improvement: some improvement done for appointment and treatment shared components.

.cursor/rules/appointments.mdc

@@ -9,4 +9,6 @@ alwaysApply: false
 - List includes `hasTreatment` when a `Treatment` row is linked (`appointmentId`).
 - **Patient change** blocked while linked → `APPOINTMENT_PATIENT_LOCKED` (UI: `patientLockedHint`).
 - **Delete** blocked while linked → `APPOINTMENT_HAS_TREATMENT` (hide delete + `deleteBlockedHint`). Empty appointments (no treatment yet) remain deletable.
+- **Past days:** new bookings stay blocked. Existing appointments **without** treatment can be edited/deleted; with treatment → toast `infoEditBlockedHasTreatment` (no modal). Banner clicks are not gated by `canBook` (slots still are).
+- **Disabled feedback:** use `title` + click `toast.showInfo` with `common.readOnlyAccess` (same key as Staff/Patients) or the domain reason (`infoPastViewOnly`, `infoEditBlockedHasTreatment`).
 - Prisma: `Treatment.appointmentId` is `onDelete: SetNull` — deleting an appointment does **not** cascade-delete treatments/cases/tasks; do not rely on cascade for cleanup.

.cursor/skills/i18n-formatting/SKILL.md

@@ -36,7 +36,7 @@ Use when adding or changing user-visible dates/times/numbers, RTL layout, or loc
 - `fa`: Jalali display `YYYY/MM/DD` (Persian digits), parse/mask in `persianCalendar.ts`
 - `en` / `nl`: Gregorian display `YYYY-MM-DD`, parse/mask in `dateInputFormat.ts`
 - Calendar icon at **`end-3`** (matches select chevron inset); text uses **`text-start`** (logical — right in RTL, left in LTR)
-- Popup: **`CalendarDayPartsPanel`** (shared with schedule picker)
+- Popup: **`CalendarDayPartsPanel`** (shared with schedule picker); positioned via `useAnchoredPanelPosition` (fixed + viewport clamp / flip) so RTL/LTR edge fields stay on-screen
 - **Do not** add native `<input type="date">` — one component for all locales
 
 **Select chevron**