@weshipwork/pi-subagents mirror fork notes

This package is a minimal fork of @tintinweb/pi-subagents for pi-herd mirror mode.

The fork keeps Subagents executing inside the Delegator Pi process and adds only a read-only mirror observation seam:

• src/mirror.ts
  • createMirrorEventHub(...)
  • PiSubagentsMirrorService
  • snapshot/status/assistant text delta events
• src/index.ts
  • publishes the mirror service on globalThis.__piSubagentsMirrorService
  • emits snapshots/status at lifecycle points
  • emits assistant text deltas from existing spawn callbacks

Do not add Herdr hosting or mirror-pane interactivity here. pi-herd owns external mirror panes and consumes this service read-only.