style: fix clippy warnings and typescript errors

- Add allow(dead_code) for CircuitBreaker::get_state (reserved for future)
- Fix all uninlined format string warnings (27 instances)
- Use inline format syntax for better readability
- Fix unused import and parameter warnings in ProviderActions.tsx
- Achieve zero warnings in both Rust and TypeScript

src-tauri/src/proxy/circuit_breaker.rs

@@ -202,6 +202,7 @@ impl CircuitBreaker {
     }
 
     /// 获取当前状态
+    #[allow(dead_code)]
     pub async fn get_state(&self) -> CircuitState {
         *self.state.read().await
     }

src-tauri/src/proxy/provider_router.rs

@@ -34,12 +34,12 @@ impl ProviderRouter {
         let current_id = self
             .db
             .get_current_provider(app_type)?
-            .ok_or_else(|| AppError::Config(format!("No current provider for {}", app_type)))?;
+            .ok_or_else(|| AppError::Config(format!("No current provider for {app_type}")))?;
 
         let providers = self.db.get_all_providers(app_type)?;
         let provider = providers
             .get(&current_id)
-            .ok_or_else(|| AppError::Config(format!("Current provider {} not found", current_id)))?
+            .ok_or_else(|| AppError::Config(format!("Current provider {current_id} not found")))?
             .clone();
 
         log::info!(