0.5.0 — the plugin surface

0.5.0 — the plugin surface

AgentDescent as a plugin for Claude Code, Codex, OpenCode and DeepSeek
Harness: a shared skill, an MCP server over doctor / plan / start / status /
show / apply / cancel / resume, a run store so a run started from an agent can
be inspected from a shell, and plugin as an evolvable kind.

Merging is the default now wherever a model is reachable to merge with, so
several workers merge their edits rather than one winning and the rest being
dropped.