Add provider info to meta.extra in streaming responses

crates/owhisper-interface/src/stream.rs

@@ -191,6 +191,18 @@ impl StreamResponse {
         }
     }
 
+    pub fn set_provider(&mut self, provider: &str) {
+        if let StreamResponse::TranscriptResponse { metadata, .. } = self {
+            let entry = metadata
+                .extra
+                .get_or_insert_with(std::collections::HashMap::new);
+            entry.insert(
+                "provider".to_string(),
+                serde_json::Value::String(provider.to_string()),
+            );
+        }
+    }
+
     pub fn remap_channel_index(&mut self, from: i32, to: i32) {
         if let StreamResponse::TranscriptResponse { channel_index, .. } = self
             && !channel_index.is_empty()

crates/transcribe-proxy/src/routes/streaming/hyprnote.rs

@@ -78,8 +78,9 @@ fn build_response_transformer(
     provider: Provider,
 ) -> impl Fn(&str) -> Option<String> + Send + Sync + 'static {
     let mistral_adapter = MistralAdapter::default();
+    let provider_name = format!("{:?}", provider).to_lowercase();
     move |raw: &str| {
-        let responses: Vec<owhisper_interface::stream::StreamResponse> = match provider {
+        let mut responses: Vec<owhisper_interface::stream::StreamResponse> = match provider {
             Provider::Deepgram => DeepgramAdapter.parse_response(raw),
             Provider::AssemblyAI => AssemblyAIAdapter.parse_response(raw),
             Provider::Soniox => SonioxAdapter.parse_response(raw),
@@ -95,6 +96,10 @@ fn build_response_transformer(
             return None;
         }
 
+        for response in &mut responses {
+            response.set_provider(&provider_name);
+        }
+
         if responses.len() == 1 {
             return serde_json::to_string(&responses[0]).ok();
         }