feat(server): bundle Codex and OpenCode binaries instead of requiring global installs

packages/server/package.json

@@ -62,6 +62,7 @@
   "dependencies": {
     "@ai-sdk/openai": "2.0.52",
     "@anthropic-ai/claude-agent-sdk": "^0.2.11",
+    "@openai/codex": "^0.114.0",
     "@deepgram/sdk": "^3.4.0",
     "@getpaseo/relay": "0.1.25",
     "@lezer/common": "^1.5.0",
@@ -87,6 +88,7 @@
     "node-pty": "1.2.0-beta.11",
     "onnxruntime-node": "^1.23.0",
     "openai": "^4.20.0",
+    "opencode-ai": "^1.2.24",
     "pino": "^10.2.0",
     "pino-pretty": "^13.1.3",
     "qrcode": "^1.5.4",