events: add v1.6.1-aio.6 (monotonic created_at on NIP-52 republish)

New entry alongside aio.5 (not in place) so instances on the prior
version stay resolvable. Fixes the live ticket-count stall: a same-second
republish no longer ties created_at and gets dropped by relays.
aiolabs/events#26 / #27. sha256 of the v1.6.1-aio.6.zip archive pinned.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

extensions.json

@@ -195,6 +195,16 @@
             "archive": "https://git.atitlan.io/aiolabs/events/archive/v1.6.1-aio.5.zip",
             "hash": "01c6e0abc0f1477fd6e517cce6dfc2bc16a0acec746dfdb4a5191f61464f6f9f"
         },
+        {
+            "id": "events",
+            "repo": "https://git.atitlan.io/aiolabs/events",
+            "name": "AIO Events",
+            "version": "1.6.1-aio.6",
+            "short_description": "Monotonic created_at on NIP-52 republish: a same-second republish (e.g. two ticket sales) no longer ties created_at and get dropped by relays, so clients' open subscriptions receive live ticket-count updates without a reload.",
+            "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.6.zip",
+            "hash": "7fcc13a0882066499ead6afb9be62d42edf5aa2eae1167ae99be3e2feb8aeec6"
+        },
         {
             "id": "nostrclient",
             "repo": "https://git.atitlan.io/aiolabs/nostrclient",