feat(ui): stock card with withdraw and inventory count, production batches

- Bottling detail shows Abgefüllt / Webshop verkauft / Entnommen / Rest
  (negative rest flagged "Prüfen") and the full movement list; buttons
  "Entnehmen" (reason, note) and "Inventur korrigieren" (counted
  quantity, difference booked).
- Rest column in the bottling list.
- New pages for production batches (list, create, detail with the same
  stock card), sidebar entry with its own permission.
- Products get "Art" (honey vs. manufactured goods) and the webshop
  category; bottlings only offer honey articles.

Co-Authored-By: Claude Opus 5.5 (1M context) <[email protected]>

ApiCore-Frontend/src/lib/bottling/types.ts

@@ -9,6 +9,8 @@ export interface BottlingBatch {
   bestBeforeDate: string;
   lotNumber: string;
   createdAt: string;
+  /** jarCount plus all stock movements (shop sales, withdrawals, ...). */
+  remainingCount: number;
   honeyBatch: { id: string; batchNumber: string };
   product: { id: string; name: string } | null;
 }