fix(ui): collapse global sidebar to a drawer below 992px (tablet layout overflow)

At tablet widths (~768px) the fixed ~300px global sidebar stayed pinned, leaving
too little room for content: the settings tables (Members etc.) overflowed the
offset content area and pushed the Role/actions columns off-screen with no
horizontal scroll (unreachable). Raise the AppShell navbar (and page aside)
breakpoint from `sm` (768px) to `md` (992px) so the whole tablet band uses the
toggle drawer (closed by default) and content gets the full width.

Verified with Playwright screenshots: 768px settings/members now fits all columns
(table right 736<768, no overflow); desktop (>=992px) unchanged (sidebar pinned,
content offset); mobile unchanged.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/client/src/components/layouts/global/global-app-shell.tsx

@@ -88,7 +88,13 @@ export default function GlobalAppShell({
       header={{ height: 45 }}
       navbar={{
         width: isSpaceRoute ? sidebarWidth : 300,
-        breakpoint: "sm",
+        // `md` (not `sm`): below 992px the fixed ~300px sidebar leaves too little
+        // room for content — the settings tables (Members/…) overflow the offset
+        // content area on tablet (~768px) and clip the Role/actions columns
+        // off-screen with no horizontal scroll. Collapsing the navbar to a toggle
+        // drawer across the whole tablet band frees the full width for content
+        // (the mobile drawer is closed by default, so nothing overlaps on load).
+        breakpoint: "md",
         collapsed: {
           mobile: !mobileOpened,
           desktop: !desktopOpened,
@@ -97,7 +103,7 @@ export default function GlobalAppShell({
       aside={
         isPageRoute && {
           width: 420,
-          breakpoint: "sm",
+          breakpoint: "md",
           collapsed: { mobile: !isAsideOpen, desktop: !isAsideOpen },
         }
       }