fix install diogram

web/main.py

@@ -1,6 +1,30 @@
+import os
 import flet as ft
+import httpx
 import designer as ds
 from router import setup_router
+from starlette.applications import Starlette
+from starlette.routing import Route, Mount
+from starlette.responses import Response as StarletteResponse
+
+_API_URL = os.getenv("API_URL", "http://api:8000")
+
+
+async def _radar_image(request):
+    """Проксирует SVG-диаграмму с API — браузер скачивает с собственного хоста."""
+    response_id = request.path_params["response_id"]
+    try:
+        async with httpx.AsyncClient(timeout=10) as client:
+            r = await client.get(f"{_API_URL}/responses/{response_id}/radar/image")
+        if r.status_code == 200:
+            return StarletteResponse(
+                content=r.content,
+                media_type="image/svg+xml",
+                headers={"Content-Disposition": 'attachment; filename="diagram.svg"'},
+            )
+    except Exception:
+        pass
+    return StarletteResponse(status_code=404)
 
 
 async def main(page: ft.Page):
@@ -11,4 +35,11 @@ async def main(page: ft.Page):
     await page.push_route(initial)
 
 
-app = ft.run(main, export_asgi_app=True, assets_dir="assets")
+_flet_app = ft.run(main, export_asgi_app=True, assets_dir="assets")
+
+app = Starlette(
+    routes=[
+        Route("/radar-image/{response_id}", _radar_image),
+        Mount("/", _flet_app),
+    ]
+)