gui fixes

src/main.rs

@@ -25,21 +25,23 @@ use std::sync::Arc;
 use std::time::Instant;
 use tokio::sync::Mutex;
 
-#[tokio::main]
-async fn main() -> Result<()> {
+fn main() -> Result<()> {
     let args: Vec<String> = env::args().collect();
 
     if args.len() >= 2 && args[1].eq_ignore_ascii_case("pdf-import") {
-        return run_pdf_import(&args[2..]).await;
+        let rt = tokio::runtime::Runtime::new()?;
+        return rt.block_on(run_pdf_import(&args[2..]));
     }
     if args.len() >= 2 && args[1].eq_ignore_ascii_case("cli") {
-        return run_cli().await;
+        let rt = tokio::runtime::Runtime::new()?;
+        return rt.block_on(run_cli());
     }
 
     if args.iter().any(|a| a == "--browser") {
-        run_browser_mode().await
+        let rt = tokio::runtime::Runtime::new()?;
+        rt.block_on(run_browser_mode())
     } else {
-        run_gui_mode().await
+        run_gui_mode_main_thread()
     }
 }
 
@@ -116,28 +118,26 @@ async fn run_browser_mode() -> Result<()> {
     start_server(addr, state, true).await
 }
 
-async fn run_gui_mode() -> Result<()> {
-    let state = build_state().await?;
+fn run_gui_mode_main_thread() -> Result<()> {
+    let rt = tokio::runtime::Runtime::new()?;
+
+    let state = rt.block_on(build_state())?;
 
     // Start the web server in background (not blocking, no browser open)
     let addr = "127.0.0.1:3000";
     let server_state = state.clone();
-    let server_handle = tokio::spawn(async move {
+    let server_handle = rt.spawn(async move {
         if let Err(e) = start_server(addr, server_state, false).await {
             eprintln!("Server error: {e}");
         }
     });
 
     // Let the server start
-    tokio::time::sleep(std::time::Duration::from_millis(500)).await;
+    std::thread::sleep(std::time::Duration::from_millis(500));
 
-    // Run the egui GUI in a blocking task
+    // Run the egui GUI on the main thread (winit/eframe requires this)
     let http_url = "http://127.0.0.1:3001".to_string();
-    tokio::task::spawn_blocking(move || {
-        crate::gui::run_gui(&http_url);
-    })
-    .await
-    .ok();
+    crate::gui::run_gui(&http_url);
 
     server_handle.abort();
     Ok(())