feat: Stock Correction Modal (#47)

* feat: add stock correction modal with blister-based input

- Add 'Correct Stock' button to medication detail modal
- New modal with Full Blisters + Partial Blister Pills inputs
- Auto-conversion for edge cases (full/negative partial)
- New stockAdjustment field for DB corrections without touching looseTablets
- New lastStockCorrectionAt timestamp to ignore old consumed doses after correction
- Tracking data preserved for future statistics
- Add Drizzle migrations for new columns
- Add translations for en/de

* fix: add stock_adjustment columns to e2e/integration test schemas

backend/src/routes/share.ts

@@ -113,7 +113,7 @@ export async function shareRoutes(app: FastifyInstance) {
       // Parse takenBy JSON array
       const takenByArray = parseTakenByJson(med.takenByJson);
 
-      const totalPills = med.packCount * med.blistersPerPack * med.pillsPerBlister + med.looseTablets;
+      const totalPills = med.packCount * med.blistersPerPack * med.pillsPerBlister + med.looseTablets + (med.stockAdjustment ?? 0);
       return {
         id: med.id,
         name: med.name,