Add run-centric UI product audit contract

[c-mongan]

Summary

• add an explicit run-centric UI contract to product audit
• keep the dashboard UX validator exposing the run-centric release gate
• move the Run-Centric UI section from required work to implemented evidence

Verification

• npm --prefix agentops-cli test
• npm --prefix actioner test
• node agentops-cli/src/index.js product audit --json
• node agentops-cli/src/index.js demo verify --runs 50 --json
• node -c agentops-cli/src/commands/dashboard.js
• node -c agentops-cli/src/commands/product.js
• git diff --check