Add missing JS coverage: designer save else branch, calculator default rates

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tests/js/billet-designer.test.js

@@ -133,6 +133,25 @@ describe('initBilletDesigner', () => {
         expect(fetchMock).not.toHaveBeenCalled()
     })
 
+    it('save includes non-checkbox input values in form data', () => {
+        const fetchMock = vi.fn().mockResolvedValue({ ok: true })
+        globalThis.fetch = fetchMock
+
+        document.body.innerHTML = `
+            <div id="billet-designer" data-preview-url="/preview" data-save-url="/save">
+                <input type="text" name="invitation_title" value="VIP Pass">
+                <iframe id="billet-preview-frame" src="/preview"></iframe>
+                <button id="billet-save-design"></button>
+            </div>
+        `
+
+        initBilletDesigner()
+        document.getElementById('billet-save-design').click()
+
+        const formData = fetchMock.mock.calls[0][1].body
+        expect(formData.get('invitation_title')).toBe('VIP Pass')
+    })
+
     it('save includes checkbox values in form data', () => {
         const fetchMock = vi.fn().mockResolvedValue({ ok: true })
         globalThis.fetch = fetchMock

tests/js/commission-calculator.test.js

@@ -15,6 +15,23 @@ describe('initCommissionCalculator', () => {
         expect(() => initCommissionCalculator()).not.toThrow()
     })
 
+    it('uses default stripe rate and fixed when not provided', () => {
+        document.body.innerHTML = `
+            <input type="number" id="billet_price" value="10">
+            <div id="commission-calculator" data-eticket-rate="0">
+                <span id="calc-price"></span>
+                <span id="calc-eticket"></span>
+                <span id="calc-stripe"></span>
+                <span id="calc-total"></span>
+                <span id="calc-net"></span>
+            </div>
+        `
+        initCommissionCalculator()
+
+        // Default stripe: 10 * 1.5% + 0.25 = 0.40
+        expect(document.getElementById('calc-stripe').textContent).toBe('- 0,40 \u20AC')
+    })
+
     function setupCalculator(eticketRate = '5', price = '') {
         document.body.innerHTML = `
             <input type="number" id="billet_price" value="${price}">