Chatify 0.2.6

Answers use the full reading column on desktop instead of shrinking to their shortest line.

Composer footer no longer repeats itself: one sources-and-citations line, one disclaimer.

The no-evidence state is a small muted note with a small icon instead of a large heading.

Scroll-to-latest button no longer floats over the welcome screen; it only appears inside chats.

Repaired four more stale strict UI tests (answer undo, view routing, multi-topic cancel, icon targets) and the NewsNerd sample config.