The eval workflow was missing --ci, causing it to try Docker Compose
lifecycle in CI (which fails because there's no .env file). The --ci
flag skips Docker and assumes services are already running or uses
native execution.
New showcase_eval_check.yml creates a Check Run with "Run Showcase
Eval" action button on every PR. Modified showcase_eval.yml adds
workflow_dispatch trigger with dispatch-gate job, Check Run update
in post-result, and devops bot token for Checks API calls.
PR #4449 removed the eval tier system while unaware #4448 had just
merged. Restoring orchestrator, matrix, scope, config, GHA workflow,
and CLI wiring with all 8 CR fixes intact.
Jordan Ritter