Fix LED color events and improve screenshot capture

- Fix LED color publisher: uncomment display_colors_tx.send() to enable LED color events
- Replace rust_swift_screencapture with screen-capture-kit for better macOS compatibility
- Add bounds checking in LED color processing to prevent array index errors
- Update screenshot manager to use CGDisplay as fallback implementation
- Fix frontend screenshot URL protocol to use ambient-light://
- Add debug logging for LED color events in frontend
- Remove debug logs that were added for troubleshooting
- Update dependencies and remove CMake-dependent paho-mqtt temporarily

This resolves the issue where LED color events were not being sent to the frontend,
enabling real-time LED color visualization in the UI.

src-tauri/src/main.rs

@@ -269,7 +269,7 @@ async fn main() {
 
             let url = url.unwrap();
 
-            let re = regex::Regex::new(r"^/displays/(\d+)$").unwrap();
+            let re = regex::Regex::new(r"^/(\d+)$").unwrap();
             let path = url.path;
             let captures = re.captures(path.as_str());
 
@@ -287,6 +287,7 @@ async fn main() {
 
             let bytes = tokio::task::block_in_place(move || {
                 tauri::async_runtime::block_on(async move {
+
                     let screenshot_manager = ScreenshotManager::global().await;
                     let rx: Result<tokio::sync::watch::Receiver<Screenshot>, anyhow::Error> =
                         screenshot_manager.subscribe_by_display_id(display_id).await;
@@ -305,7 +306,7 @@ async fn main() {
                         anyhow::bail!("Display#{}: no screenshot.", display_id);
                     }
 
-                    log::debug!("Display#{}: screenshot size: {}", display_id, bytes.len());
+
 
                     let (scale_factor_x, scale_factor_y, width, height) = if url.query.is_some()
                         && url.query.as_ref().unwrap().contains_key("height")
@@ -368,6 +369,7 @@ async fn main() {
                         }
                     }
 
+
                     Ok(rgba_buffer.clone())
                 })
             });