step: [#220] create tracker DTO module structure

Author: josecelano

src/application/command_handlers/create/config/mod.rs

@@ -132,6 +132,7 @@ pub mod environment_config;
 pub mod errors;
 pub mod provider;
 pub mod ssh_credentials_config;
+pub mod tracker;
 
 // Re-export commonly used types for convenience
 pub use environment_config::{EnvironmentCreationConfig, EnvironmentSection};

src/application/command_handlers/create/config/tracker/mod.rs

@@ -0,0 +1,5 @@
+//! Tracker Configuration DTOs (Application Layer)
+//!
+//! This module contains DTO types for tracker configuration used in
+//! environment creation. These types use raw primitives (String) for
+//! JSON deserialization and convert to rich domain types (`SocketAddr`).

src/application/command_handlers/test/handler.rs

@@ -162,7 +162,7 @@ impl TestCommandHandler {
         Ok(())
     }
 
-    /// Extract port number from bind_address string (e.g., "0.0.0.0:1212" -> Some(1212))
+    /// Extract port number from `bind_address` string (e.g., "0.0.0.0:1212" -> Some(1212))
     fn extract_port_from_bind_address(bind_address: &str) -> Option<u16> {
         bind_address
             .split(':')