fix: restore KeepModes enum and fix unused imports

Co-authored-by: aider (openai/andrew/openrouter/qwen/qwen3-coder) <aider@aider.chat>

src/main.rs

@@ -27,7 +27,7 @@ extern crate serde_json;
 extern crate serde_yaml;
 extern crate serde;
 
-use args::{Args, KeyValue, NumberOrString, KeepModes};
+use args::{Args, NumberOrString};
 
 /**
  * Main function to handle command-line arguments and execute the appropriate mode.
@@ -62,6 +62,20 @@ fn main() -> Result<(), Error> {
     tags.sort();
     tags.dedup();
 
+    #[derive(PartialEq)]
+    enum KeepModes {
+        Unknown,
+        Save,
+        Get,
+        Diff,
+        List,
+        Delete,
+        Update,
+        Info,
+        Status,
+        Server,
+    }
+
     let mut mode: KeepModes = KeepModes::Unknown;
 
     if args.mode.save {
@@ -175,7 +189,7 @@ fn main() -> Result<(), Error> {
         KeepModes::Server => {
             crate::modes::server::mode_server(&mut cmd, &args, &mut conn, data_path)?
         }
-        _ => todo!(),
+        KeepModes::Unknown => todo!(),
     }
 
     Ok(())