v1.6.5: fix attendance unique constraint, schema sync, seed script

- Change attendance idx_attendance_user_date from unique to index (allow multiple shifts per day)
- Reset migrations to single baseline init migration
- Add seed script with admin user (admin/admin)
- Update CLAUDE.md with migration workflow documentation
- Various frontend fixes (queries, pages, hooks)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/admin/lib/queries/offers.ts

@@ -1,22 +1,67 @@
 import { queryOptions } from "@tanstack/react-query";
 import { jsonQuery, paginatedJsonQuery } from "../apiAdapter";
 
+export interface ItemTemplate {
+  id: number;
+  name: string;
+  description: string;
+  default_price: number;
+  category: string;
+}
+
+export interface ScopeSection {
+  _key: string;
+  title: string;
+  title_cz: string;
+  content: string;
+}
+
+export interface ScopeTemplate {
+  id: number;
+  name: string;
+  description?: string;
+  scope_template_sections?: ScopeSection[];
+}
+
+export interface CustomField {
+  name: string;
+  value: string;
+  showLabel: boolean;
+  _key?: string;
+}
+
+export interface Customer {
+  id: number;
+  name: string;
+  street?: string;
+  city?: string;
+  postal_code?: string;
+  country?: string;
+  company_id?: string;
+  vat_id?: string;
+  quotation_count: number;
+  custom_fields?: CustomField[];
+  customer_field_order?: string[];
+}
+
 export const offerCustomersOptions = () =>
   queryOptions({
     queryKey: ["offer-customers"],
-    queryFn: () => jsonQuery<Record<string, unknown>>("/api/admin/customers"),
+    queryFn: () => jsonQuery<Customer[]>("/api/admin/customers"),
     staleTime: 2 * 60_000,
   });
 
-export const offerTemplatesOptions = (action?: string) =>
+export const itemTemplatesOptions = () =>
   queryOptions({
-    queryKey: ["offer-templates", action ?? "all"],
-    queryFn: () => {
-      const url = action
-        ? `/api/admin/offers-templates?action=${action}`
-        : "/api/admin/offers-templates";
-      return jsonQuery<Record<string, unknown>[]>(url);
-    },
+    queryKey: ["offer-templates", "items"],
+    queryFn: () =>
+      jsonQuery<ItemTemplate[]>("/api/admin/offers-templates?action=items"),
+  });
+
+export const scopeTemplatesOptions = () =>
+  queryOptions({
+    queryKey: ["offer-templates", "scopes"],
+    queryFn: () => jsonQuery<ScopeTemplate[]>("/api/admin/offers-templates"),
   });
 
 export const offerListOptions = (filters: {
@@ -40,11 +85,62 @@ export const offerListOptions = (filters: {
     },
   });
 
+export interface OfferItemData {
+  id?: number;
+  description: string;
+  item_description: string;
+  quantity: number;
+  unit: string;
+  unit_price: number;
+  is_included_in_total: boolean;
+  position?: number;
+}
+
+export interface OfferSectionData {
+  title: string;
+  title_cz: string;
+  content: string;
+  position?: number;
+}
+
+export interface OfferLockInfo {
+  user_id: number;
+  username: string;
+  full_name: string;
+}
+
+export interface OfferOrderInfo {
+  id: number;
+  order_number: string;
+  status?: string;
+}
+
+export interface OfferDetailData {
+  id: number;
+  quotation_number: string;
+  project_code: string;
+  customer_id: number | null;
+  customer_name: string;
+  created_at: string;
+  valid_until: string;
+  currency: string;
+  language: string;
+  vat_rate: number;
+  apply_vat: boolean;
+  exchange_rate: string;
+  scope_title: string;
+  scope_description: string;
+  items?: OfferItemData[];
+  sections?: OfferSectionData[];
+  status: string;
+  order: OfferOrderInfo | null;
+  locked_by: OfferLockInfo | null;
+}
+
 export const offerDetailOptions = (id: string | undefined) =>
   queryOptions({
     queryKey: ["offers", id],
-    queryFn: () =>
-      jsonQuery<Record<string, unknown>>(`/api/admin/offers/${id}`),
+    queryFn: () => jsonQuery<OfferDetailData>(`/api/admin/offers/${id}`),
     enabled: !!id,
   });