refactor: remove manual Debug implementation for MetaPluginCommand

Co-authored-by: aider (openai/andrew/openrouter/deepseek/deepseek-chat-v3.1) <aider@aider.chat>

src/meta_plugin/command.rs

@@ -17,20 +17,6 @@ pub struct MetaPluginCommand {
     options: std::collections::HashMap<String, serde_yaml::Value>,
 }
 
-impl std::fmt::Debug for MetaPluginCommand {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        f.debug_struct("MetaPluginCommand")
-            .field("program", &self.program)
-            .field("args", &self.args)
-            .field("supported", &self.supported)
-            .field("split_whitespace", &self.split_whitespace)
-            .field("process", &self.process)
-            .field("writer", &"Box<dyn Write>")
-            .field("outputs", &self.outputs)
-            .field("options", &self.options)
-            .finish()
-    }
-}
 
 impl MetaPluginCommand {
     pub fn new(

src/services/error.rs

@@ -1,7 +1,6 @@
-use derive_more::From;
 use thiserror::Error;
 
-#[derive(Error, Debug, From)]
+#[derive(Error, Debug)]
 pub enum CoreError {
     #[error("Database error: {0}")]
     Database(#[from] rusqlite::Error),
@@ -17,6 +16,6 @@ pub enum CoreError {
     Compression(String),
     #[error(transparent)]
     Other(#[from] anyhow::Error),
-    #[from]
-    Migration(#[error(ignore)] rusqlite_migration::Error),
+    #[error("Migration error: {0}")]
+    Migration(#[from] rusqlite_migration::Error),
 }