fix: resolve compilation errors in tests by fixing type mismatches and imports

Co-authored-by: aider (openai/andrew/openrouter/anthropic/claude-sonnet-4) <aider@aider.chat>

src/tests/meta_plugin/program_tests.rs

@@ -6,8 +6,8 @@ mod tests {
     #[test]
     fn test_meta_plugin_program_creation() {
         let plugin = MetaPluginProgram::new(
-            "echo".to_string(),
-            vec!["test".to_string()],
+            "echo",
+            vec!["test"],
             "test_plugin".to_string(),
             false,
         );
@@ -20,8 +20,8 @@ mod tests {
     #[test]
     fn test_meta_plugin_program_create_writer() {
         let plugin = MetaPluginProgram::new(
-            "cat".to_string(),
-            vec![].to_vec(),
+            "cat",
+            vec![],
             "cat_plugin".to_string(),
             false,
         );
@@ -36,8 +36,8 @@ mod tests {
     #[test]
     fn test_meta_plugin_program_unsupported() {
         let plugin = MetaPluginProgram::new(
-            "nonexistent_program_xyz".to_string(),
-            vec![].to_vec(),
+            "nonexistent_program_xyz",
+            vec![],
             "bad_plugin".to_string(),
             false,
         );