Reliability and privacy update. • Adding PDFs no longer freezes the app while it works, and the progress bar actually moves. • Chat: new conversations start fresh (earlier chats no longer bleed into new ones), long conversations stay coherent, and switching tabs or rotating the device no longer loses the answer you were waiting for. • Knowledge bases: a damaged knowledge base is now shown with a Repair option instead of disappearing, and your settings and chat history survive app updates. • Web search (Chat mode) is off by default, sends only your query, and no longer keeps cookies. Search results are attributed to the right source. • Model manager: the Downloaded Models list is back so you can free up space, custom model sizes are detected correctly, and no more false "Model Too Large" warnings after a cancelled download. • Readable in Light mode, larger tap targets, Dynamic Type in chat, and a smaller download