Adds two new tool categories — billing (10 tools) and legal_aid (6 tools)
— so Shira can drive the full Green Invoice flow: list unbilled activities,
manage charges (approve/cancel/calculate), build draft invoices from
activities, sync to Green Invoice, plus the legal-aid sub-flow (proforma,
mark-submitted, monthly 320 wrap-up, prepare-email, resubmit rejected).
Wires both registrars into agent_runner with allowed_toolsets gating, and
extends TOOL_RULES so Shira (a) shows draft totals before creating, (b)
treats send_invoice_to_green_invoice as irreversible and demands explicit
confirmation, and (c) never marks a legal-aid proforma as submitted
without an explicit request number from the user.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
