refactor(llm): move transcription module into src/llm/ (#1559)

* refactor(llm): move transcription module into src/llm/

Transcription is an LLM capability (Whisper, Chat Completions audio).
Move it from a top-level module into src/llm/transcription/ to reflect
this, and update all references across the codebase.

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

* style: fix rustfmt formatting after module move

Co-Authored-By: Claude Opus 4.6 (1M context) <[email protected]>

---------

Co-authored-by: Claude Opus 4.6 (1M context) <[email protected]>

src/agent/agent_loop.rs

@@ -162,7 +162,7 @@ pub struct AgentDeps {
     /// HTTP interceptor for trace recording/replay.
     pub http_interceptor: Option<Arc<dyn crate::llm::recording::HttpInterceptor>>,
     /// Audio transcription middleware for voice messages.
-    pub transcription: Option<Arc<crate::transcription::TranscriptionMiddleware>>,
+    pub transcription: Option<Arc<crate::llm::transcription::TranscriptionMiddleware>>,
     /// Document text extraction middleware for PDF, DOCX, PPTX, etc.
     pub document_extraction: Option<Arc<crate::document_extraction::DocumentExtractionMiddleware>>,
     /// Sandbox readiness state for full-job routine dispatch.

src/config/transcription.rs

@@ -89,7 +89,9 @@ impl TranscriptionConfig {
     }
 
     /// Create the transcription provider if enabled and configured.
-    pub fn create_provider(&self) -> Option<Box<dyn crate::transcription::TranscriptionProvider>> {
+    pub fn create_provider(
+        &self,
+    ) -> Option<Box<dyn crate::llm::transcription::TranscriptionProvider>> {
         if !self.enabled {
             return None;
         }
@@ -103,10 +105,11 @@ impl TranscriptionConfig {
                     "Audio transcription enabled via Chat Completions API"
                 );
 
-                let mut provider = crate::transcription::ChatCompletionsTranscriptionProvider::new(
-                    api_key.clone(),
-                )
-                .with_model(&self.model);
+                let mut provider =
+                    crate::llm::transcription::ChatCompletionsTranscriptionProvider::new(
+                        api_key.clone(),
+                    )
+                    .with_model(&self.model);
 
                 if let Some(ref base_url) = self.base_url {
                     provider = provider.with_base_url(base_url);
@@ -121,7 +124,7 @@ impl TranscriptionConfig {
                 );
 
                 let mut provider =
-                    crate::transcription::OpenAiWhisperProvider::new(api_key.clone())
+                    crate::llm::transcription::OpenAiWhisperProvider::new(api_key.clone())
                         .with_model(&self.model);
 
                 if let Some(ref base_url) = self.base_url {

src/lib.rs

@@ -72,7 +72,6 @@ pub mod skills;
 pub mod timezone;
 pub mod tools;
 pub mod tracing_fmt;
-pub mod transcription;
 pub mod tunnel;
 pub mod util;
 pub mod webhooks;

src/llm/mod.rs

@@ -35,6 +35,7 @@ mod rig_adapter;
 pub mod session;
 pub mod smart_routing;
 mod token_refreshing;
+pub mod transcription;
 
 #[cfg(test)]
 mod codex_test_helpers;

src/main.rs

@@ -846,10 +846,11 @@ async fn async_main() -> anyhow::Result<()> {
         cost_guard: components.cost_guard,
         sse_tx: sse_sender,
         http_interceptor,
-        transcription: config
-            .transcription
-            .create_provider()
-            .map(|p| Arc::new(ironclaw::transcription::TranscriptionMiddleware::new(p))),
+        transcription: config.transcription.create_provider().map(|p| {
+            Arc::new(ironclaw::llm::transcription::TranscriptionMiddleware::new(
+                p,
+            ))
+        }),
         document_extraction: Some(Arc::new(
             ironclaw::document_extraction::DocumentExtractionMiddleware::new(),
         )),