v0.4.0

openheim v0.4.0 — Subagents

What's new

Subagents

Drop a Markdown profile in ~/.openheim/agents/{name}.md and the agent gains a delegate_task tool it can use to hand off self-contained work. Each subagent runs an isolated loop — its own message history, persona, and optionally its own model/provider and restricted tool set — sandboxed identically to the parent, and returns only its final answer.

Profiles support optional +++-delimited TOML frontmatter for description, model, provider, tools, and max_iterations, mirroring the skills format. See docs/subagents.md for the full guide.

Fixed

• Streaming retry — RetryClient previously skipped retry logic for streaming calls. Streaming requests are now retried with exponential backoff, but only before the first chunk reaches the caller — once tokens have been forwarded, mid-stream failures are returned as-is rather than replayed.

Breaking changes (library)

• config::resolve_client_and_config has been removed. Its "reuse the client unless the provider/model changed" logic is now exposed as config::client_for_config(target, baseline, baseline_llm).