* fix(mobile): always mount SessionSidebar to eliminate >10s drawer open delay (#1695)
On mobile (Android PWA), SessionSidebar was conditionally mounted via
{mobileLeftDrawerVisible && ...}, causing the component to unmount on
drawer close and remount on every open. Each remount fired a full
data-loading cascade: paginated sessions fetch (PAGE_SIZE=500 with
retry), worktree discovery, repo status, PR status, 10+ useMemo
recomputations, and localStorage reads, manifesting as a >10s delay
before the drawer became interactive.
Desktop already avoided this by keeping SessionSidebar always mounted
inside <Sidebar> with a CSS visibility toggle.
Fix: remove the mobileLeftDrawerVisible conditional wrapper so
SessionSidebar stays mounted on mobile too, matching desktop behavior.
Visibility remains controlled by the leftDrawerX transform (off-screen
when closed). Added pointer-events-none when hidden as a defensive guard.
Added a regression test that fails if the conditional mount pattern is
reintroduced around the mobile SessionSidebar.
* fix(mobile): hide closed drawer to avoid rotation offset leak
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Co-authored-by: Bohdan Triapitsyn <artmore@protonmail.com>
