events: add v1.6.1-aio.15 (promo codes enforced)

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EYwoAkZZmXMMmaBp4WGUBo

extensions.json

@@ -295,6 +295,16 @@
             "archive": "https://git.atitlan.io/aiolabs/events/archive/v1.6.1-aio.14.zip",
             "hash": "8a4cf2205c6bedfc2ad29456227dc32258b5590ff55edfd38cdfce1f2092dafb"
         },
+        {
+            "id": "events",
+            "repo": "https://git.atitlan.io/aiolabs/events",
+            "name": "AIO Events",
+            "version": "1.6.1-aio.15",
+            "short_description": "Promo codes enforced: active flag respected, max_uses with used_count derived from paid tickets, codes no longer exposed on public event records, anonymous POST /api/v1/promo/validate/{event_id} price preview, one pricing path for preview/invoice/Stripe, Stripe metadata.promo_code; admin editor shows max uses + usage.",
+            "icon": "https://git.atitlan.io/aiolabs/events/raw/branch/main/static/image/events.png",
+            "archive": "https://git.atitlan.io/aiolabs/events/archive/v1.6.1-aio.15.zip",
+            "hash": "b22b76ccdabc418bd060ab1d78ccb2c444aeb0de9d8c30f23f8ca5a8377ed941"
+        },
         {
             "id": "nostrclient",
             "repo": "https://git.atitlan.io/aiolabs/nostrclient",