refactor: remove dead code and #[allow(dead_code)] annotations

Removed unused sync podman_command/docker_command methods.
Removed dead_code annotations from User and AuthManager (now actively used).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

core/archipelago/src/auth.rs

@@ -67,7 +67,6 @@ struct OnboardingState {
     complete: bool,
 }
 
-#[allow(dead_code)]
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct User {
     pub password_hash: String,
@@ -80,12 +79,10 @@ pub struct User {
     pub role: UserRole,
 }
 
-#[allow(dead_code)]
 pub struct AuthManager {
     data_dir: PathBuf,
 }
 
-#[allow(dead_code)]
 impl AuthManager {
     pub fn new(data_dir: PathBuf) -> Self {
         Self { data_dir }

core/container/src/podman_client.rs

@@ -66,18 +66,6 @@ impl PodmanClient {
         }
     }
     
-    #[allow(dead_code)]
-    fn podman_command(&self) -> Command {
-        let mut cmd = Command::new("podman");
-        if self.rootless {
-            // Use actual HOME environment variable instead of hardcoded /home
-            if let Ok(home) = std::env::var("HOME") {
-                cmd.env("HOME", home);
-            }
-        }
-        cmd
-    }
-    
     fn podman_async(&self) -> TokioCommand {
         // Always use sudo podman to access system-wide containers
         let mut cmd = TokioCommand::new("sudo");

core/container/src/runtime.rs

@@ -99,15 +99,6 @@ impl DockerRuntime {
         cmd
     }
 
-    #[allow(dead_code)]
-    fn docker_command(&self) -> Command {
-        let mut cmd = Command::new("docker");
-        // Use actual HOME environment variable instead of hardcoded /home
-        if let Ok(home) = std::env::var("HOME") {
-            cmd.env("HOME", home);
-        }
-        cmd
-    }
 }
 
 #[async_trait]