Update Riptide sprint notes for January

Author: j1010001

agendas/2026/sprint-kickoff/Flow-Sprint-Kickoff-06-05-2026.md

@@ -103,10 +103,11 @@ Next sprint:
 ## Riptide [Jan]
 
 **Done Last Sprint**
-
-
+- Researched and discussed Reputation platform
+- Pivoted to validation research and delivered validation demo app
 
 **This Sprint**
+- Expanding the validation demo to collaboration demo