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/components/Sidebar.tsx

@@ -116,7 +116,7 @@ const menuSections: MenuSection[] = [
       {
         path: "/attendance/admin",
         label: "Správa",
-        permission: "attendance.admin",
+        permission: "attendance.manage",
         matchPrefix: "/attendance/admin",
         matchAlso: ["/attendance/create", "/attendance/location"],
         icon: (
@@ -198,7 +198,7 @@ const menuSections: MenuSection[] = [
       {
         path: "/trips/admin",
         label: "Správa",
-        permission: "trips.admin",
+        permission: "trips.manage",
         icon: (
           <svg
             viewBox="0 0 24 24"
@@ -221,7 +221,7 @@ const menuSections: MenuSection[] = [
       {
         path: "/vehicles",
         label: "Vozidla",
-        permission: "trips.vehicles",
+        permission: "vehicles.manage",
         icon: (
           <svg
             viewBox="0 0 24 24"
@@ -315,7 +315,7 @@ const menuSections: MenuSection[] = [
       {
         path: "/offers/customers",
         label: "Zákazníci",
-        permission: "offers.view",
+        permission: "customers.view",
         icon: (
           <svg
             viewBox="0 0 24 24"
@@ -356,7 +356,12 @@ const menuSections: MenuSection[] = [
       {
         path: "/settings",
         label: "Nastavení",
-        permission: "settings.manage",
+        permission: [
+          "settings.company",
+          "settings.banking",
+          "settings.roles",
+          "settings.templates",
+        ],
         icon: (
           <svg
             viewBox="0 0 24 24"