Rename Forte to LunarFront, generalize for any small business

Rebrand from Forte (music-store-specific) to LunarFront (any small business):
- Package namespace @forte/* → @lunarfront/*
- Database forte/forte_test → lunarfront/lunarfront_test
- Docker containers, volumes, connection strings
- UI branding, localStorage keys, test emails
- All documentation and planning docs

Generalize music-specific terminology:
- instrumentDescription → itemDescription
- instrumentCount → itemCount
- instrumentType → itemCategory (on service templates)
- New migration 0027_generalize_terminology for column renames
- Seed data updated with generic examples
- RBAC descriptions updated

packages/admin/src/routes/_authenticated/repair-batches/index.tsx

@@ -49,9 +49,9 @@ const columns: Column<RepairBatch>[] = [
     },
   },
   {
-    key: 'instruments',
-    header: 'Instruments',
-    render: (b) => <>{b.receivedCount}/{b.instrumentCount}</>,
+    key: 'items',
+    header: 'Items',
+    render: (b) => <>{b.receivedCount}/{b.itemCount}</>,
   },
   {
     key: 'due_date',