fix: restore Windows webcam stream support by conditionally delegating to frontend events

client/internal/camera/camera_other.go

@@ -4,6 +4,8 @@ package camera
 
 import "log"
 
+const IsNative = false
+
 // StartCapture is a no-op on non-darwin platforms (Windows uses different webcam API)
 func StartCapture() error {
 	log.Println("[CAMERA] Native camera capture not supported on this platform")