diff --git a/server/main.py b/server/main.py
index 777e11b..d95ebd9 100644
--- a/server/main.py
+++ b/server/main.py
@@ -146,26 +146,17 @@ def get_server_time():
 class DashboardStaticFiles(StaticFiles):
     """StaticFiles with explicit Cache-Control headers.
 
-    Starlette sends only ETag/Last-Modified, so every dashboard load
-    re-validates all ~9 assets with conditional requests. The HTML shell stays
-    no-cache (a deploy shows up on the next load); the JS/CSS assets get a
-    modest max-age so repeat loads within the hour skip the network entirely,
-    falling back to ETag re-validation once it expires.
+    Everything is no-cache: the browser keeps its copy but re-validates it
+    with the ETag on each load, so an unchanged file costs a 304 and a deploy
+    shows up on the next load. The asset URLs are not versioned, so a max-age
+    here kept serving the previous release's JS (e.g. a login page without the
+    SSO button) for up to an hour after an upgrade — longer behind a CDN.
     """
 
     async def get_response(self, path: str, scope):
         response = await super().get_response(path, scope)
         if response.status_code < 400:
-            # The HTML shell, the service worker and the manifest must revalidate
-            # every load so a deploy (or a changed SW) is picked up promptly; the
-            # hashed-in-practice JS/CSS assets get a modest max-age.
-            if (
-                path in ("", ".", "index.html", "sw.js", "manifest.webmanifest")
-                or path.endswith(".html")
-            ):
-                response.headers["Cache-Control"] = "no-cache"
-            else:
-                response.headers["Cache-Control"] = "public, max-age=3600"
+            response.headers["Cache-Control"] = "no-cache"
         return response
 
 
diff --git a/server/oidc.py b/server/oidc.py
index 4fbf45b..f68d929 100644
--- a/server/oidc.py
+++ b/server/oidc.py
@@ -48,6 +48,7 @@
     OIDC_REQUIRE_EMAIL_VERIFIED,
     OIDC_SCOPES,
     PUBLIC_BASE_URL,
+    SERVER_VERSION,
 )
 
 logger = logging.getLogger("hivescale.oidc")
@@ -124,9 +125,18 @@ def post_logout_redirect_uri(request: Request) -> str:
 # ── provider HTTP ────────────────────────────────────────────────────────────
 
 
+# urllib's default "Python-urllib/3.x" is blocked by Cloudflare's Browser
+# Integrity Check (error 1010) when the provider sits behind Cloudflare.
+_USER_AGENT = f"HiveHub/{SERVER_VERSION} (OpenID Connect client)"
+
+
 def _http_json(url: str, data: Optional[dict] = None, headers: Optional[dict] = None) -> dict:
     body = urllib.parse.urlencode(data).encode() if data is not None else None
-    req = urllib.request.Request(url, data=body, headers={"Accept": "application/json", **(headers or {})})
+    req = urllib.request.Request(
+        url,
+        data=body,
+        headers={"Accept": "application/json", "User-Agent": _USER_AGENT, **(headers or {})},
+    )
     try:
         with urllib.request.urlopen(req, timeout=OIDC_HTTP_TIMEOUT_SECONDS) as resp:
             return json.loads(resp.read().decode("utf-8"))