fix: replace Gazebo with desktop sim on Mars Yard; generalise FTC worlds reference

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: campey

_posts/2025-09-10-mars-yard.md

@@ -27,7 +27,7 @@ The flagship deployment is the **Cape Town Science Centre's Space Room** exhibit
 </blockquote>
 <script async src="//www.instagram.com/embed.js"></script>
 
-You don't need to be at the Science Centre to try it, either. A Gazebo simulation lets learners run rover code remotely before it executes on real hardware.
+You don't need to be at the Science Centre to try it, either. A desktop simulator lets learners run rover code locally before it executes on real hardware.
 
 ## Write Code, Get Back Video
 

_posts/2025-09-12-ftc.md

@@ -25,19 +25,7 @@ FIRST — For Inspiration and Recognition of Science and Technology — runs a f
 
 The **First Tech Challenge** is where CoderLevelUp focuses. Teams of high schoolers design, build, programme, and operate robots to compete in alliance-format matches — judged not just on performance but on outreach, engineering documentation, and gracious professionalism.
 
-And right now, two Western Cape teams are heading to the World Championship in Houston.
-
-## Texpand: 2024 World Champions
-
-**Texpand** (Team 26786) won the FTC World Championship in Houston in 2024. They're a Cape Town team - and they're going back.
-
-Their 2024 victory was more than a trophy. It unlocked R670,000 in additional funding and directly catalysed the formation of 17 new South African FTC teams. One championship win, seventeen new teams. That's the multiplier effect.
-
-## Autonova: Also Heading to Houston
-
-**Autonova** has also qualified for the 2026 FTC World Championship in Houston - a remarkable achievement. Two Western Cape teams at Worlds, in the same year.
-
-The FTC World Championship draws 85,000+ attendees from 58 countries. It's one of the largest youth engineering events on earth.
+South African teams qualify for the FTC World Championship each year — one of the largest youth engineering events on earth, drawing 85,000+ attendees from 58 countries.
 
 ## The Human Stories