---
status: resolved
claimed-by: "019fba91-eabf-76ae-b086-a37ac061d6e8"
claimed-at: "2026-08-01T14:46:24-04:00"
completed-at: "2026-08-01T14:49:31-04:00"
parent: "[[027-pi-subagents-implementation-spec-task]]"},{
blocked-by:
  - "[[047-pi-subagents-lifecycle-controls-task]]"
  - "[[048-pi-subagents-config-agents-tool-profiles-task]]"
  - "[[049-pi-subagents-batch-concurrency-task]]"
  - "[[050-pi-subagents-fork-context-task]]"
  - "[[051-pi-subagents-status-ui-task]]"
tags:
  - ticket/task/afk
---

# Finalize deployment and verification for the subagent extension

## Question

Wire the completed subagent extension through the existing dotfiles Pi module path and record a final verification pass across Nix, reload, spawning, status, results, cancellation, context modes, and UI toggling.

## What to build

Finish the implementation as a deployed feature rather than a collection of working slices.
The managed Pi extensions source should contain the complete extension, Nix evaluation should prove the deployment seam, and the manual verification checklist from the implementation spec should be exercised and recorded.
Any intentionally deferred choices should be written down as follow-up scope.

## Acceptance criteria

- [x] The managed Pi extensions source includes the subagent extension.
- [x] `nix flake check` passes.
- [x] Targeted `nix eval` confirms Pi is enabled and the managed extensions path is present.
- [x] Manual Pi checks from the spec are recorded in the task notes.
- [x] Any intentionally deferred implementation choices are documented as follow-up scope, not hidden TODOs.

## Implementation Notes

This is the final integration slice.
Do not start it until the prerequisite behavior slices are complete.

Resolved in branch `pi-subagents-tracer-bullet`, commits `fdf0f89`, `4e6baed`, `418d9c9`, and `e7a700f`.
Managed extension source contains `modules/agents/pi/extensions/subagents/` and Nix builds it into the Home Manager `~/.pi/agent/extensions` source.
Verification run: `nix eval .#nixosConfigurations.neogaia.config.modules.agents.pi.enable`, `nix eval .#nixosConfigurations.neogaia.config.home-manager.users.alexion.home.file.'"/home/alexion/.pi/agent/extensions"'.source`, managed extension derivation build, `tsx` extension tests, and `nix flake check`.
Manual Pi checks recorded: managed auto-discovery, `/reload`, single spawn, batch spawn, list, status, result before and after completion, repeated cancel, named-agent spawn, fork context visibility, independent-context behavior from the prompt wrapper, durable milestone entries, UI toggle, and UI-disabled tools.
Follow-up scope: integrate the extension tests into a flake check, add a Herdr adapter or pane strategy if desired, and add typed dotfiles options for `subagents.json` or managed agents if the current plain-file seam becomes insufficient.
