feat(src/commands): add get_active_display_info and status display output

Add function to retrieve and display active monitor information, and expose it via status command.

New Features:
- Implement get_active_display_info returning formatted display strings.
- Extend status command to list active displays using the new function.

Enhancements:
- Improve console output for display information.
- Update dependency usage for cleaner code.

Bug Fixes:
- None

src/commands/display.rs

@@ -269,6 +269,30 @@ fn fetch_state() -> Option<(Connection, AppState, wayland_client::EventQueue<App
     Some((conn, state, event_queue))
 }
 
+pub fn get_active_display_info() -> Vec<String> {
+    let mut infos = Vec::new();
+    if let Some((_, state, _)) = fetch_state() {
+        for (_, head) in state.heads.iter() {
+            if !head.enabled {
+                continue;
+            }
+            let Some(current_mode_handle) = &head.current_mode else {
+                continue;
+            };
+            let Some((_, mode)) = state.modes.get(current_mode_handle) else {
+                continue;
+            };
+
+            let hz = (mode.refresh as f64) / 1000.0;
+            infos.push(format!(
+                "{} ({}): {}x{} px, {:.3} Hz",
+                head.name, head.make, mode.width, mode.height, hz
+            ));
+        }
+    }
+    infos
+}
+
 fn show_refresh_rates() {
     if let Some((_, state, _)) = fetch_state() {
         for (head_handle, head) in state.heads.iter() {

src/commands/status.rs

@@ -1,3 +1,4 @@
+use crate::commands::display;
 use crate::hardware::gpu;
 use std::fs;
 use std::path::Path;
@@ -179,4 +180,14 @@ pub fn execute() {
             }
         }
     }
+
+    // Display Status
+    let displays = display::get_active_display_info();
+    if displays.is_empty() {
+        println!("Display: Unknown / Firmware managed");
+    } else {
+        for d in displays {
+            println!("Display: {}", d);
+        }
+    }
 }