feat: add check position selector and fix logo not rendering

Add per-account check position setting (top/middle/bottom/3-per-page)
so checks print in a specific slot on the page. Fix logos never
appearing on checks or in the layout editor — the Logo layout field
was missing from the default seed data and existing accounts.

src/app.js

@@ -106,7 +106,7 @@ app.put('/api/account/:id', requireAdmin, (req, res) => {
     bank_name, bank_info1, bank_info2, bank_info3, transit_code,
     routing_number, account_number,
     offset_left, offset_right, offset_up, offset_down,
-    logo_data, second_signature,
+    logo_data, second_signature, check_position,
   } = req.body;
 
   if (!company1 || !routing_number || !account_number) {
@@ -117,13 +117,16 @@ app.put('/api/account/:id', requireAdmin, (req, res) => {
     return res.status(400).json({ error: 'Logo image must be smaller than 512 KB.' });
   }
 
+  const VALID_POSITIONS = ['3-per-page', 'top', 'middle', 'bottom'];
+  const resolvedPosition = VALID_POSITIONS.includes(check_position) ? check_position : '3-per-page';
+
   db.prepare(`
     UPDATE account SET
       company1 = ?, company2 = ?, company3 = ?, company4 = ?,
       bank_name = ?, bank_info1 = ?, bank_info2 = ?, bank_info3 = ?, transit_code = ?,
       routing_number = ?, account_number = ?,
       offset_left = ?, offset_right = ?, offset_up = ?, offset_down = ?,
-      second_signature = ?,
+      second_signature = ?, check_position = ?,
       logo_data = CASE WHEN ? IS NOT NULL THEN ? ELSE logo_data END,
       updated_at = datetime('now')
     WHERE id = ?
@@ -133,7 +136,7 @@ app.put('/api/account/:id', requireAdmin, (req, res) => {
     routing_number, account_number,
     parseFloat(offset_left) || 0, parseFloat(offset_right) || 0,
     parseFloat(offset_up) || 0, parseFloat(offset_down) || 0,
-    second_signature ? 1 : 0,
+    second_signature ? 1 : 0, resolvedPosition,
     logo_data || null, logo_data || null,
     req.params.id
   );

src/db/database.js

@@ -160,6 +160,8 @@ db.exec(`
 
 // Default layout fields used for seeding and migration.
 const DEFAULT_LAYOUT_FIELDS = [
+    // Logo — top left corner (Graph type, rendered as image from account.logo_data)
+    { field_name: 'Logo',          field_type: 'Graph',   x_pos: 0.10, y_pos: 0.08, x_end_pos: 0.45, y_end_pos: 0.58, font_name: 'Helvetica', font_size: 10, font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
     // Company block — top left
     { field_name: 'Company Name',  field_type: 'Regular', x_pos: 0.50, y_pos: 0.12, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica-Bold', font_size: 10, font_bold: 1, field_text: null, line_thick: 1, visible: 1 },
     { field_name: 'Company Name2', field_type: 'Regular', x_pos: 0.50, y_pos: 0.30, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 9,  font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
@@ -227,6 +229,21 @@ if (!db.prepare("SELECT value FROM settings WHERE key = 'layout_reset_v1'").get(
   })();
 }
 
+// Migration: add Logo field to existing accounts that don't have one.
+(function addLogoField() {
+  const accounts = db.prepare('SELECT id FROM account').all();
+  const insertLogo = db.prepare(`
+    INSERT OR IGNORE INTO layout_fields
+      (account_id, field_name, field_text, font_name, font_size, font_bold,
+       field_type, line_thick, x_pos, y_pos, x_end_pos, y_end_pos, visible)
+    VALUES (?, 'Logo', NULL, 'Helvetica', 10, 0, 'Graph', 1, 0.10, 0.08, 0.45, 0.58, 1)
+  `);
+  for (const { id } of accounts) {
+    const existing = db.prepare("SELECT id FROM layout_fields WHERE account_id = ? AND field_name = 'Logo'").get(id);
+    if (!existing) insertLogo.run(id);
+  }
+})();
+
 // Migration: seed default layout fields for any account that has none (ongoing, idempotent).
 (function seedMissingLayoutFields() {
   const accounts = db.prepare('SELECT id FROM account').all();

src/services/pdfService.js

@@ -131,13 +131,21 @@ function generateCheckPdf(account, checks, fields) {
     const offX = (account.offset_right - account.offset_left);
     const offY = (account.offset_down - account.offset_up);
 
-    // Render checks in pages of 3; add a new page for each additional group
-    const pages = Math.ceil(checks.length / 3);
+    // Determine slot assignment based on check_position setting
+    const position = account.check_position || '3-per-page';
+    const SLOT_MAP = { top: 0, middle: 1, bottom: 2 };
+    const fixedSlot = SLOT_MAP[position]; // undefined for '3-per-page'
+    const checksPerPage = fixedSlot !== undefined ? 1 : 3;
+
+    const pages = Math.ceil(checks.length / checksPerPage);
     for (let page = 0; page < pages; page++) {
       if (page > 0) doc.addPage();
 
       for (let slot = 0; slot < 3; slot++) {
-      const check = checks[page * 3 + slot] || null;
+      // For fixed-slot mode, only render in the designated slot
+      if (fixedSlot !== undefined && slot !== fixedSlot) continue;
+      const checkIndex = fixedSlot !== undefined ? page : page * 3 + slot;
+      const check = checks[checkIndex] || null;
       const slotOriginY = slot * SLOT_HEIGHT_IN;
 
       // Helper: convert inches (relative to slot) to PDF points (absolute page)