fix: Correct module paths and conditional compilation for magic feature

Co-authored-by: aider (openai/andrew/openrouter/sonoma-sky-alpha) <aider@aider.chat>

src/modes/diff.rs

@@ -171,6 +171,7 @@ fn spawn_writer_thread(
     compression_type: crate::compression_engine::CompressionType,
     fd_write: libc::c_int,
 ) -> std::thread::JoinHandle<Result<(), anyhow::Error>> {
+    #[allow(unsafe_code)]
     let pipe_writer_raw = unsafe { std::fs::File::from_raw_fd(fd_write) };
     std::thread::spawn(move || {
         write_item_to_pipe(item_path, compression_type, pipe_writer_raw)

src/modes/generate_config.rs

@@ -64,7 +64,8 @@ pub fn mode_generate_config(_cmd: &mut Command, _settings: &crate::config::Setti
     let cwd_plugin = crate::meta_plugin::cwd::CwdMetaPlugin::new(None, None);
     let digest_plugin = crate::meta_plugin::digest::DigestMetaPlugin::new(None, None);
     let hostname_plugin = crate::meta_plugin::hostname::HostnameMetaPlugin::new(None, None);
-    let magic_file_plugin = crate::meta_plugin::magic::MagicFileMetaPlugin::new(None, None);
+    #[cfg(feature = "magic")]
+    let magic_file_plugin = crate::meta_plugin::magic_file::MagicFileMetaPlugin::new(None, None);
     let env_plugin = crate::meta_plugin::env::EnvMetaPlugin::new(None, None);
     
     // Create a default configuration
@@ -141,6 +142,7 @@ pub fn mode_generate_config(_cmd: &mut Command, _settings: &crate::config::Setti
                 options: hostname_plugin.options().clone(),
                 outputs: convert_outputs_to_string_map(hostname_plugin.outputs()),
             },
+            #[cfg(feature = "magic")]
             MetaPluginConfig {
                 name: "magic_file".to_string(),
                 options: magic_file_plugin.options().clone(),