feat: add SQL query tool, platform debug, loyalty settings, and multi-module improvements

- Add admin SQL query tool with saved queries, schema explorer presets,
  and collapsible category sections (dev_tools module)
- Add platform debug tool for admin diagnostics
- Add loyalty settings page with owner-only access control
- Fix loyalty settings owner check (use currentUser instead of window.__userData)
- Replace HTTPException with AuthorizationException in loyalty routes
- Expand loyalty module with PIN service, Apple Wallet, program management
- Improve store login with platform detection and multi-platform support
- Update billing feature gates and subscription services
- Add store platform sync improvements and remove is_primary column
- Add unit tests for loyalty (PIN, points, stamps, program services)
- Update i18n translations across dev_tools locales

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/modules/loyalty/static/store/js/loyalty-terminal.js

@@ -191,7 +191,11 @@ function storeLoyaltyTerminal() {
             this.processing = true;
 
             try {
-                if (this.pendingAction === 'earn') {
+                if (this.pendingAction === 'stamp') {
+                    await this.addStamp();
+                } else if (this.pendingAction === 'redeemStamps') {
+                    await this.redeemStamps();
+                } else if (this.pendingAction === 'earn') {
                     await this.earnPoints();
                 } else if (this.pendingAction === 'redeem') {
                     await this.redeemReward();
@@ -216,6 +220,30 @@ function storeLoyaltyTerminal() {
             }
         },
 
+        // Add stamp
+        async addStamp() {
+            loyaltyTerminalLog.info('Adding stamp...');
+
+            await apiClient.post('/store/loyalty/stamp', {
+                card_id: this.selectedCard.id,
+                staff_pin: this.pinDigits
+            });
+
+            Utils.showToast('Stamp added!', 'success');
+        },
+
+        // Redeem stamps
+        async redeemStamps() {
+            loyaltyTerminalLog.info('Redeeming stamps...');
+
+            await apiClient.post('/store/loyalty/stamp/redeem', {
+                card_id: this.selectedCard.id,
+                staff_pin: this.pinDigits
+            });
+
+            Utils.showToast('Stamps redeemed! Reward earned.', 'success');
+        },
+
         // Earn points
         async earnPoints() {
             loyaltyTerminalLog.info('Earning points...', { amount: this.earnAmount });