Change talk to Rob Stevenson (#15)

* Change talk to Rob Stevenson

Change to Rob's Full-Stack Flexing with Ruby on Rails talk

* Create 2026-01-26-full-stack-flex.md

* Add post for Full-Stack Flexing with Ruby on Rails

Add post for Full-Stack Flexing with Ruby on Rails

* Delete _posts/2026/2026-01-26-rails-release-report.md

Author: RobertStevenson

_posts/2026/2026-01-26-full-stack-flex.md

@@ -0,0 +1,12 @@
+---
+layout: post
+title: Full-Stack Flexing with Ruby on Rails' 
+date: 2026-01-26
+link: 
+speakers:
+- name: Rob Stevenson
+  linkedin: rob-stevenson-022555
+  github: robertstevenson
+---
+
+Let's talk about what makes Ruby on Rails able to Full-Stack Flex! This talk was given at CodeMash 2026 and I'll talk about bringing Ruby and Rails back to CodeMash!