Plan integration 7: Add the Web architect journey

[NetDevAutomate]

Parent

• Integrate Study Plans across Now, Web architect, and MCP #7 — Integrate Study Plans across Now, Web architect, and MCP

What to build

Add a Plan with architect journey to the Plans view using the existing live console, while retaining the complete manual form as a fallback.

Acceptance criteria

• The Plans view exposes a clear Plan with architect action.
• Successful launch navigates to the existing live console and labels planning purpose correctly.
• The architect receives interview questions, evidence seeds, existing-plan summaries, and optional brain dump.
• Refresh and reconnect preserve planning-purpose context.
• The manual create/edit/checkpoint interface remains fully functional.
• Exactly one addressed console and WebSocket handle the planning session.

Blocked by

• Plan integration 6: Launch planning-purpose agent sessions #13 — Plan integration 6: Launch planning-purpose agent sessions

Definition of Done

• Browser tests cover launch, fallback, conflict, reconnect, cancellation, and structured errors.
• A representative journey proves that no plan exists before the interview creates one.
• Accessibility, loading, empty, and failure states follow existing Web conventions.
• No duplicate terminal, ACP listener, or WebSocket is mounted.
• Web UI documentation and normative requirements are updated.