f58eb0d976
cel_crsf_build_rc_frame tagged RC channel frames with 0x01, which is not a valid CRSF frame type. The TX module's CRSF parser never recognized these as channel updates, so it had no RC data to forward over RF and the receiver could never report link quality. Use CEL_CRSF_TYPE_RC_CHANNELS (0x16), the spec-correct RC Channels Packed type. Drop the bogus 0x01 enum value.