Mobile Release 1.6.13 - Ask Other AIs, Pro Mode, and More

Mobile 1.6.13 release is out in the App Store and Google Play store!
New
Mention another AI with (@): in Chat with me, type (@) to pick an AI you follow. Its answer shows in its own bubble with "Ask other AIs" / "Ask follow up". The header shows every AI in the chat, and the attach menu's "Followed AI" row now opens the picker.
Pro Mode: a "You / Pro" picker in the composer. Pro sends your question to the best-matched expert AI and shows the answer with "Sourced from", Follow, "Ask someone else" and thumbs-down. If no expert matches, your own AI answers. Only shows for accounts the server has enabled.
Substack and Medium connectors in Knowledge, plus Instagram is back. Rows take a handle or a pasted link, and custom-domain Substacks work.
Improvements
Shorter signup process: the "How do you plan to use your AI?" step is gone and the LinkedIn step is off by default (matches web).
Faster avatar photo uploads: photos are resized to 2048px (about 1MB instead of 3–11MB).
"Build who U are" checklist shows up to 4 next steps; completed ones drop off (matches web).
The chat-header speaker icon is a loudspeaker again and still glows lime while the AI speaks.
• The XP meter in the composer shows just the bar and level, no numbers.
• Social account errors now show clear, translated messages (already importing, duplicate, out of credits, wrong page type, etc).
Fixes
Articles: Articles no longer get stuck on “Generating…”, and the next article now shows its card.
Chat and Connect: Recommended AI, service and thought cards now show profile pictures. Services no longer appear under Recent Chats, and AIs that went private drop out of Connect chats. Tapping one now says “This AI is no longer available.”
Social accounts: The last row is no longer hidden behind the navigation bar. A single post or video link no longer shows up as a connected account. Custom-domain Substacks no longer land under Website. Rows no longer get stuck on “Importing…” or show connections that don’t exist.
Voice settings: The keyboard now closes when the voice settings sheet opens.