Adds the four kickoff prompts that drove the 2026-05-04 whole-codebase
architecture audit (PM + DEV-A/B/C reviewers), the planning prompt
that converts the synthesis into three implementation plans, and the
PM + DEV-A/B/C kickoff prompts for executing those plans in parallel.
Also updates the existing v0.5.1-* prompts with the relay-server
fallback section that references the new tools/relay/call.py shim.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
