chore: cycle challenges for post-March meeting

challenges.md

@@ -9,31 +9,31 @@ Welcome to our monthly 3D printing challenges! Each month features a unique them
 
 ## Active Challenge
 
-### February 2026: "Bring Your Best"
+### March 2026: "Bring an Experiment"
 
-**Theme**: What you can do! Bring your best work, favorite model, or proudest print.
+**Theme**: Try something new, crazy, or wild! Bring in an experiment.
 
 **Key Details**:
 
-- **Model**: Your absolute favorite model or project
-- **Goal**: Share the "Why" behind the print, the challenges overcome, and what makes it special.
-- **Voting**: Group vote for favorite entry
+- **Model**: Any experimental print
+- **Goal**: Share what you tried, why you tried it, and if it worked or failed.
+- **Voting**: Group vote for favorite experimental attempt
 
 **[View Full Challenge Details](https://meetup.fargo3d.com/Fargo3d/3DPrintMeetup/wiki/Current-Challenge)**
 
 ## Upcoming Challenge
 
-### March 2026: "Bring an Experiment"
+### April 2026: "[Theme TBD]"
 
-**Status**: Announced in March 2026
+**Status**: Planning in progress
 
 **Expected Timeline**:
 
-- **Announcement**: March meeting (March 2026)
-- **Submission Period**: April 2026
-- **Judging**: April 2026
+- **Announcement**: April meeting (April 2026)
+- **Submission Period**: May 2026
+- **Judging**: May 2026
 
-**[View Challenge Placeholder](./challenges/March-2026/readme.md)**
+**[View Challenge Placeholder](./challenges/April-2026/readme.md)**
 
 ## Challenge Archive