Improve Mesh Tab: Organize by contract with status filter (#5)

* Add status filter toggle to Mesh Tab TaskList component

Add a filter toggle at the top of the TaskList that allows filtering by
contract status (All, Active, Completed, Archive) with Active as the default.

Changes:
- Backend: Add contract_status field to TaskSummary struct in models.rs
- Backend: Update all SQL queries returning TaskSummary to include
  c.status as contract_status from the contracts table join
- Frontend: Add contractStatus to TaskSummary TypeScript type
- Frontend: Add useState for statusFilter with 'active' as default
- Frontend: Add filter button group in header area next to '+ New Task'
- Frontend: Update groupedTasks useMemo to filter based on contract status
- Frontend: Update empty state message to reflect current filter

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* Task completion checkpoint

* feat(mesh): show all contract tasks for supervisor tasks

When viewing a supervisor task (task.isSupervisor === true), the
TaskDetail component now shows all tasks in the contract instead
of showing the subtasks tree.

Changes:
- Add contractTasks prop to TaskDetailProps for passing contract tasks
- Add displayTasks computed value that uses contractTasks for supervisors
- Change section header from "Subtasks" to "Contract Tasks" for supervisors
- Hide the "+ Add Subtask" button for supervisor tasks
- Update empty state message for supervisors
- Fetch contract tasks in mesh.tsx when viewing a supervisor task
- Filter out the supervisor itself from the contract tasks list

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

* Task completion checkpoint

* Task completion checkpoint

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Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

0 files changed, 0 insertions, 0 deletions