feat: update config system and list format structure

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

src/main.rs

@@ -51,30 +51,16 @@ fn main() -> Result<(), Error> {
 
     debug!("MAIN: Start");
 
-    // Load configuration with priority: CLI args > env vars > config file > defaults
-    let config_path = if let Some(config_path) = &args.options.config {
-        config_path.clone()
-    } else if let Ok(env_config) = std::env::var("KEEP_CONFIG") {
-        PathBuf::from(env_config)
-    } else {
-        Config::default_config_path().unwrap_or_else(|_| PathBuf::from("~/.config/keep/config.yml"))
-    };
-
-    let mut config = Config::from_file(&config_path).unwrap_or_else(|e| {
-        debug!("CONFIG: Failed to load config: {}, using defaults", e);
-        Config::default()
-    });
-
-    debug!("MAIN: Loaded config: {:?}", config);
-
     // Determine default data directory
     let default_dir = match proj_dirs {
         Some(ref proj_dirs) => proj_dirs.data_dir().to_path_buf(),
         None => return Err(anyhow!("Unable to determine data directory")),
     };
 
-    // Create unified settings
-    let settings = Settings::from_config_and_args(&config, &args, default_dir)?;
+    // Create unified settings using the new config system
+    let settings = Settings::new(&args, default_dir)?;
+    
+    debug!("MAIN: Loaded settings: {:?}", settings);
 
     let ids = &mut Vec::new();
     let tags = &mut Vec::new();