[feat](trx-rs): add CCI/ACI bars to WFM panel with RDS mitigation

Estimate Co-Channel Interference (CCI) from pilot tone quadrature
leakage and coherence degradation.  Estimate Adjacent Channel
Interference (ACI) from CMA equalizer tap deviation from identity.
Both metrics (0-100 scale) are surfaced through RigFilterState and
displayed as colour-coded bars in the WFM control panel.

The RDS decoder quality parameter is now adaptively penalised when
CCI/ACI levels are elevated, reducing block-error rate under
interference conditions.

https://claude.ai/code/session_016EKzep42RCvE4GxvvRaCwu
Signed-off-by: Claude <noreply@anthropic.com>

src/trx-protocol/src/codec.rs

@@ -326,6 +326,8 @@ mod tests {
                 wfm_stereo: true,
                 wfm_stereo_detected: false,
                 wfm_denoise: trx_core::WfmDenoiseLevel::Auto,
+                wfm_cci: 0,
+                wfm_aci: 0,
                 sam_stereo_width: 1.0,
                 sam_carrier_sync: true,
             }),
@@ -372,6 +374,8 @@ mod tests {
                 wfm_stereo: true,
                 wfm_stereo_detected: true,
                 wfm_denoise: trx_core::WfmDenoiseLevel::Auto,
+                wfm_cci: 12,
+                wfm_aci: 45,
                 sam_stereo_width: 0.5,
                 sam_carrier_sync: false,
             }),
@@ -384,6 +388,8 @@ mod tests {
         assert_eq!(f.sdr_gain_db, Some(18.0));
         assert_eq!(f.wfm_deemphasis_us, 50);
         assert!(f.wfm_stereo_detected);
+        assert_eq!(f.wfm_cci, 12);
+        assert_eq!(f.wfm_aci, 45);
         assert_eq!(f.sam_stereo_width, 0.5);
         assert!(!f.sam_carrier_sync);
     }