Verify automatic orchestration and compaction in CI

[JJ27]

What did you change, and why?

Keep temporary live verification separate from the integration changes in #996. This draft targets that PR's branch and changes only tests and their documentation.

Two real-agent journeys exercise Claude and Codex with ENABLE_SMART_ROUTER_ORCHESTRATOR=1. Each requests a review of three source modules without asking for subagents, requires completed native child work and a root report containing values read from all three files, performs native /compact, and repeats with different files. Both reviews require fresh workflow context. Codex delivers its compact hook before the next model request, so the follow-up review checks that delivery.

The journeys use the existing managed-config test lanes and real gateway and agent binaries. They check delegation and continuation, not the accuracy of review findings. There are no production-code or shared CUJ-fixture changes.

How do you know it works?

• 76 evidence-reader and integration-contract tests passed; both new live journeys collect.
• Repository lint, formatting, type checks, and diff checks passed.
• Production and skill files exactly match #996; the diff contains only five test/documentation files.
• Before the naming update, the Claude automatic-delegation/compaction journey passed on d4a505c. Codex hit model API 429 rate limits in both attempts, so its complete journey remains unverified. Results for the renamed revision are pending CI.

This is a temporary validation PR, not intended for merge.