style: apply cargo fmt after Issue #128 merge

Signed-off-by: Michael A. Kuykendall <michaelallenkuykendall@gmail.com>

src/engine/llama.rs

@@ -46,18 +46,19 @@ use tracing::info;
 use std::sync::OnceLock;
 
 #[cfg(feature = "llama")]
-static LLAMA_BACKEND: OnceLock<Result<shimmy_llama_cpp_2::llama_backend::LlamaBackend, String>> = OnceLock::new();
+static LLAMA_BACKEND: OnceLock<Result<shimmy_llama_cpp_2::llama_backend::LlamaBackend, String>> =
+    OnceLock::new();
 
 #[cfg(feature = "llama")]
 fn get_or_init_backend() -> Result<&'static shimmy_llama_cpp_2::llama_backend::LlamaBackend> {
     use anyhow::anyhow;
-    
+
     let result = LLAMA_BACKEND.get_or_init(|| {
         info!("Initializing llama.cpp backend (first model load)");
         shimmy_llama_cpp_2::llama_backend::LlamaBackend::init()
             .map_err(|e| format!("Failed to initialize llama backend: {}", e))
     });
-    
+
     result.as_ref().map_err(|e| anyhow!("{}", e))
 }
 
@@ -273,7 +274,7 @@ impl InferenceEngine for LlamaEngine {
             use anyhow::anyhow;
             use shimmy_llama_cpp_2 as llama;
             use std::num::NonZeroU32;
-            
+
             // Use global singleton backend (fixes Issue #128: BackendAlreadyInitialized)
             let be = get_or_init_backend()?;
 

tests/regression/issue_128_backend_reinitialization.rs

@@ -1,32 +1,32 @@
-/// Regression test for Issue #128: BackendAlreadyInitialized error on second request
-///
-/// GitHub: https://github.com/Michael-A-Kuykendall/shimmy/issues/128
-///
-/// **Bug**: First request works, second request fails with "BackendAlreadyInitialized"
-/// **Root Cause**: llama.cpp backend was initialized on every model load
-/// **Fix**: Use global OnceLock singleton to initialize backend once per process
-/// **This test**: Verifies the backend singleton pattern is implemented correctly
-
-#[cfg(feature = "llama")]
-#[test]
-fn test_issue_128_backend_singleton_exists() {
-    // This test verifies that the backend singleton pattern is in place
-    // The actual fix prevents BackendAlreadyInitialized by using OnceLock
-    
-    // We can't easily test the actual behavior without a real model file,
-    // but we can verify the code compiles and the pattern is correct
-    
-    // If this test compiles and runs, the fix is in place:
-    // - OnceLock<Result<LlamaBackend, String>> is defined
-    // - get_or_init_backend() uses get_or_init() not get_or_try_init()
-    // - Multiple calls to load() won't re-initialize the backend
-    
-    assert!(true, "Backend singleton pattern is implemented");
-}
-
-#[cfg(not(feature = "llama"))]
-#[test]
-fn test_issue_128_requires_llama_feature() {
-    // This test requires the llama feature to be enabled
-    // Run with: cargo test --features llama
-}
+/// Regression test for Issue #128: BackendAlreadyInitialized error on second request
+///
+/// GitHub: https://github.com/Michael-A-Kuykendall/shimmy/issues/128
+///
+/// **Bug**: First request works, second request fails with "BackendAlreadyInitialized"
+/// **Root Cause**: llama.cpp backend was initialized on every model load
+/// **Fix**: Use global OnceLock singleton to initialize backend once per process
+/// **This test**: Verifies the backend singleton pattern is implemented correctly
+
+#[cfg(feature = "llama")]
+#[test]
+fn test_issue_128_backend_singleton_exists() {
+    // This test verifies that the backend singleton pattern is in place
+    // The actual fix prevents BackendAlreadyInitialized by using OnceLock
+
+    // We can't easily test the actual behavior without a real model file,
+    // but we can verify the code compiles and the pattern is correct
+
+    // If this test compiles and runs, the fix is in place:
+    // - OnceLock<Result<LlamaBackend, String>> is defined
+    // - get_or_init_backend() uses get_or_init() not get_or_try_init()
+    // - Multiple calls to load() won't re-initialize the backend
+
+    assert!(true, "Backend singleton pattern is implemented");
+}
+
+#[cfg(not(feature = "llama"))]
+#[test]
+fn test_issue_128_requires_llama_feature() {
+    // This test requires the llama feature to be enabled
+    // Run with: cargo test --features llama
+}