fix: resolve clippy lint warnings

- Remove unused import AsyncBufReadExt in compatible.rs
- Remove unused mut keywords from response and tx
- Remove unused variable 'name'
- Prefix unused parameters with _ in traits.rs

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/providers/compatible.rs

@@ -277,15 +277,11 @@ fn parse_sse_line(line: &str) -> StreamResult<Option<String>> {
 
 /// Convert SSE byte stream to text chunks.
 async fn sse_bytes_to_chunks(
-    mut response: reqwest::Response,
+    response: reqwest::Response,
     count_tokens: bool,
 ) -> stream::BoxStream<'static, StreamResult<StreamChunk>> {
-    use tokio::io::AsyncBufReadExt;
-
-    let name = "stream".to_string();
-
     // Create a channel to send chunks
-    let (mut tx, rx) = tokio::sync::mpsc::channel::<StreamResult<StreamChunk>>(100);
+    let (tx, rx) = tokio::sync::mpsc::channel::<StreamResult<StreamChunk>>(100);
 
     tokio::spawn(async move {
         // Buffer for incomplete lines

src/providers/traits.rs

@@ -308,9 +308,9 @@ pub trait Provider: Send + Sync {
     fn stream_chat_with_history(
         &self,
         messages: &[ChatMessage],
-        model: &str,
+        _model: &str,
-        temperature: f64,
+        _temperature: f64,
-        options: StreamOptions,
+        _options: StreamOptions,
     ) -> stream::BoxStream<'static, StreamResult<StreamChunk>> {
         let system = messages
             .iter()