Fix Neon Vortex button input and add Jellyfin WAL mode

- Comment out CORS headers in nginx.conf to fix button input blocking
- Add WAL enable job for Jellyfin to resolve database locking issues
- Include comprehensive troubleshooting documentation

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Co-Authored-By: Claude <noreply@anthropic.com>

htlm/nginx.conf

@@ -25,8 +25,11 @@ server {
     add_header X-XSS-Protection "1; mode=block" always;
 
     # CORS headers for web workers and WASM
-    add_header Cross-Origin-Embedder-Policy "require-corp" always;
-    add_header Cross-Origin-Opener-Policy "same-origin" always;
+    # ONLY NEEDED IF GODOT EXPORT USES THREADS MODE
+    # These headers can block input if export is "Regular" (non-threaded)
+    # Commenting out to fix button input issues
+    # add_header Cross-Origin-Embedder-Policy "require-corp" always;
+    # add_header Cross-Origin-Opener-Policy "same-origin" always;
 
     location / {
         try_files $uri $uri/ "/Neon Vortex.html";