feat: graph browser

backend/main.py

@@ -28,7 +28,16 @@ async def health():
     return {"status": "ok"}
 
 
-# Serve built frontend as static files (SPA fallback)
+# Serve built frontend as static files with SPA fallback
 static_dir = Path(__file__).parent / "static"
 if static_dir.is_dir():
-    app.mount("/", StaticFiles(directory=str(static_dir), html=True), name="static")
+    from fastapi.responses import FileResponse
+
+    app.mount("/assets", StaticFiles(directory=str(static_dir / "assets")), name="assets")
+
+    @app.get("/{path:path}")
+    async def spa_fallback(path: str):
+        file = static_dir / path
+        if file.is_file():
+            return FileResponse(file)
+        return FileResponse(static_dir / "index.html")