Serve the page uncached with versioned assets so embeds pick up new builds

app/main.py

@@ -264,9 +264,21 @@ from curate_api import router as curate_router  # noqa: E402  (imports make_endp
 app.include_router(curate_router)
 
 
+def _asset_version() -> str:
+    import hashlib
+    h = hashlib.sha1()
+    for f in ("app.js", "curate.js", "app.css"):
+        h.update((STATIC / f).read_bytes())
+    return h.hexdigest()[:10]
+
+
+INDEX_HTML = (STATIC / "index.html").read_text().replace(".js\"", f".js?v={_asset_version()}\"").replace(".css\"", f".css?v={_asset_version()}\"")
+
+
 @app.get("/")
 def index():
-    return FileResponse(STATIC / "index.html")
+    # never cache the page itself (embeds kept showing an old build); assets carry a content hash instead
+    return Response(INDEX_HTML, media_type="text/html", headers={"Cache-Control": "no-cache"})
 
 
 app.mount("/static", StaticFiles(directory=STATIC), name="static")