CSP fix: explicit script-src unsafe-eval + allow HF iframe (backend/middleware/security.py)

backend/middleware/security.py

@@ -229,9 +229,10 @@ class SecurityHeadersMiddleware(BaseHTTPMiddleware):
         response.headers["X-XSS-Protection"] = "1; mode=block"
         response.headers["Strict-Transport-Security"] = "max-age=31536000; includeSubDomains"
         response.headers["Referrer-Policy"] = "strict-origin-when-cross-origin"
+        # Keep explicit script-src + unsafe-eval (browser CSP reports flag missing script-src)
         response.headers["Content-Security-Policy"] = (
             "default-src 'self'; "
-            "script-src 'self' 'unsafe-inline' 'unsafe-eval'; "
+            "script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.jsdelivr.net blob:; "
             "style-src 'self' 'unsafe-inline'; "
             "img-src 'self' data: https:; "
             "font-src 'self' data:; "