v1.20.0

1.20.0

Minor Changes

• 7335a5f: Enable the tracked-subsession tools (spawn_subsession, list_subsessions, check_subsession, read_subsession, yield_to_subsessions) and the paired get_model_policy tool by default. The subsessions session-daemon setting now defaults to true; disable it with subsessions: false or PI_WEBUI_SUBSESSIONS=0. The new default applies after the session daemon on each machine restarts.

Patch Changes

• b5d85e0: Keep PI WEBUI's session accounting and history in step with Pi 0.87: project usage totals now include Pi's standalone usage entries (such as prompt-cache warming), the session tree labels the new context-edit, usage, and system entry kinds, and Pi's transcript-backed system prompt and tool updates stay out of the conversation view like they do in Pi's own chat.
• b5d85e0: Upgrade the supported Pi Coding Agent package set to the 0.87.x release series (0.87.1).