refactor: Support both CSV and list formats for enabled_mcp_servers

src/config/app_config.rs

@@ -44,7 +44,8 @@ pub struct AppConfig {
 
     pub mcp_server_support: bool,
     pub mapping_mcp_servers: IndexMap<String, String>,
-    pub enabled_mcp_servers: Option<String>,
+    #[serde(default, deserialize_with = "super::deserialize_csv_or_vec")]
+    pub enabled_mcp_servers: Option<Vec<String>>,
 
     pub auto_continue: bool,
     pub max_auto_continues: usize,
@@ -413,7 +414,7 @@ impl AppConfig {
             self.mapping_mcp_servers = v;
         }
         if let Some(v) = super::read_env_value::<String>(&get_env_name("enabled_mcp_servers")) {
-            self.enabled_mcp_servers = v;
+            self.enabled_mcp_servers = v.map(|raw| super::csv_to_vec(&raw));
         }
 
         if let Some(v) = super::read_env_value::<String>(&get_env_name("repl_prelude")) {
@@ -520,7 +521,7 @@ impl AppConfig {
     }
 
     #[allow(dead_code)]
-    pub fn set_enabled_mcp_servers_default(&mut self, value: Option<String>) {
+    pub fn set_enabled_mcp_servers_default(&mut self, value: Option<Vec<String>>) {
         self.enabled_mcp_servers = value;
     }