feat: obsolete medication archiving, start date, and UI improvements (#215)

* feat: obsolete medication archiving, start date, and UI improvements

- Add soft-archive (obsolete) for medications with dedicated section and toggle
- Add medication start date field with date picker and validation
- Add obsolete/reactivate API endpoints with proper auth
- Filter obsolete meds from schedule, coverage, planner, and notifications
- Improve UserFilterModal with intake schedules, stock badges, and click-to-open
- Improve dashboard taken-by badges with per-intake bell icons
- Add Escape key support to ConfirmModal and MobileEditModal
- Fix Lightbox close button positioning near image
- Add read-only mode support for MobileEditModal
- DB migrations: 0008 (is_obsolete, obsolete_at), 0009 (medication_start_date)
- All user-facing text uses i18n keys (en + de)

* test: fix tests for obsolete medications and UI changes

- Backend: add is_obsolete, obsolete_at, medication_start_date columns to test schemas
- Backend: add test medication inserts in planner tests for active-med filtering
- Frontend: update useMedications URL to include includeObsolete param
- Frontend: fix MobileEditModal selectors and validation assertions
- Frontend: add onClearUser prop to UserFilterModal test renders
- Frontend: fix MedicationsPage and DashboardPage test assertions

backend/src/test/integration.test.ts

@@ -94,6 +94,9 @@ async function createSchema(client: Client) {
 		    expiry_date text,
 		    notes text,
 		    intake_reminders_enabled integer NOT NULL DEFAULT 0,
+		    medication_start_date text NOT NULL DEFAULT '',
+		    is_obsolete integer NOT NULL DEFAULT 0,
+		    obsolete_at integer,
 		    prescription_enabled integer NOT NULL DEFAULT 0,
 		    prescription_authorized_refills integer,
 		    prescription_remaining_refills integer,