added update_rule for incremental change

src/config.rs

@@ -21,21 +21,12 @@ pub struct Config {
     /// If set to "true", enables automatic VPN rotation between sessions
     #[serde(default)]
     pub enable_vpn_rotation: bool,
-
-    /// Number of tasks per session before rotating VPN
-    /// If set to 0, rotates VPN between economic and corporate phases
-    #[serde(default = "default_tasks_per_session")]
-    pub tasks_per_vpn_session: usize,
 }
 
 fn default_max_parallel_instances() -> usize {
     10
 }
 
-fn default_tasks_per_session() -> usize {
-    0 // 0 = rotate between economic/corporate
-}
-
 impl Default for Config {
     fn default() -> Self {
         Self {
@@ -45,7 +36,6 @@ impl Default for Config {
             max_parallel_instances: default_max_parallel_instances(),
             max_tasks_per_instance: 0,
             enable_vpn_rotation: false,
-            tasks_per_vpn_session: default_tasks_per_session(),
         }
     }
 }
@@ -93,11 +83,6 @@ impl Config {
             .parse::<bool>()
             .context("Failed to parse ENABLE_VPN_ROTATION as bool")?;
 
-        let tasks_per_vpn_session: usize = dotenvy::var("TASKS_PER_VPN_SESSION")
-            .unwrap_or_else(|_| "0".to_string())
-            .parse()
-            .context("Failed to parse TASKS_PER_VPN_SESSION as usize")?;
-
         Ok(Self {
             economic_start_date,
             corporate_start_date,
@@ -105,7 +90,6 @@ impl Config {
             max_parallel_instances,
             max_tasks_per_instance,
             enable_vpn_rotation,
-            tasks_per_vpn_session,
         })
     }