refactor: make unused fields and functions private

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

src/args.rs

@@ -174,8 +174,8 @@ impl FromStr for NumberOrString {
  */
 #[derive(Debug, Clone)]
 pub struct KeyValue {
-    pub key: String,
-    pub value: String,
+    pub(crate) key: String,
+    pub(crate) value: String,
 }
 
 impl FromStr for KeyValue {

src/config.rs

@@ -37,7 +37,7 @@ pub struct Settings {
     pub list_format: Vec<ColumnConfig>,
     pub human_readable: bool,
     pub output_format: Option<String>,
-    pub(crate) verbose: u8,
+    pub verbose: u8,
     pub quiet: bool,
     pub force: bool,
     pub server: Option<ServerConfig>,

src/modes/server/common.rs

@@ -28,8 +28,8 @@ pub struct ServerConfig {
 pub struct AppState {
     pub db: Arc<Mutex<rusqlite::Connection>>,
     pub data_dir: PathBuf,
-    pub password: Option<String>,
-    pub password_hash: Option<String>,
+    pub(crate) password: Option<String>,
+    pub(crate) password_hash: Option<String>,
 }
 
 #[derive(Serialize, Deserialize, ToSchema)]