[codex] Add native mobile composer and markdown - #3101

Bugbot Analysis Progress (34s elapsed)

✅ Gathered PR context (7s)
✅ Completed bug detection (22s)
✅ Posted analysis results (5s)

Final Result: Bugbot completed review - no issues found. 3 previously reported issues remain unresolved.

Request ID: serverGenReqId_6b574f7f-d5d2-4569-ae81-c2acfb13a110