This file orients Cursor agents at the start of a **new chat**. Project conventions live in **`.cursor/rules/`** (auto-loaded). Workflow playbooks live in **`.cursor/skills/`**.
**Organization types:** `CLINIC` (patients, appointments, treatment) and `LAB` (cases, tasks). Many features are org-type-specific. Permissions use `TAB_*_READ` / `TAB_*_EDIT` codes — see `backend/src/common/permissions.ts`.
## Before you code
1.**Read applicable rules** in `.cursor/rules/` (especially `dyolink-overview` and the file-scoped rule for the area you touch).
2.**Match existing patterns** in the nearest feature folder — do not invent parallel structures.
3.**Keep diffs small** — one concern per change unless the user asks for a refactor.
4.**Verify:**`npm run build` (backend) and `npx tsc --noEmit` (frontend) when you change types or cross-cutting code.
**Treatment tab:** Preview and editable form are **separate** until the user clicks **Load into workspace** on a history item. See `.cursor/skills/treatment-workspace/SKILL.md` before changing that flow.
- Day/mode gate: editable only for live draft on today/future (`canEditTreatmentForDay`). Past day / historical load → read-only form.
- Sent-to-lab detail locks that line; **Add detail** still OK same day; **Remove detail** = trash icon on each detail chip (not in the wizard Content step) — only unsent and not the last line. Attachment upload blocked when sent (`TREATMENT_DETAIL_SENT`).
- **Entry wizard:** `WizardStepper` — Teeth → Content → Lab; Lab step only when active detail type is lab-dependent (prosthesis). Detail chips ≠ wizard chrome (chips stay bordered tabs; stepper is numbered rail).
- **Tooth selection:** Shift+click same-arch range = connected group (linked dots); Ctrl/⌘+click same range = individual singles (one lab row each); plain click on a connected tooth collapses the whole span to that single tooth (no peel). Helpers: `toothSelectionGroups.ts`. Connected label: `ConnectedSelectionBadge` (shared `Badge` + primary tint).
- Lab-dependent details (e.g. prosthesis) **without teeth** can save but **cannot ship** — show `LabShipmentBlockedNotice` + inline banner; toast on dispatch add.
- **History filters** are client-side only (`treatmentHistoryFilters.ts`): “Not shipped to lab” + single date on already-fetched patient history; includes live current draft when filtering.
- **Lab shipments rail**: unified list with scope toggle **This patient** vs **All updates** (unread across org for **this clinician's cases only**, includes patient name).
- **Unread semantics**: Treatment tab badge = count of unread cases **for the user's own treatment plans** (per-case read cursor) and clears when a case is opened/marked read (not on tab visit).
- **Lab shipment progress + comments**: shown in **Lab dispatch panel** for the active shipment; expanding activity / opening comments marks that case read.
**Appointments (quick ref):** Do not delete (or change patient) when `hasTreatment`; codes `APPOINTMENT_HAS_TREATMENT` / `APPOINTMENT_PATIENT_LOCKED`. Past days: no new bookings; edit/delete OK without treatment; with treatment → toast. Appointment delete does not cascade-delete treatments. See `.cursor/rules/appointments.mdc`.
**Lab Tasks tab:** Newest case first; steps ordered 1→N; case grouping when sorted by date; `stepCompleted` filter; prosthesis colors from catalog; task assignment in **Cases** (compact row: status + assignee + last update); on **Tasks**, all staff see every task but only assignee (or unassigned pool) can change status — others see “Assigned to {name}” instead of the status dropdown; **case due dates** set/edited in clinic Treatment lab dispatch, shown on lab Cases/Tasks with overdue filter + sort; **mobile:** larger task status controls, sticky case header when grouped; **tab badges:**`LabCaseActivity` + `GET /notifications/tab-counts` (lab Cases/Tasks split, clinic Treatment) — see `.cursor/skills/lab-tasks/SKILL.md` and `.cursor/skills/lab-notifications/SKILL.md`.
**Lab Cases tab:** Filter by **prosthesis type** (not treatment type); auto-select newest case on open; list cards use `LabCaseProsthesisGroupsList` (colored type + teeth, shared with Treatment rail). Deep link: `?caseId=`, `?clinicOrganizationId=`. **Share link:** QR + URL on sent cases (attachment left, QR right); opens `/lab-case/[token]` focus page. See `.cursor/skills/lab-cases/SKILL.md` and `.cursor/skills/lab-case-share-link/SKILL.md`.
**Lab case share link (quick ref):**
- Token on first ship → `/{locale}/lab-case/{token}` after login.
**Today dashboard:** KPIs + charts per org type/permissions; deep links via `today-deep-links.ts` (Tasks KPIs/charts, Staff highlight, case partners). See `.cursor/skills/today-dashboard/SKILL.md`.
Use subagents to **save context**, not to avoid work:
| Type | Use for |
|------|---------|
| `explore` | Broad codebase search, unfamiliar areas |
| `shell` | Git, npm, long command sequences |
| `generalPurpose` | Multi-step research when parent context is large |
Do **not** delegate the user's main task to a subagent and return its summary — implement in the parent unless the user asked for exploration only.
## Improving this setup
When you and the user agree on a new convention, **add or update a rule** in `.cursor/rules/` (keep each rule under ~50 lines, one topic). For multi-step workflows, extend `.cursor/skills/`.
**To save a convention mid-task**, say: *"Remember this"* or *"Add to project rules"* — the agent uses the `capture-convention` skill and updates the repo (commit with your code).
| You say | Agent does |
|---------|------------|
| "Remember this: …" | Updates the right `.mdc` rule or skill |
| "Add a skill for …" | Creates `.cursor/skills/{name}/SKILL.md` |
| "This rule is wrong" | Edits the rule file; you commit |
Rules/skills **load automatically** in new chats; they do **not** update themselves unless you ask.
