feat(sprint-5): Phase 6 — Staff management UI (list, invite, permissions, revoke)

- /settings/staff: staff account table with role badges + permission chips
- Invite sheet: email + role template + 8 granular permission checkboxes
- Edit permissions dialog with optimistic update
- Revoke access with AlertDialog confirmation
- React Query hooks wired (useStaffListQuery, mutations)
- Full i18n (de/en), mock fallback, loading skeletons
- Sidebar nav updated: Personal → /settings/staff with UserCog icon
- Added @radix-ui/react-checkbox + Checkbox UI component

cannamanage-frontend/src/data/mock/staff.ts

@@ -0,0 +1,55 @@
+import type { StaffMember } from "@/services/staff"
+
+export const mockStaffAccounts: StaffMember[] = [
+  {
+    id: "staff-1",
+    displayName: "Maria Schulz",
+    email: "maria@gruener-daumen.de",
+    role: "STAFF",
+    permissions: [
+      "RECORD_DISTRIBUTION",
+      "VIEW_MEMBER_LIST",
+      "VIEW_MEMBER_QUOTA",
+    ],
+    status: "ACTIVE",
+    lastLoginAt: "2026-06-10T14:30:00Z",
+    createdAt: "2025-11-15T09:00:00Z",
+  },
+  {
+    id: "staff-2",
+    displayName: "Thomas Klein",
+    email: "thomas@gruener-daumen.de",
+    role: "STAFF",
+    permissions: ["VIEW_STOCK", "RECORD_STOCK_IN", "MANAGE_GROW_CALENDAR"],
+    status: "ACTIVE",
+    lastLoginAt: "2026-06-11T08:45:00Z",
+    createdAt: "2025-12-01T10:00:00Z",
+  },
+  {
+    id: "staff-3",
+    displayName: "Petra Wagner",
+    email: "petra@gruener-daumen.de",
+    role: "MANAGER",
+    permissions: [
+      "RECORD_DISTRIBUTION",
+      "VIEW_MEMBER_LIST",
+      "VIEW_MEMBER_QUOTA",
+      "ADD_MEMBER",
+      "VIEW_STOCK",
+      "RECORD_STOCK_IN",
+      "VIEW_COMPLIANCE_REPORT",
+    ],
+    status: "ACTIVE",
+    lastLoginAt: "2026-06-12T07:15:00Z",
+    createdAt: "2026-01-10T11:00:00Z",
+  },
+  {
+    id: "staff-4",
+    displayName: "Stefan Braun",
+    email: "stefan@gruener-daumen.de",
+    role: "STAFF",
+    permissions: ["RECORD_DISTRIBUTION", "VIEW_MEMBER_LIST"],
+    status: "REVOKED",
+    createdAt: "2025-10-01T08:00:00Z",
+  },
+]

cannamanage-frontend/src/data/navigations.ts

@@ -30,9 +30,9 @@ export const navigationsData: NavigationType[] = [
         iconName: "FileText",
       },
       {
-        title: "Einstellungen",
-        href: "/settings",
-        iconName: "Settings",
+        title: "Personal",
+        href: "/settings/staff",
+        iconName: "UserCog",
       },
     ],
   },