v1.6.9: cleanup offer dead columns, add item template picker to offer form

- Remove dead DB columns: uuid, sync_version from quotations/quotation_items/scope_sections; is_deleted from quotation_items/scope_sections; content_editor_height from scope_sections
- Remove unused scope_title/scope_description from offer form state
- Remove dead CSS: offers-template-menu, offers-draft-indicator, exchange-rate
- Remove dead scope_title translation key from offers PDF
- Fix duplicate Customer interface in OfferDetail.tsx (use shared type)
- Add missing title field to ScopeTemplate interface
- Add item template picker dropdown next to "Přidat položku" button

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

src/admin/pages/OfferDetail.tsx

@@ -16,12 +16,15 @@ import {
   offerCustomersOptions,
   scopeTemplatesOptions,
   offerNextNumberOptions,
+  itemTemplatesOptions,
+  type ItemTemplate,
   type OfferDetailData,
   type OfferItemData,
   type OfferSectionData,
   type OfferLockInfo,
   type OfferOrderInfo,
   type ScopeTemplate,
+  type Customer,
 } from "../lib/queries/offers";
 
 import {
@@ -90,14 +93,6 @@ interface OfferForm {
   language: string;
   vat_rate: number;
   apply_vat: boolean;
-  scope_title: string;
-  scope_description: string;
-}
-
-interface Customer {
-  id: number;
-  name: string;
-  city?: string;
 }
 
 const emptyForm: OfferForm = {
@@ -111,8 +106,6 @@ const emptyForm: OfferForm = {
   language: "EN",
   vat_rate: 21,
   apply_vat: false,
-  scope_title: "",
-  scope_description: "",
 };
 
 const emptyScopeSection = (): ScopeSection => ({
@@ -319,6 +312,7 @@ export default function OfferDetail() {
     enabled: !isEdit,
   });
   const { data: templatesData } = useQuery(scopeTemplatesOptions());
+  const { data: itemTemplates } = useQuery(itemTemplatesOptions());
   const { data: nextNumberData } = useQuery({
     ...offerNextNumberOptions(),
     enabled: !isEdit,
@@ -350,11 +344,6 @@ export default function OfferDetail() {
         language: (draft.form.language as string) || emptyForm.language,
         vat_rate: (draft.form.vat_rate as number) ?? emptyForm.vat_rate,
         apply_vat: (draft.form.apply_vat as boolean) ?? emptyForm.apply_vat,
-        scope_title:
-          (draft.form.scope_title as string) || emptyForm.scope_title,
-        scope_description:
-          (draft.form.scope_description as string) ||
-          emptyForm.scope_description,
       };
     }
     return emptyForm;
@@ -445,8 +434,6 @@ export default function OfferDetail() {
       language: d.language || "EN",
       vat_rate: d.vat_rate ?? companySettings?.default_vat_rate ?? 21,
       apply_vat: !!d.apply_vat,
-      scope_title: d.scope_title || "",
-      scope_description: d.scope_description || "",
     };
     setForm(formData);
     const mappedItems =
@@ -1252,12 +1239,59 @@ export default function OfferDetail() {
           <div className="admin-card-header flex-between">
             <h3 className="admin-card-title">Položky</h3>
             {!readOnly && (
-              <button
-                onClick={addItem}
-                className="admin-btn admin-btn-secondary admin-btn-sm"
+              <div
+                style={{
+                  display: "flex",
+                  gap: "0.5rem",
+                  alignItems: "center",
+                }}
               >
-                + Přidat položku
-              </button>
+                {itemTemplates && itemTemplates.length > 0 && (
+                  <select
+                    className="admin-form-select"
+                    style={{ width: "auto", minWidth: "160px" }}
+                    defaultValue=""
+                    onChange={(e) => {
+                      const templateId = Number(e.target.value);
+                      if (!templateId) return;
+                      const template = itemTemplates.find(
+                        (t: ItemTemplate) => t.id === templateId,
+                      );
+                      if (template) {
+                        setItems((prev) => [
+                          ...prev,
+                          {
+                            _key: `item-${++itemKeyCounter.current}`,
+                            description: template.name || "",
+                            item_description: template.description || "",
+                            quantity: 1,
+                            unit: "ks",
+                            unit_price: template.default_price || 0,
+                            is_included_in_total: true,
+                          },
+                        ]);
+                        alert.success(
+                          `Načtena šablona položky "${template.name}"`,
+                        );
+                      }
+                      e.target.value = "";
+                    }}
+                  >
+                    <option value="">Ze šablony...</option>
+                    {itemTemplates.map((t: ItemTemplate) => (
+                      <option key={t.id} value={t.id}>
+                        {t.name}
+                      </option>
+                    ))}
+                  </select>
+                )}
+                <button
+                  onClick={addItem}
+                  className="admin-btn admin-btn-secondary admin-btn-sm"
+                >
+                  + Přidat položku
+                </button>
+              </div>
             )}
           </div>
           {errors.items && (
@@ -1408,13 +1442,6 @@ export default function OfferDetail() {
                             content: s.content || "",
                           }));
                         setSections((prev) => [...prev, ...newSections]);
-                        if (template.description) {
-                          setForm((prev) => ({
-                            ...prev,
-                            scope_description:
-                              template.description || prev.scope_description,
-                          }));
-                        }
                         alert.success(`Načtena šablona "${template.name}"`);
                       }
                       e.target.value = "";