♻️ Migrate codex from npm to bun and add install recipe

Author: jefftriplett

home/.justfiles/codex.justfile

@@ -21,14 +21,14 @@ justfile := justfile_directory() + "/.justfiles/codex.justfile"
 @config:
     command codex --config
 
-# check for outdated Codex npm package
-@outdated:
-    npm outdated @openai/codex
+# install Codex CLI
+@install:
+    bun install -g @openai/codex
 
 # update Codex CLI to the latest version
 @upgrade:
     just --justfile {{ justfile }} version
-    npm install -g @openai/codex
+    bun install -g @openai/codex
     just --justfile {{ justfile }} version
 
 # see Codex CLI usage

home/.justfiles/llm.justfile

@@ -43,11 +43,11 @@ mod pi-coding-agent 'pi-coding-agent.justfile'
 outdated:
     #!/usr/bin/env bash
     echo "==> Checking npm packages..."
-    npm outdated -g @github/copilot @openai/codex 2>/dev/null || true
+    npm outdated -g @github/copilot 2>/dev/null || true
 
     echo ""
     echo "==> Checking bun packages..."
-    for pkg in clawdbot clawdhub cc-x10ded happy-coder moltbot @mariozechner/pi-coding-agent; do
+    for pkg in @openai/codex clawdbot clawdhub cc-x10ded happy-coder moltbot @mariozechner/pi-coding-agent; do
         installed=$(bun pm ls -g 2>/dev/null | grep "$pkg" | sed 's/.*@//' | head -1)
         latest=$(npm view "$pkg" version 2>/dev/null)
         if [ -n "$installed" ] && [ -n "$latest" ]; then