sqlite_wasm: fix database path

Signed-off-by: Jos Verlinde <Jos_Verlinde@hotmail.com>

Author: Josverl

tools/board_compare/frontend/sqlite_wasm.py

@@ -183,7 +183,9 @@ async def open_database_url(self, url: str) -> SQLDatabase:
 
         # Convert filename to URL (assume local server)
         if not url.startswith("http"):
-            # Use the current page's base URL
+            # Use the current page's base URL and preserve the path
+            base_url = str(js.window.location.href).rsplit('/', 1)[0]
+            url = f"{base_url}/{url}"
             base_url = str(js.window.location.origin)
             url = f"{base_url}/{url}"