Closes#3183.
Tabs render under `<Activity mode="visible|hidden">`, which keeps React
state but drops DOM scrollTop when the subtree leaves layout. Switching
to another tab and back sent users to the top of long discussions.
`useTabScrollRestore` records the scrollTop of every element marked with
`data-tab-scroll-root` while the tab is visible (capture-phase scroll
listener) and restores them in a useLayoutEffect on the next visible
transition, before paint. Saved offsets are dropped when the tab's path
changes so intra-tab navigation lands at scroll=0 instead of inheriting
the previous route's position.
Mark scroll containers in views with `data-tab-scroll-root` (issue
detail + chat message list ship with the marker; other views can adopt
the convention as needed).
`useAutoScroll` previously called `scrollToBottom()` on every effect
mount, which would have overwritten the restored offset every time a
chat tab cycled back to visible. Guard it with a once-per-instance ref.
Co-authored-by: multica-agent <github@multica.ai>
* feat(sidebar): top/bottom scroll fade mask (MUL-2150)
Apply useScrollFade to SidebarContent so the menu list softly fades
into the header / footer when overflowing, matching the existing
pattern used in chat list and onboarding steps.
Co-authored-by: multica-agent <github@multica.ai>
* fix(ui): useScrollFade re-evaluates on content mutations
ResizeObserver only fires on the observed element's own box. When a
flex / auto-height container's children grow asynchronously (sidebar
pinned items loading from TanStack Query, collapsibles expanding),
scrollHeight changes but clientHeight does not — mask stayed 'none'
until the user scrolled. Add a MutationObserver on childList to
recompute fade when content is inserted or removed.
Co-authored-by: multica-agent <github@multica.ai>
* test(paths): include squads in workspace route consistency check
main added the squads parameterless route to paths.workspace() in #2505
but the C4 consistency assertion wasn't updated, turning frontend CI
red on every PR. Add 'squads' to both the parameterless-method set and
the segment-mapping table.
Co-authored-by: multica-agent <github@multica.ai>
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Co-authored-by: multica-agent <github@multica.ai>
