Bundle a deepagents project for deployment.
Reads the canonical project layout:
<project>/
deepagents.toml # required — agent + sandbox config
AGENTS.md # required — system prompt + seeded memory
.env # optional — environment variables
mcp.json # optional — HTTP/SSE MCP servers
skills/ # optional — auto-seeded into skills namespace
...and writes everything langgraph deploy needs to a build directory.