adapt ucode to handle codex app server

[lilly-luo]

before:

➜  ucode git:(lilly/fix-codex-app-server) ucode codex app

╭────────────────────────────────────╮
│ Launching Codex with Unity Gateway │
╰────────────────────────────────────╯
✔ Starting Codex
Error: --profile only applies to runtime commands and `codex mcp`: `codex`, `codex exec`, `codex review`, `codex resume`, `codex archive`, `codex delete`, `codex unarchive`, `codex fork`, `codex mcp`, `codex sandbox`, and `codex debug prompt-input`.

after:

➜  ucode git:(lilly/fix-codex-app-server) uv run ucode codex app

╭────────────────────────────────────╮
│ Launching Codex with Unity Gateway │
╰────────────────────────────────────╯
✔ Starting Codex
Opening Codex Desktop at /Applications/Codex.app...
Opening workspace /Users/lilly.luo/ucode...