feat(vat)!: remove VAT entirely from offers, orders and issued orders

Accounting rule: nabidky, objednavky (incl. confirmation PDF) and objednavky
vydane are NOT tax documents - VAT belongs only on invoices. Per user
decision this is a FULL removal including DB columns.

- migration: DROP orders.vat_rate/apply_vat, issued_orders.vat_rate/apply_vat,
  issued_order_items.vat_rate, quotations.vat_rate/apply_vat (applied to
  dev + test DBs)
- services: net-only totals everywhere (computeIssuedOrderTotals(items) ->
  {total}; enrichOrder/enrichQuotation net; per-currency list totals net)
- PDFs (offers, order confirmation, issued order): no VAT columns/summary,
  single 'Celkem bez DPH' / 'Total excl. VAT' total, note under totals:
  'Ceny jsou uvedeny bez DPH. DPH bude uctovano dle platnych predpisu.';
  duplicate Cena/Celkem column merged (desc width 56%); orders-pdf render
  extracted as exported renderOrderConfirmationHtml for testability
- frontend: Uplatnit DPH checkboxes, VAT selects and per-item VAT columns
  removed from OfferDetail/OrderDetail/IssuedOrderDetail/
  OrderConfirmationModal/ReceivedOrders manual-create; list footers read
  'Celkem bez DPH'; invoice-from-order prefill now takes the company default
  VAT (invoice decides its own VAT)
- tests: suites reworked to net math; new pdf-vat-note.test.ts pins the
  exact cs+en note text and VAT-free layout on all three PDFs

Invoices and received invoices keep their VAT handling unchanged.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

src/routes/admin/orders-pdf.ts

@@ -20,16 +20,14 @@ const OrderPdfItemSchema = z.object({
   unit: z.string().max(255),
   unit_price: z.number().min(0).finite(),
   is_included_in_total: z.boolean().optional(),
-  vat_rate: z.number().min(0).max(100).finite(),
 });
 
 // `z.looseObject` is the Zod 4 replacement for the deprecated `.passthrough()`.
-// `items` is strictly validated; `lang`/`applyVat` are typed explicitly so the
-// handler no longer reads them as untyped passthrough keys.
+// `items` is strictly validated; `lang` is typed explicitly so the handler no
+// longer reads it as an untyped passthrough key.
 const OrderPdfBodySchema = z.looseObject({
   items: z.array(OrderPdfItemSchema).optional(),
   lang: z.string().max(10).optional(),
-  applyVat: z.boolean().optional(),
 });
 
 /* ── Helpers ─────────────────────────────────────────────────────── */
@@ -193,15 +191,11 @@ const translations: Record<string, Record<string, string>> = {
     col_desc: "Popis",
     col_qty: "Množství",
     col_unit_price: "Jedn. cena",
-    col_price: "Cena",
-    col_vat_pct: "%DPH",
-    col_vat: "DPH",
     col_total: "Celkem",
-    subtotal: "Mezisoučet:",
-    vat_label: "DPH",
-    total: "Celkem",
     total_no_vat: "Celkem bez DPH",
     amounts_in: "Částky jsou uvedeny v",
+    vat_notice:
+      "Ceny jsou uvedeny bez DPH. DPH bude účtováno dle platných předpisů.",
     notes: "Poznámky",
     issued_by: "Vystavil:",
     received_by: "Převzal:",
@@ -222,15 +216,11 @@ const translations: Record<string, Record<string, string>> = {
     col_desc: "Description",
     col_qty: "Quantity",
     col_unit_price: "Unit price",
-    col_price: "Price",
-    col_vat_pct: "VAT%",
-    col_vat: "VAT",
     col_total: "Total",
-    subtotal: "Subtotal:",
-    vat_label: "VAT",
-    total: "Total",
     total_no_vat: "Total excl. VAT",
     amounts_in: "Amounts are in",
+    vat_notice:
+      "Prices are exclusive of VAT. VAT will be charged according to applicable regulations.",
     notes: "Notes",
     issued_by: "Issued by:",
     received_by: "Received by:",
@@ -240,212 +230,119 @@ const translations: Record<string, Record<string, string>> = {
   },
 };
 
-/* ── Route ───────────────────────────────────────────────────────── */
+/* ── Template ────────────────────────────────────────────────────── */
 
-export default async function ordersPdfRoutes(
-  fastify: FastifyInstance,
-): Promise<void> {
-  fastify.post<{ Params: { id: string }; Body: Record<string, unknown> }>(
-    "/:id/confirmation",
-    { preHandler: requirePermission("orders.view") },
-    async (request, reply) => {
-      const id = parseId(request.params.id, reply);
-      if (id === null) return;
-      const parsed = parseBody(OrderPdfBodySchema, request.body || {});
-      if ("error" in parsed) return error(reply, parsed.error, 400);
-      const body = parsed.data;
+export interface OrderConfirmationPdfItem {
+  description: string;
+  quantity: number;
+  unit: string;
+  unit_price: number;
+  is_included_in_total: boolean;
+}
 
-      try {
-        const lang = body.lang === "en" ? "en" : "cs";
-        const t = translations[lang];
+interface OrderConfirmationPdfData {
+  order_number: string | null;
+  customer_order_number: string | null;
+  created_at: Date | string | null;
+  currency: string | null;
+  notes: string | null;
+  // Not a real orders column today — read defensively (PHP-era data carried it).
+  payment_method?: string | null;
+  customers?: Record<string, unknown> | null;
+}
 
-        const order = await prisma.orders.findUnique({
-          where: { id },
-          // The confirmation PDF never renders the PO attachment — don't pull
-          // the blob just to read the order header/items.
-          omit: { attachment_data: true },
-          include: {
-            customers: true,
-            order_items: { orderBy: { position: "asc" } },
-          },
-        });
+/**
+ * Order-confirmation HTML. The confirmation is NOT a tax document — prices
+ * are NET only: no VAT columns or VAT summary, the grand total is labeled
+ * "Celkem bez DPH" and the totals box carries the fixed prices-excl.-VAT
+ * notice. Exported for tests.
+ */
+export function renderOrderConfirmationHtml(
+  order: OrderConfirmationPdfData,
+  items: OrderConfirmationPdfItem[],
+  settings: Record<string, unknown> | null,
+  lang: "cs" | "en",
+  userName: string,
+): string {
+  const t = translations[lang];
 
-        if (!order) {
-          return reply
-            .status(404)
-            .type("text/html")
-            .send("<html><body><h1>Objednávka nenalezena</h1></body></html>");
-        }
+  let logoImg = "";
+  if (settings?.logo_data) {
+    const buf = Buffer.from(settings.logo_data as Buffer);
+    let mime = "image/png";
+    if (buf[0] === 0xff && buf[1] === 0xd8) mime = "image/jpeg";
+    else if (buf[0] === 0x47 && buf[1] === 0x49) mime = "image/gif";
+    else if (buf[0] === 0x52 && buf[1] === 0x49) mime = "image/webp";
+    const b64 = buf.toString("base64");
+    logoImg = `<img src="data:${escapeHtml(mime)};base64,${b64}" class="logo" />`;
+  }
 
-        const settings = (await prisma.company_settings.findFirst()) as Record<
-          string,
-          unknown
-        > | null;
+  const currency = order.currency || "CZK";
 
-        let logoImg = "";
-        if (settings?.logo_data) {
-          const buf = Buffer.from(settings.logo_data as Buffer);
-          let mime = "image/png";
-          if (buf[0] === 0xff && buf[1] === 0xd8) mime = "image/jpeg";
-          else if (buf[0] === 0x47 && buf[1] === 0x49) mime = "image/gif";
-          else if (buf[0] === 0x52 && buf[1] === 0x49) mime = "image/webp";
-          const b64 = buf.toString("base64");
-          logoImg = `<img src="data:${escapeHtml(mime)};base64,${b64}" class="logo" />`;
-        }
+  // NET-only total over the included lines — no VAT math anywhere.
+  let total = 0;
+  for (const item of items) {
+    if (item.is_included_in_total) total += item.quantity * item.unit_price;
+  }
+  total = Math.round(total * 100) / 100;
 
-        const currency = order.currency || "CZK";
-        const applyVat =
-          body.applyVat !== undefined ? !!body.applyVat : !!order.apply_vat;
-        const orderVatRate = Number(order.vat_rate) || 21;
+  const supp = buildAddressLines(settings, true, t);
+  const cust = buildAddressLines(
+    (order.customers as Record<string, unknown>) || null,
+    false,
+    t,
+  );
 
-        // The confirmation PDF can be rendered from client-supplied items (e.g.
-        // a live preview of unsaved edits on the detail page) OR from the
-        // stored order. Fabricating descriptions/prices that don't reflect the
-        // stored order is an editing action, so the custom-items path requires
-        // `orders.edit` (admins bypass). A view-only caller is silently served
-        // the STORED order items instead — preventing a `orders.view` holder
-        // from producing an "official" confirmation with invented figures.
-        const authData = request.authData;
-        const canUseCustomItems =
-          authData?.roleName === "admin" ||
-          !!authData?.permissions.includes("orders.edit");
-        const customItemsRaw =
-          canUseCustomItems && Array.isArray(body.items) ? body.items : null;
+  const suppLinesHtml = supp.lines
+    .map((l) => `<div class="address-line">${escapeHtml(l)}</div>`)
+    .join("");
+  const custLinesHtml = cust.lines
+    .map((l) => `<div class="address-line">${escapeHtml(l)}</div>`)
+    .join("");
 
-        let items: Array<{
-          description: string;
-          quantity: number;
-          unit: string;
-          unit_price: number;
-          is_included_in_total: boolean;
-          vat_rate: number;
-        }> = [];
+  const orderNumber = escapeHtml(order.order_number || "");
+  const poNumber = escapeHtml(order.customer_order_number || "");
+  const orderDateStr = formatDate(order.created_at);
 
-        if (customItemsRaw && customItemsRaw.length > 0) {
-          items = customItemsRaw.map((it) => ({
-            description: it.description,
-            quantity: it.quantity,
-            unit: it.unit,
-            unit_price: it.unit_price,
-            is_included_in_total: it.is_included_in_total !== false,
-            vat_rate: it.vat_rate,
-          }));
-        } else {
-          items = order.order_items.map((it) => ({
-            description: it.description || "",
-            quantity: Number(it.quantity) || 0,
-            unit: it.unit || "",
-            unit_price: Number(it.unit_price) || 0,
-            is_included_in_total: !!it.is_included_in_total,
-            vat_rate: orderVatRate,
-          }));
-        }
-
-        let subtotal = 0;
-        let totalVat = 0;
-        const vatSummary: Record<string, { base: number; vat: number }> = {};
-        for (const item of items) {
-          if (item.is_included_in_total) {
-            const lineTotal = item.quantity * item.unit_price;
-            subtotal += lineTotal;
-            const rate = item.vat_rate;
-            const key = String(rate);
-            if (!vatSummary[key]) vatSummary[key] = { base: 0, vat: 0 };
-            vatSummary[key].base += lineTotal;
-            if (applyVat) {
-              const lineVat = (lineTotal * rate) / 100;
-              vatSummary[key].vat += lineVat;
-              totalVat += lineVat;
-            }
-          }
-        }
-        const totalToPay = subtotal + totalVat;
-
-        const userName = request.authData
-          ? `${request.authData.firstName || ""} ${request.authData.lastName || ""}`.trim()
-          : "";
-
-        const supp = buildAddressLines(settings, true, t);
-        const cust = buildAddressLines(
-          (order.customers as Record<string, unknown>) || null,
-          false,
-          t,
-        );
-
-        const suppLinesHtml = supp.lines
-          .map((l) => `<div class="address-line">${escapeHtml(l)}</div>`)
-          .join("");
-        const custLinesHtml = cust.lines
-          .map((l) => `<div class="address-line">${escapeHtml(l)}</div>`)
-          .join("");
-
-        const orderNumber = escapeHtml(order.order_number || "");
-        const poNumber = escapeHtml(order.customer_order_number || "");
-        const orderDateStr = formatDate(order.created_at);
-
-        const itemsHtml = items
-          .map((item, i) => {
-            const lineSubtotal = item.quantity * item.unit_price;
-            const lineVat = applyVat ? (lineSubtotal * item.vat_rate) / 100 : 0;
-            const lineTotal = lineSubtotal + lineVat;
-            const qtyDecimals =
-              Math.floor(item.quantity) === item.quantity ? 0 : 2;
-            // Without "Uplatnit DPH" the VAT columns are dropped entirely
-            // (the header does the same) instead of printing 0% / 0.00.
-            const vatCells = applyVat
-              ? `
-            <td class="center">${Math.floor(item.vat_rate)}%</td>
-            <td class="right">${formatNum(lineVat)}</td>`
-              : "";
-            return `<tr>
+  const itemsHtml = items
+    .map((item, i) => {
+      const lineTotal = item.quantity * item.unit_price;
+      const qtyDecimals = Math.floor(item.quantity) === item.quantity ? 0 : 2;
+      return `<tr>
             <td class="row-num">${i + 1}</td>
             <td class="desc">${escapeHtml(item.description)}</td>
             <td class="center">${formatNum(item.quantity, qtyDecimals)}${item.unit ? ` / ${escapeHtml(item.unit)}` : ""}</td>
             <td class="right">${formatNum(item.unit_price)}</td>
-            <td class="right">${formatNum(lineSubtotal)}</td>${vatCells}
             <td class="right total-cell">${formatNum(lineTotal)}</td>
         </tr>`;
-          })
-          .join("");
+    })
+    .join("");
 
-        const paymentMethod =
-          String((order as Record<string, unknown>).payment_method || "") ||
-          (lang === "cs" ? "převodem" : "Bank transfer");
+  const paymentMethod =
+    String(order.payment_method || "") ||
+    (lang === "cs" ? "převodem" : "Bank transfer");
 
-        let vatDetailHtml = "";
-        if (applyVat) {
-          for (const [rate, data] of Object.entries(vatSummary)) {
-            if (data.vat > 0) {
-              vatDetailHtml += `
-        <div class="row">
-          <span class="label">${escapeHtml(t.vat_label)} ${Math.floor(Number(rate))}%:</span>
-          <span class="value">${formatNum(data.vat)} ${escapeHtml(currency)}</span>
-        </div>`;
-            }
-          }
-        }
-
-        const notesRaw = order.notes ?? "";
-        const notesStripped = notesRaw.replace(/<[^>]*>/g, "").trim();
-        const notesHtml = notesStripped
-          ? `
+  const notesRaw = order.notes ?? "";
+  const notesStripped = notesRaw.replace(/<[^>]*>/g, "").trim();
+  const notesHtml = notesStripped
+    ? `
   <div class="invoice-notes">
     <div class="invoice-notes-label">${escapeHtml(t.notes)}</div>
     <div class="invoice-notes-content">${cleanQuillHtml(DOMPurify.sanitize(notesRaw))}</div>
   </div>
   `
-          : "";
+    : "";
 
-        // Quill indent CSS
-        let indentCSS = "";
-        for (let n = 1; n <= 9; n++) {
-          const pad = n * 3;
-          const liPad = n * 3 + 1.5;
-          indentCSS += `  .ql-indent-${n} { padding-left: ${pad}em; }\n`;
-          indentCSS += `  li.ql-indent-${n} { padding-left: ${liPad}em; }\n`;
-        }
+  // Quill indent CSS
+  let indentCSS = "";
+  for (let n = 1; n <= 9; n++) {
+    const pad = n * 3;
+    const liPad = n * 3 + 1.5;
+    indentCSS += `  .ql-indent-${n} { padding-left: ${pad}em; }\n`;
+    indentCSS += `  li.ql-indent-${n} { padding-left: ${liPad}em; }\n`;
+  }
 
-        const html = `<!DOCTYPE html>
+  return `<!DOCTYPE html>
 <html lang="${escapeHtml(lang)}">
 <head>
 <meta charset="utf-8" />
@@ -676,6 +573,12 @@ export default async function ordersPdfRoutes(
     color: #1a1a1a;
     margin-top: 2mm;
   }
+  .totals .vat-note {
+    text-align: right;
+    font-size: 8pt;
+    color: #646464;
+    margin-top: 1mm;
+  }
 
   /* Vystavil */
   .issued-by {
@@ -693,47 +596,6 @@ export default async function ordersPdfRoutes(
     line-height: 1.3;
   }
 
-  /* DPH rekapitulace + QR */
-  .recap-section {
-    display: flex;
-    gap: 5mm;
-    align-items: flex-start;
-    margin-top: 1mm;
-  }
-  .recap-section .qr {
-    flex-shrink: 0;
-    width: 28mm;
-  }
-  .recap-section .qr img,
-  .recap-section .qr svg { width: 28mm; height: 28mm; }
-
-  .recap-section table {
-    border-collapse: collapse;
-    font-size: 9pt;
-    flex: 1;
-  }
-  .recap-section table th {
-    font-size: 8pt;
-    font-weight: 600;
-    color: #555;
-    padding: 3px 6px;
-    text-align: right;
-    border-bottom: 0.5pt solid #ccc;
-  }
-  .recap-section table td {
-    padding: 3px 6px;
-    text-align: right;
-    border-bottom: 0.5pt solid #eee;
-  }
-  .recap-section table td.center { text-align: center; }
-  .recap-section table td.cnb-rate {
-    font-size: 8pt;
-    color: #888;
-    text-align: right;
-    border-bottom: none;
-    padding-top: 4px;
-  }
-
   /* Prevzal / razitko */
   .footer-row {
     display: flex;
@@ -855,17 +717,10 @@ ${indentCSS}
     <thead>
       <tr>
         <th class="center" style="width:3%">${escapeHtml(t.col_no)}</th>
-        <th style="width:${applyVat ? 36 : 46}%">${escapeHtml(t.col_desc)}</th>
+        <th style="width:56%">${escapeHtml(t.col_desc)}</th>
         <th class="center" style="width:10%">${escapeHtml(t.col_qty)}</th>
         <th class="right" style="width:10%">${escapeHtml(t.col_unit_price)}</th>
-        <th class="right" style="width:10%">${escapeHtml(t.col_price)}</th>${
-          applyVat
-            ? `
-        <th class="center" style="width:5%">${escapeHtml(t.col_vat_pct)}</th>
-        <th class="right" style="width:10%">${escapeHtml(t.col_vat)}</th>`
-            : ""
-        }
-        <th class="right" style="width:${applyVat ? 16 : 21}%">${escapeHtml(t.col_total)}</th>
+        <th class="right" style="width:21%">${escapeHtml(t.col_total)}</th>
       </tr>
     </thead>
     <tbody>
@@ -873,24 +728,15 @@ ${indentCSS}
     </tbody>
   </table>
 
-  <!-- Soucty (bez DPH jen souhrnny radek - mezisoucet by ho jen opakoval) -->
+  <!-- Soucty (jen souhrnny radek bez DPH - mezisoucet by ho jen opakoval) -->
   <div class="totals-wrapper">
-    <div class="totals">${
-      applyVat
-        ? `
-      <div class="detail-rows">
-        <div class="row">
-          <span class="label">${escapeHtml(t.subtotal)}</span>
-          <span class="value">${formatNum(subtotal)} ${escapeHtml(currency)}</span>
-        </div>${vatDetailHtml}
-      </div>`
-        : ""
-    }
+    <div class="totals">
       <div class="grand">
-        <span class="label">${escapeHtml(applyVat ? t.total : t.total_no_vat)}</span>
-        <span class="value">${formatNum(totalToPay)} ${escapeHtml(currency)}</span>
+        <span class="label">${escapeHtml(t.total_no_vat)}</span>
+        <span class="value">${formatNum(total)} ${escapeHtml(currency)}</span>
       </div>
       <div class="currency-note">${escapeHtml(t.amounts_in)} ${escapeHtml(currency)}</div>
+      <div class="vat-note">${escapeHtml(t.vat_notice)}</div>
     </div>
   </div>
 
@@ -915,9 +761,96 @@ ${indentCSS}
 
 </body>
 </html>`;
+}
+
+/* ── Route ───────────────────────────────────────────────────────── */
+
+export default async function ordersPdfRoutes(
+  fastify: FastifyInstance,
+): Promise<void> {
+  fastify.post<{ Params: { id: string }; Body: Record<string, unknown> }>(
+    "/:id/confirmation",
+    { preHandler: requirePermission("orders.view") },
+    async (request, reply) => {
+      const id = parseId(request.params.id, reply);
+      if (id === null) return;
+      const parsed = parseBody(OrderPdfBodySchema, request.body || {});
+      if ("error" in parsed) return error(reply, parsed.error, 400);
+      const body = parsed.data;
+
+      try {
+        const lang = body.lang === "en" ? "en" : "cs";
+
+        const order = await prisma.orders.findUnique({
+          where: { id },
+          // The confirmation PDF never renders the PO attachment — don't pull
+          // the blob just to read the order header/items.
+          omit: { attachment_data: true },
+          include: {
+            customers: true,
+            order_items: { orderBy: { position: "asc" } },
+          },
+        });
+
+        if (!order) {
+          return reply
+            .status(404)
+            .type("text/html")
+            .send("<html><body><h1>Objednávka nenalezena</h1></body></html>");
+        }
+
+        const settings = (await prisma.company_settings.findFirst()) as Record<
+          string,
+          unknown
+        > | null;
+
+        // The confirmation PDF can be rendered from client-supplied items (e.g.
+        // a live preview of unsaved edits on the detail page) OR from the
+        // stored order. Fabricating descriptions/prices that don't reflect the
+        // stored order is an editing action, so the custom-items path requires
+        // `orders.edit` (admins bypass). A view-only caller is silently served
+        // the STORED order items instead — preventing a `orders.view` holder
+        // from producing an "official" confirmation with invented figures.
+        const authData = request.authData;
+        const canUseCustomItems =
+          authData?.roleName === "admin" ||
+          !!authData?.permissions.includes("orders.edit");
+        const customItemsRaw =
+          canUseCustomItems && Array.isArray(body.items) ? body.items : null;
+
+        let items: OrderConfirmationPdfItem[];
+        if (customItemsRaw && customItemsRaw.length > 0) {
+          items = customItemsRaw.map((it) => ({
+            description: it.description,
+            quantity: it.quantity,
+            unit: it.unit,
+            unit_price: it.unit_price,
+            is_included_in_total: it.is_included_in_total !== false,
+          }));
+        } else {
+          items = order.order_items.map((it) => ({
+            description: it.description || "",
+            quantity: Number(it.quantity) || 0,
+            unit: it.unit || "",
+            unit_price: Number(it.unit_price) || 0,
+            is_included_in_total: !!it.is_included_in_total,
+          }));
+        }
+
+        const userName = request.authData
+          ? `${request.authData.firstName || ""} ${request.authData.lastName || ""}`.trim()
+          : "";
+
+        const html = renderOrderConfirmationHtml(
+          order,
+          items,
+          settings,
+          lang,
+          userName,
+        );
 
         const pdfBuffer = await htmlToPdf(html);
-        const filename = `Potvrzeni-${orderNumber || String(id)}.pdf`;
+        const filename = `Potvrzeni-${order.order_number || String(id)}.pdf`;
 
         return reply
           .type("application/pdf")