Fix P1 Rust: remove unused imports (clippy -D warnings)

products/01-llm-cost-router/src/proxy/handler.rs

@@ -2,20 +2,18 @@ use anyhow::Result;
 use axum::{
     body::Body,
     extract::State,
-    http::{HeaderMap, Request, StatusCode},
+    http::{HeaderMap, StatusCode},
-    response::{IntoResponse, Response, Sse},
+    response::{IntoResponse, Response},
     routing::post,
     Router,
 };
 use std::sync::Arc;
 use tokio::sync::mpsc;
-use tracing::{info, warn};
 
-use super::middleware;
 
 use crate::auth::AuthProvider;
 use crate::config::AppConfig;
-use crate::data::{EventQueue, TelemetryEvent};
+use crate::data::TelemetryEvent;
 use crate::router::RouterBrain;
 
 pub struct ProxyState {

products/01-llm-cost-router/src/proxy/middleware.rs

@@ -1,6 +1,5 @@
 // Proxy middleware — API key redaction in error traces
 use axum::http::HeaderMap;
-use tracing::warn;
 
 /// Redact any Bearer tokens or API keys from a string.
 /// Used in panic handlers and error logging to prevent key leakage.

products/01-llm-cost-router/src/router/mod.rs

@@ -1,5 +1,4 @@
 use serde::{Deserialize, Serialize};
-use crate::auth::AuthContext;
 
 /// Routing decision made by the Router Brain
 #[derive(Debug, Clone, Serialize)]