[server] only provide games that exist in games folder

crates/lanspread-server/src/main.rs

@@ -319,6 +319,17 @@ async fn main() -> eyre::Result<()> {
 
     let eti_games = eti::get_games(&cli.db).await?;
     let mut games: Vec<Game> = eti_games.into_iter().map(eti_game_to_game).collect();
+
+    // Filter games based on existing folders
+    games.retain(|game| {
+        let game_folder = cli.folder.join(&game.id);
+        let exists = game_folder.exists() && game_folder.is_dir();
+        if !exists {
+            tracing::debug!("Skipping game {}: folder not found", game.id);
+        }
+        exists
+    });
+
     let thumbnails = Thumbnails::new(cli.thumbnails);
 
     // add thumbnails to games