Module plugin 

In-process plugin host.

Loads .wasm plugins via Extism, validates their manifests, exposes the host-fn surface from the design spec (see docs/superpowers/specs/2026-05-18-hm-local-first-redesign-design.md §3.3).

Re-exports

pub use host::LoadedPlugin;

pub use registry::PluginRegistry;

pub use registry::RegistryConfig;

Modules

embedded

Embedded plugin bytes. Compiled by build.rs.

host

Thin wrapper around extism::Plugin instances loaded into a per-plugin pool. Concurrent invocations from chain tasks acquire a pool slot rather than blocking on a single plugin instance.

host_fns

All host functions exported to plugins. The exhaustive list lives in the design spec §3.3; this file is the single source of truth for which fn names exist and what types they accept.

install

Implementation of hm plugin install <source> --pin <sha256>.

manifest

Validates plugin manifests as they’re loaded.

paths

Filesystem locations the plugin host inspects.

pool

Instance pool for a loaded plugin.

registry

Discovers .wasm plugins under the user and project plugin dirs, validates each manifest, and builds a capability index used by the dispatcher.

signal

Bridges OS signals to the orchestrator’s CancellationToken.