* feat(projects): scheduled-only Gantt data source + WS reactivity (MUL-1881)
Project Gantt now fetches its own scheduled-only data instead of riding the
Board/List pagination cache. The Unscheduled drawer and pagination warning
banner are gone, and any WS-driven issue change (create / update / delete)
invalidates the new cache so the timeline stays live.
- Backend: `GET /api/issues?scheduled=true` adds an
`(i.start_date IS NOT NULL OR i.due_date IS NOT NULL)` predicate on both
ListIssues and CountIssues. New SQL filter is plumbed through sqlc + handler.
- Frontend: new `projectGanttIssuesOptions(wsId, projectId)` issues a single
fetch and lives under its own cache key. WS handlers and mutations
invalidate the prefix on create/update/delete so the bar reacts to
start_date / due_date changes from other tabs and from this tab without
waiting on the WS round-trip.
- GanttView: drops the Unscheduled section, the pagination warning banner,
and the load-all button; renders only scheduled rows.
- Removes now-dead `useLoadAllRemaining`, `myIssueListPaginationOptions`,
`summarizeIssueListPagination`, and the gantt locale strings that
supported the old plumbing.
Co-authored-by: multica-agent <github@multica.ai>
* fix(projects): page through Gantt fetch and isolate per-view data sources
- Walk paginated `scheduled=true` issues until total is reached so projects
with more than 500 scheduled bars no longer silently truncate.
- Gantt mode disables the bucketed Board/List query and reads its own
scheduled cache for the project empty-state check, so the page never
short-circuits Gantt with a Board-derived "no issues" CTA.
- `onIssueLabelsChanged` patches matching rows in the Project Gantt cache
in-place, keeping label filters consistent after attach/detach from
other tabs or agents.
MUL-1881
Co-authored-by: multica-agent <github@multica.ai>
---------
Co-authored-by: multica-agent <github@multica.ai>