Add Opus Advisor Strategy to Claude Code worker

[martinjms]

Summary

Enable the advisor strategy for the worker (Sonnet executor + Opus advisor). Waiting on Claude Code CLI to support advisor in headless mode.

Approaches (in order of preference)

1. CLI flag: --betas advisor-tool-2026-03-01 or --advisor opus
2. Stream-json: send /advisor opus as first message in session
3. Fallback: rebuild worker as direct SDK agent loop

Status

As of Claude Code v2.1.101, /advisor exists in interactive mode but not in --bare/--print mode. --betas rejects the advisor beta header. Check newer versions.

References

• ARCHITECTURE.md Module 6: Worker — Advisor Strategy TODO