---
name: dyolink-lab-tasks
description: Lab Tasks tab — list, sort, filters, case grouping, prosthesis colors, step-completed filter. Use when changing TasksPage, tasks API, or lab task list UX.
---

# Lab Tasks

Main UI: [`frontend/src/components/ui/lab/TasksPage.tsx`](frontend/src/components/ui/lab/TasksPage.tsx)  
Backend: [`backend/src/modules/tasks/`](backend/src/modules/tasks/)

## Default sort (backend)

`sortBy=date` + `sortDir=desc`:

1. `labCase.sentAt` desc (newest case first)
2. `labCaseId`, `treatmentDetailId`, `prosthesisTypeCode` asc (stable grouping)
3. `stepOrder` asc (steps 1→N within prosthesis group)
4. `id` asc

Other sorts use flat list on the frontend; `stepOrder asc` is still a tiebreaker.

## Case grouping (frontend)

- **`sortBy === 'date'`** → grouped view via [`taskListGrouping.ts`](frontend/src/components/lab/taskListGrouping.ts): case header → prosthesis sub-header → task rows.
- **Other sorts** → flat list; show muted hint (`groupingOff*` i18n keys). Each row keeps clinic/patient/teeth context.

Components: `TaskCaseGroupHeader`, `TaskProsthesisGroupHeader`, `TaskRow`.

## Prosthesis colors

- Map: [`catalog-type-colors.ts`](frontend/src/components/shared/catalog-type-colors.ts) → `PROSTHESIS_TYPE_COLORS` (one hex per catalog code).
- Resolve with [`prosthesisTypeDisplay.ts`](frontend/src/components/treatment/prosthesisTypeDisplay.ts) — use `prosthesisTypeBadgeStyleFromCatalog(code, catalog)`, **not** list row index.
- Load catalog via `prosthesisCatalogApi.list()` on Tasks/Cases/Today dashboard.

## Filters

| Param | API | UI |
|-------|-----|-----|
| `q`, `clinicOrganizationId`, `status` | `GET /tasks` | Search, clinic, status |
| `stepCompleted` | `GET /tasks` | Workflow step dropdown |
| Clinics + steps options | `GET /tasks/filter-options` | Populates dropdowns (not from current page) |

**Step completed filter:** Restricts to prosthesis groups `(labCaseId, treatmentDetailId, prosthesisTypeCode)` where that `workflowStepCode` task is `COMPLETED`. Combined with `status=IN_PROGRESS`, returns only in-progress tasks in those groups (completed step row hidden).

## APIs

- `GET /tasks` — paginated flat task list (grouping is client-side when `sortBy=date`)
- `PATCH /tasks/:taskId` — update status
- `GET /tasks/filter-options` — clinics + workflow steps (localized)

List items include `caseSentAt` for case headers.

## Permissions

`TAB_TASKS_READ` / `TAB_TASKS_EDIT`; `LabOrgGuard` on all task routes.