feat: T6 wave 5 – readiness checks and report, compliance and medicine UI, label UI

- Readiness: all 18 checks (medicine lots, treatment log gaps, labels,
  harvest withdrawal), medicine subjects masked without
  veterinary-medicines:read, report PDF (counts only), summary cached 60 s,
  409 codes READINESS_*.
- Frontend: /compliance page with acknowledge/revoke, dashboard line and
  nav; veterinary medicine catalogue, lots, movement book with inventory
  and disposal; label designer check panel, print card with gap list and
  proof print, food business master data, product legal name.
- Service worker: cacheability is path-based (the backend sends no-store
  on every answer); compliance, medicine, restriction, notice and label
  check/print paths and restricted document kinds are never cached.
- ARCHITECTURE.md §2, §12.10–12.11, Annahmen 86–90.

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

ApiCore-Frontend/src/app/(app)/nav-config.ts

@@ -18,6 +18,7 @@ import {
   Package,
   Scissors,
   Search,
+  ShieldCheck,
   ShoppingBag,
   Snowflake,
   Users,
@@ -70,6 +71,12 @@ export const NAV_GROUPS: NavGroup[] = [
       { label: "Bienenstände", href: "/apiaries", icon: MapPin },
       { label: "Völker", href: "/colonies", icon: Layers },
       { label: "Königinnen", href: "/queens", icon: Crown },
+      {
+        label: "Prüfbereitschaft",
+        href: "/compliance",
+        icon: ShieldCheck,
+        permission: "compliance:read",
+      },
       {
         label: "Überwinterung",
         href: "/winter",