Thinner check lines; second signature line toggle

- Halve all check line thicknesses (line_thick * 0.5)
- Add second_signature column to account table with runtime migration
- Account settings toggle: enables a second signature line drawn 0.25"
  above the primary signature line, matching its width and thickness

public/css/style.css

@@ -305,6 +305,8 @@ td {
   color: var(--text-muted);
 }
 .form-group.required label::after { content: ' *'; color: var(--danger); }
+.form-group-check { flex-direction: row; align-items: center; }
+.form-group-check label { text-transform: none; font-weight: normal; font-size: 12px; letter-spacing: 0; cursor: pointer; display: flex; align-items: center; gap: 6px; }
 
 .form-group input {
   border: 1px solid var(--border);

public/index.html

@@ -346,6 +346,11 @@
           </div>
         </div>
 
+        <p class="settings-section-label">Signature</p>
+        <div class="form-group form-group-check">
+          <label><input type="checkbox" id="as-second-sig" name="second_signature"> Add second signature line (0.25&quot; above primary)</label>
+        </div>
+
         <p class="settings-section-label">Logo</p>
         <div class="form-group">
           <label for="as-logo">Upload new logo</label>

public/js/app.js

@@ -572,6 +572,7 @@ function openAccountSettings() {
   f.elements.offset_right.value = a.offset_right || 0;
   f.elements.offset_up.value    = a.offset_up    || 0;
   f.elements.offset_down.value  = a.offset_down  || 0;
+  document.getElementById('as-second-sig').checked = !!a.second_signature;
 
   document.getElementById('as-logo').value = '';
   document.getElementById('as-logo-preview').hidden = true;
@@ -608,8 +609,9 @@ async function saveAccountSettings() {
     offset_left:    parseFloat(f.elements.offset_left.value)  || 0,
     offset_right:   parseFloat(f.elements.offset_right.value) || 0,
     offset_up:      parseFloat(f.elements.offset_up.value)    || 0,
-    offset_down:    parseFloat(f.elements.offset_down.value)  || 0,
-    logo_data:      acctSettings.logoData || null,
+    offset_down:      parseFloat(f.elements.offset_down.value)  || 0,
+    second_signature: document.getElementById('as-second-sig').checked ? 1 : 0,
+    logo_data:        acctSettings.logoData || null,
   };
 
   if (!payload.company1) {

src/app.js

@@ -39,7 +39,7 @@ app.put('/api/account/:id', (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,
+    logo_data, second_signature,
   } = req.body;
 
   if (!company1 || !routing_number || !account_number) {
@@ -52,6 +52,7 @@ app.put('/api/account/:id', (req, res) => {
       bank_name = ?, bank_info1 = ?, bank_info2 = ?, bank_info3 = ?, transit_code = ?,
       routing_number = ?, account_number = ?,
       offset_left = ?, offset_right = ?, offset_up = ?, offset_down = ?,
+      second_signature = ?,
       logo_data = CASE WHEN ? IS NOT NULL THEN ? ELSE logo_data END,
       updated_at = datetime('now')
     WHERE id = ?
@@ -61,6 +62,7 @@ app.put('/api/account/:id', (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,
     logo_data || null, logo_data || null,
     req.params.id
   );
@@ -68,7 +70,7 @@ app.put('/api/account/:id', (req, res) => {
   res.json(db.prepare(
     'SELECT id, bank_name, bank_info1, bank_info2, bank_info3, transit_code, ' +
     'routing_number, account_number, current_check_no, ' +
-    'company1, company2, company3, company4, check_position FROM account WHERE id = ?'
+    'company1, company2, company3, company4, check_position, second_signature FROM account WHERE id = ?'
   ).get(req.params.id));
 });
 
@@ -78,7 +80,7 @@ app.get('/api/account/:id', (req, res) => {
   const account = db.prepare(
     'SELECT id, bank_name, bank_info1, bank_info2, bank_info3, transit_code, ' +
     'routing_number, account_number, current_check_no, ' +
-    'company1, company2, company3, company4, check_position FROM account WHERE id = ?'
+    'company1, company2, company3, company4, check_position, second_signature FROM account WHERE id = ?'
   ).get(req.params.id);
   if (!account) return res.status(404).json({ error: 'Account not found.' });
   res.json(account);

src/db/database.js

@@ -93,6 +93,12 @@ if (!lfInfo.some(c => c.name === 'account_id')) {
   `);
 }
 
+// Migration: add second_signature column to account
+const acctInfo = db.prepare('PRAGMA table_info(account)').all();
+if (!acctInfo.some(c => c.name === 'second_signature')) {
+  db.exec('ALTER TABLE account ADD COLUMN second_signature INTEGER NOT NULL DEFAULT 0');
+}
+
 // Create account_id indexes unconditionally (safe after migrations have run)
 db.exec(`
   CREATE INDEX IF NOT EXISTS idx_checks_account ON checks(account_id);

src/db/schema.sql

@@ -23,6 +23,7 @@ CREATE TABLE IF NOT EXISTS account (
   company4          TEXT,
   logo_data         TEXT,
   signature_data    TEXT,
+  second_signature  INTEGER NOT NULL DEFAULT 0,
   blank_stock       INTEGER NOT NULL DEFAULT 1,
   check_position    TEXT NOT NULL DEFAULT '3-per-page',
   created_at        TEXT NOT NULL DEFAULT (datetime('now')),

src/services/pdfService.js

@@ -159,7 +159,7 @@ function generateCheckPdf(account, checks, fields) {
             const endPos = pt(field.x_end_pos, field.y_end_pos);
             doc.moveTo(pos.x, pos.y)
                .lineTo(endPos.x, endPos.y)
-               .lineWidth(field.line_thick || 1)
+               .lineWidth((field.line_thick || 1) * 0.5)
                .stroke('#000000');
             break;
           }
@@ -211,6 +211,21 @@ function generateCheckPdf(account, checks, fields) {
         }
       }
 
+      // --- Second signature line ---
+      if (account.second_signature) {
+        const sigLine = bodyFields.find(
+          f => f.field_type === 'Line' && f.field_name.toLowerCase().includes('signature')
+        );
+        if (sigLine) {
+          const p1 = pt(sigLine.x_pos,     sigLine.y_pos     - 0.25);
+          const p2 = pt(sigLine.x_end_pos, sigLine.y_end_pos - 0.25);
+          doc.moveTo(p1.x, p1.y)
+             .lineTo(p2.x, p2.y)
+             .lineWidth((sigLine.line_thick || 1) * 0.5)
+             .stroke('#000000');
+        }
+      }
+
       // --- MICR line ---
       const micrLine = formatMicrLine(account.routing_number, account.account_number, check.check_no);
       const micrPos = pt(0.3, MICR_Y_IN);