Closes#3447.
- Shell.css: .shell-header and .shell-nav wrap onto a second line
below a breakpoint instead of forcing horizontal overflow — no
hamburger/collapse menu, per mara's own 'don't break, don't
over-invest' scoping.
- LinksMenu.css: bumped .links-menu-button and .links-menu-item to the
same 2.75em (~44px, WCAG 2.5.5) touch-target floor the shared ui/
kit's form controls and buttons already carry — this trigger is
bespoke, not built from that kit, but the floor applies regardless.
- Table.tsx/.css: wrapped the table in a .ui-table-scroll container
(overflow-x: auto) so a wide table scrolls within its own box on a
narrow viewport instead of forcing the whole page to overflow
horizontally — not named in the issue's two concrete spots, but the
same 'should not break' failure mode, and fixing it at the shared
Table primitive covers every future caller.
.create-agent-input's fixed width -> max-width was already fixed as
part of #3448's form kit.
Verified: tsc clean, build succeeds, screenshotted at 320px (hives
nav wraps, table scrolls internally, page itself doesn't overflow)
and 480px (create-agent form fields fit).
7c15cd46d2