[fix](trx-backend-soapysdr,trx-frontend-http): make wfm mono mode real

Co-authored-by: Codex <codex@openai.com>
Signed-off-by: Stan Grams <sjg@haxx.space>

src/trx-protocol/src/codec.rs

@@ -298,6 +298,7 @@ mod tests {
                 fir_taps: 64,
                 cw_center_hz: 700,
                 wfm_deemphasis_us: 75,
+                wfm_stereo: true,
                 wfm_denoise: true,
             }),
             ..minimal_snapshot()
@@ -335,6 +336,7 @@ mod tests {
                 fir_taps: 128,
                 cw_center_hz: 700,
                 wfm_deemphasis_us: 50,
+                wfm_stereo: true,
                 wfm_denoise: true,
             }),
             ..minimal_snapshot()

src/trx-protocol/src/mapping.rs

@@ -51,6 +51,7 @@ pub fn client_command_to_rig(cmd: ClientCommand) -> RigCommand {
         ClientCommand::SetWfmDeemphasis { deemphasis_us } => {
             RigCommand::SetWfmDeemphasis(deemphasis_us)
         }
+        ClientCommand::SetWfmStereo { enabled } => RigCommand::SetWfmStereo(enabled),
         ClientCommand::SetWfmDenoise { enabled } => RigCommand::SetWfmDenoise(enabled),
         ClientCommand::GetSpectrum => RigCommand::GetSpectrum,
     }
@@ -96,6 +97,7 @@ pub fn rig_command_to_client(cmd: RigCommand) -> ClientCommand {
         RigCommand::SetWfmDeemphasis(deemphasis_us) => {
             ClientCommand::SetWfmDeemphasis { deemphasis_us }
         }
+        RigCommand::SetWfmStereo(enabled) => ClientCommand::SetWfmStereo { enabled },
         RigCommand::SetWfmDenoise(enabled) => ClientCommand::SetWfmDenoise { enabled },
         RigCommand::GetSpectrum => ClientCommand::GetSpectrum,
     }

src/trx-protocol/src/types.rs

@@ -39,6 +39,7 @@ pub enum ClientCommand {
     SetBandwidth { bandwidth_hz: u32 },
     SetFirTaps { taps: u32 },
     SetWfmDeemphasis { deemphasis_us: u32 },
+    SetWfmStereo { enabled: bool },
     SetWfmDenoise { enabled: bool },
     GetSpectrum,
 }