refactor: update schedule and registration details for UCL 2026 summit

Signed-off-by: Alex Lovell-Troy <alex@lovelltroy.org>

Author: alexlovelltroy

content/events/Summits/2026/UCL26/_index.md

@@ -65,16 +65,12 @@ aliases = ["/events/summits/ucl-2026/", "/ucl26/"]
 
 ---
 
-## Registration
-
-Registration is required. **[Register on Pretix](https://pretix.eu/ARC/ochami-ucl-2026/)** — spots are limited, especially for the optional Day 0 at Cambridge.
-
----
-
 ## Sponsors
 
 We're grateful to our sponsors for supporting the OpenCHAMI Developer Summit. If your organization is interested in sponsoring, contact us at [contact@openchami.org](mailto:contact@openchami.org).
 
+Special thanks to CosmicLabs for hosting a dinner for summit attendees.
+
 ---
 
 > **We look forward to seeing you at UCL!**

content/events/Summits/2026/UCL26/schedule.md

@@ -55,7 +55,7 @@ contributors = ["Alex Lovell-Troy",]
 | 11:40–12:00 | UK/EU Growth Update for OpenCHAMI | Tom Green |
 | 12:00–12:20 | Virtual Multi-Node Testing with OpenStack | Stig Telfer |
 | 12:20–13:20 | Lunch | — |
-| 13:20–13:40 | Operations Talk: Site Bring-up and Baseline Practices | Speaker TBD |
+| 13:20–13:40 | Community Delevelopment and Discussion | Alex Lovell-Troy |
 | 13:40–14:00 | OpenCHAMI with Talos | Tiziano Mueller |
 | 14:00–14:20 | Operations Talk: Image Lifecycle and Recovery Workflow | Speaker TBD |
 | 14:20–14:40 | Operations Roundtable and Q&A | Panel |