AI Limits 1.0.5

• Requests are retried over IPv4 when the default route fails (machines with AAAA records but no IPv6 gateway, e.g. behind some VPNs). Request timeout lowered from 30 s to 10 s. Contributed by @wormuz in #2.
• Not yet submitted to extensions.gnome.org; 1.0.3 is still in review there.