- Implemented the full Fat Bottom Grille storefront and staff dashboard.

Highlights include configurable menus, specials, cart/checkout, taxes, 
customer accounts with email 2FA, newsletters, analytics, refunds, 
PDF/CSV exports, Square/Mailgun adapters, and optional MySQL migration.

See README.md for setup and production configuration. Verified 
PHP/JavaScript syntax, responsive layouts, registration, 2FA, checkout, 
dashboard workflows, settings persistence, and PDF generation.
Real Square, Mailgun, and MySQL connections require credentials/server 
access. Square implementation follows the official Payments API and 
Refunds API.

views/store/checkout.php

@@ -0,0 +1,98 @@
+<section class="page-hero page-hero-compact">
+    <div class="container">
+        <span class="eyebrow">Secure checkout</span>
+        <h1>Finish Your Order</h1>
+    </div>
+</section>
+
+<div class="container checkout-layout section">
+    <section class="checkout-main">
+        <form id="checkout-form" class="panel form-stack"
+            action="/checkout" method="post"
+            data-square-enabled="<?= $squareEnabled ? 'true' : 'false' ?>"
+            data-square-app-id="<?= e($squareAppId) ?>"
+            data-square-location-id="<?= e($squareLocationId) ?>">
+            <?= csrf_field() ?>
+            <input type="hidden" id="square-token" name="square_token" value="">
+            <div class="form-section">
+                <div class="form-section-heading">
+                    <span>1</span>
+                    <div>
+                        <h2>Who is picking up?</h2>
+                        <p>We will use this to confirm your order.</p>
+                    </div>
+                </div>
+                <div class="form-grid">
+                    <label>Full name
+                        <input type="text" name="customer_name" required autocomplete="name"
+                            value="<?= e($old['customer_name'] ?? $currentUser['full_name'] ?? '') ?>">
+                    </label>
+                    <label>Email address
+                        <input type="email" name="customer_email" required autocomplete="email"
+                            value="<?= e($old['customer_email'] ?? $currentUser['email'] ?? '') ?>">
+                    </label>
+                    <label>Phone number
+                        <input type="tel" name="customer_phone" required autocomplete="tel"
+                            value="<?= e($old['customer_phone'] ?? $currentUser['phone'] ?? '') ?>">
+                    </label>
+                    <label>Preferred pickup time
+                        <input type="time" name="pickup_time" value="<?= e($old['pickup_time'] ?? '') ?>">
+                    </label>
+                </div>
+                <label>Special instructions
+                    <textarea name="special_instructions" rows="3" placeholder="Sauce on the side, allergy note, pickup details..."><?= e($old['special_instructions'] ?? '') ?></textarea>
+                </label>
+            </div>
+            <div class="form-section">
+                <div class="form-section-heading">
+                    <span>2</span>
+                    <div>
+                        <h2>Payment</h2>
+                        <p><?= $squareEnabled ? 'Securely processed by Square.' : 'Demo payment mode is active until Square is enabled in Settings.' ?></p>
+                    </div>
+                </div>
+                <?php if ($squareEnabled): ?>
+                    <?php if ($squareAppId && $squareLocationId): ?>
+                        <div id="card-container" class="square-card"></div>
+                        <div id="card-errors" class="field-error" role="alert"></div>
+                    <?php else: ?>
+                        <div class="notice notice-error">Square is enabled, but the application or location ID is missing. Ask an administrator to finish the payment settings.</div>
+                    <?php endif; ?>
+                <?php else: ?>
+                    <div class="demo-payment">
+                        <span class="demo-payment-mark">D</span>
+                        <div>
+                            <strong>Demo payment</strong>
+                            <p>No card will be charged. Orders are recorded as paid for local testing.</p>
+                        </div>
+                    </div>
+                <?php endif; ?>
+            </div>
+            <button id="checkout-submit" class="button button-large button-block" type="submit"
+                <?= $squareEnabled && (!$squareAppId || !$squareLocationId) ? 'disabled' : '' ?>>
+                Pay <?= money($totals['total_cents']) ?> & Place Order
+            </button>
+        </form>
+    </section>
+    <aside class="order-summary">
+        <span class="eyebrow">Your order</span>
+        <div class="mini-order-list">
+            <?php foreach ($cart['items'] as $item): ?>
+                <div>
+                    <span><b><?= (int) $item['quantity'] ?>x</b> <?= e($item['name']) ?></span>
+                    <strong><?= money((int) $item['quantity'] * (int) $item['unit_price_cents']) ?></strong>
+                </div>
+            <?php endforeach; ?>
+        </div>
+        <dl>
+            <div><dt>Subtotal</dt><dd><?= money($totals['subtotal_cents']) ?></dd></div>
+            <?php foreach ($taxRates as $tax): ?>
+                <div><dt><?= e($tax['name']) ?> (<?= number_format((int) $tax['rate_basis_points'] / 100, 2) ?>%)</dt><dd>Included below</dd></div>
+            <?php endforeach; ?>
+            <div><dt>Tax</dt><dd><?= money($totals['tax_cents']) ?></dd></div>
+            <div class="summary-total"><dt>Total</dt><dd><?= money($totals['total_cents']) ?></dd></div>
+        </dl>
+        <p class="summary-note">Estimated ready time: <?= (int) $config->get('ordering.pickup_eta_minutes', 25) ?> minutes.</p>
+    </aside>
+</div>
+