- Discovery section headers merged the "See all <section>" button into the title row's semantics node, so screen readers and UI tests could not target the button (taps resolved to the row's dead center). Give the button its own semantics boundary (container: true). - The admin panel's back arrow IconButton had no label; add tooltip 'Back'. Also document why the panel cannot intercept system back (CreatePostScreen keeps an always-alive PopScope in the shell's IndexedStack that turns every system back press into a switch to the Home tab). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>