v1.6.8: remove offer exchange rate, add invoice item description, offer filters, table animations

- Remove exchange_rate and exchange_rate_date from quotations (schema, service, PDF, form)
- Add item_description field to invoice_items (schema, migration, service, form, PDF)
- Add offer status/customer/order filters with tab-based UI
- Clean up offer statuses to active/ordered/invalidated
- Allow invalidate action for non-ordered offers (not just expired)
- Add fade animations on offers and invoices table data changes

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

src/services/invoices.service.ts

@@ -23,6 +23,7 @@ const ALLOWED_SORT_FIELDS = [
 
 interface InvoiceItemInput {
   description?: string;
+  item_description?: string;
   quantity?: number;
   unit?: string;
   unit_price?: number;
@@ -374,6 +375,7 @@ export async function createInvoice(body: Record<string, any>) {
       data: (body.items as InvoiceItemInput[]).map((item, i) => ({
         invoice_id: invoice.id,
         description: item.description ?? null,
+        item_description: item.item_description ?? null,
         quantity: item.quantity ?? 1,
         unit: item.unit ?? null,
         unit_price: item.unit_price ?? 0,
@@ -471,6 +473,7 @@ export async function updateInvoice(id: number, body: Record<string, any>) {
         data: (body.items as InvoiceItemInput[]).map((item, i) => ({
           invoice_id: id,
           description: item.description ?? null,
+          item_description: item.item_description ?? null,
           quantity: item.quantity ?? 1,
           unit: item.unit ?? null,
           unit_price: item.unit_price ?? 0,

src/services/offers.service.ts

@@ -44,6 +44,7 @@ interface ListOffersParams {
   search: string;
   status?: string;
   customer_id?: number;
+  has_order?: string;
 }
 
 function enrichQuotation(q: any) {
@@ -72,13 +73,24 @@ function enrichQuotation(q: any) {
 }
 
 export async function listOffers(params: ListOffersParams) {
-  const { page, limit, skip, sort, order, search, status, customer_id } =
-    params;
+  const {
+    page,
+    limit,
+    skip,
+    sort,
+    order,
+    search,
+    status,
+    customer_id,
+    has_order,
+  } = params;
   const sortField = ALLOWED_SORT_FIELDS.includes(sort) ? sort : "id";
 
   const where: Record<string, unknown> = {};
   if (status) where.status = status;
   if (customer_id) where.customer_id = customer_id;
+  if (has_order === "yes") where.order_id = { not: null };
+  if (has_order === "no") where.order_id = null;
   if (search) {
     where.OR = [
       { quotation_number: { contains: search } },
@@ -184,7 +196,6 @@ export async function createOffer(body: Record<string, any>) {
         language: body.language ? String(body.language) : "cs",
         vat_rate: body.vat_rate != null ? Number(body.vat_rate) : 21.0,
         apply_vat: body.apply_vat !== false,
-        exchange_rate: body.exchange_rate ? Number(body.exchange_rate) : 1.0,
         status: body.status ? String(body.status) : "active",
         scope_title: body.scope_title ? String(body.scope_title) : null,
         scope_description: body.scope_description
@@ -255,8 +266,6 @@ export async function updateOffer(id: number, body: Record<string, any>) {
           body.apply_vat === 1 ||
           body.apply_vat === "1"
         : undefined,
-    exchange_rate:
-      body.exchange_rate !== undefined ? Number(body.exchange_rate) : undefined,
     status: body.status !== undefined ? String(body.status) : undefined,
     project_code:
       body.project_code !== undefined
@@ -354,7 +363,6 @@ export async function duplicateOffer(id: number) {
         language: original.language,
         vat_rate: original.vat_rate,
         apply_vat: original.apply_vat,
-        exchange_rate: original.exchange_rate,
         status: "active",
         scope_title: original.scope_title,
         scope_description: original.scope_description,

src/services/orders.service.ts

@@ -206,7 +206,6 @@ export async function createOrderFromQuotation(
         language: quotation.language || "cs",
         vat_rate: quotation.vat_rate ?? 21.0,
         apply_vat: quotation.apply_vat ?? true,
-        exchange_rate: quotation.exchange_rate ?? 1.0,
         scope_title: quotation.scope_title,
         scope_description: quotation.scope_description,
         attachment_data: attachmentBuffer