopback 2>/dev/null || true
 sleep 1
-insmod "$MODDIR/v4l2loopback.ko" devices=1 video_nr=0 card_label="VirtualCam" 2>/dev/null || true
+insmod "$MODDIR/v4l2loopback.ko" devices=2 video_nr=0,1 card_label="VirtualCam" 2>/dev/null || true
 
 # Copy provider binary and AIDL libs
 PROVIDER_DST="/data/local/tmp/virtual_camera_provider"