Add Codex example output to README

Author: kylecarbs

README.md

@@ -19,7 +19,24 @@ claude plugin marketplace add coder/skills
 claude plugin install coder-skills@coder-skills
 ```
 
-After installing, ask your agent to install or set up Coder.
+After installing, ask your agent to install or set up Coder:
+
+```
+╭────────────────────────────────────────────────────╮
+│ >_ OpenAI Codex (v0.130.0)                         │
+│                                                    │
+│ model:     gpt-5.5 xhigh   fast   /model to change │
+│ directory: ~/projects/coder/skills                 │
+╰────────────────────────────────────────────────────╯
+
+› setup coder
+
+• I’ll use the setup skill because this is a first-time Coder deployment/bootstrap request. I’m going to read its workflow, then I’ll
+  check the local repo context so I can choose the least surprising setup path.
+
+• Explored
+  └ Read SKILL.md (setup skill)
+```
 
 ## License