refactor(bridge): remove SonoraExperimental from bridge API and regenerate FRB

Remove SonoraExperimental variant from BridgeIosVoiceProcessingMode
and collapse all match arms in the bridge config builder. Regenerate
flutter_rust_bridge bindings and update Podfile.lock.

apps/chanora_flutter/ios/Podfile.lock

@@ -23,7 +23,7 @@ EXTERNAL SOURCES:
     :path: ".symlinks/plugins/haptic_kit/ios"
 
 SPEC CHECKSUMS:
-  chanora_bridge: 26252acdf9ca660ce9c132ad25cd5ad5af467b16
+  chanora_bridge: 27a03592058709f6f38701343eb51c3a55b02da0
   Flutter: cabc95a1d2626b1b06e7179b784ebcf0c0cde467
   flutter_foreground_task: a159d2c2173b33699ddb3e6c2a067045d7cebb89
   haptic_kit: b22c4fbb2aa7b0d66f2891f81a9e950ad2de5758

apps/chanora_flutter/lib/src/rust/api.dart

@@ -1339,11 +1339,8 @@ sealed class BridgeEvent with _$BridgeEvent {
 
 /// Bridge iOS voice-processing mode.
 enum BridgeIosVoiceProcessingMode {
-  /// Shipping VPIO path.
+  /// Apple VoiceProcessingIO path.
   platformVoiceProcessing,
-
-  /// Experimental Sonora path.
-  sonoraExperimental,
 }
 
 @freezed

crates/chanora_bridge/src/api.rs

@@ -1062,10 +1062,8 @@ pub enum BridgeAudioRoute {
 /// Bridge iOS voice-processing mode.
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 pub enum BridgeIosVoiceProcessingMode {
-    /// Shipping VPIO path.
+    /// Apple VoiceProcessingIO path.
     PlatformVoiceProcessing,
-    /// Experimental Sonora path.
-    SonoraExperimental,
 }
 
 /// Bridge processing backend.
@@ -1223,7 +1221,6 @@ impl From<BridgeIosVoiceProcessingMode> for chanora_core::IosVoiceProcessingMode
     fn from(mode: BridgeIosVoiceProcessingMode) -> Self {
         match mode {
             BridgeIosVoiceProcessingMode::PlatformVoiceProcessing => Self::PlatformVoiceProcessing,
-            BridgeIosVoiceProcessingMode::SonoraExperimental => Self::SonoraExperimental,
         }
     }
 }
@@ -1234,7 +1231,6 @@ impl From<chanora_core::IosVoiceProcessingMode> for BridgeIosVoiceProcessingMode
             chanora_core::IosVoiceProcessingMode::PlatformVoiceProcessing => {
                 Self::PlatformVoiceProcessing
             }
-            chanora_core::IosVoiceProcessingMode::SonoraExperimental => Self::SonoraExperimental,
         }
     }
 }
@@ -2361,25 +2357,11 @@ pub async fn set_ios_voice_processing_mode(
     let config = BridgeAudioProcessingConfig {
         route: BridgeAudioRoute::Speaker,
         ios_mode: mode,
-        processing_backend: match mode {
+        processing_backend: BridgeAudioBackend::PlatformVoiceProcessing,
-            BridgeIosVoiceProcessingMode::PlatformVoiceProcessing => {
-                BridgeAudioBackend::PlatformVoiceProcessing
-            }
-            BridgeIosVoiceProcessingMode::SonoraExperimental => BridgeAudioBackend::WebrtcApm,
-        },
         vad_backend: BridgeVadBackend::SileroOnnx,
-        aec: match mode {
+        aec: BridgeEffectOwner::Platform,
-            BridgeIosVoiceProcessingMode::PlatformVoiceProcessing => BridgeEffectOwner::Platform,
+        ns: BridgeEffectOwner::Platform,
-            BridgeIosVoiceProcessingMode::SonoraExperimental => BridgeEffectOwner::WebrtcApm,
+        agc: BridgeEffectOwner::Platform,
-        },
-        ns: match mode {
-            BridgeIosVoiceProcessingMode::PlatformVoiceProcessing => BridgeEffectOwner::Platform,
-            BridgeIosVoiceProcessingMode::SonoraExperimental => BridgeEffectOwner::WebrtcApm,
-        },
-        agc: match mode {
-            BridgeIosVoiceProcessingMode::PlatformVoiceProcessing => BridgeEffectOwner::Platform,
-            BridgeIosVoiceProcessingMode::SonoraExperimental => BridgeEffectOwner::WebrtcApm,
-        },
         hpf_enabled: true,
         limiter_enabled: true,
         vad_hangover_ms: 500,

crates/chanora_bridge/src/frb_generated.rs

@@ -2409,7 +2409,6 @@ impl SseDecode for crate::api::BridgeIosVoiceProcessingMode {
         let mut inner = <i32>::sse_decode(deserializer);
         return match inner {
             0 => crate::api::BridgeIosVoiceProcessingMode::PlatformVoiceProcessing,
-            1 => crate::api::BridgeIosVoiceProcessingMode::SonoraExperimental,
             _ => unreachable!(
                 "Invalid variant for BridgeIosVoiceProcessingMode: {}",
                 inner
@@ -3445,7 +3444,6 @@ impl flutter_rust_bridge::IntoDart for crate::api::BridgeIosVoiceProcessingMode
     fn into_dart(self) -> flutter_rust_bridge::for_generated::DartAbi {
         match self {
             Self::PlatformVoiceProcessing => 0.into_dart(),
-            Self::SonoraExperimental => 1.into_dart(),
             _ => unreachable!(),
         }
     }
@@ -4215,7 +4213,6 @@ impl SseEncode for crate::api::BridgeIosVoiceProcessingMode {
         <i32>::sse_encode(
             match self {
                 crate::api::BridgeIosVoiceProcessingMode::PlatformVoiceProcessing => 0,
-                crate::api::BridgeIosVoiceProcessingMode::SonoraExperimental => 1,
                 _ => {
                     unimplemented!("");
                 }