Why: RDM agent deploy left workbench htdocs unserved (prompt-only), so
environments like dev silently offered API-only 404 pages after a source
switch; static first-start also misclassified http.server as dead when
pidcheck was unset.
Evidence: CMD="make test-governance" make evidence (200 ok, 1 skipped; SELF).
Impact: rdm deploy auto-starts <name>web and asserts UI 200; cross-kind
redeploy needs --allow-source-switch; list/info flag missing workbench.
Refs: .task/feature-svc-rdm-ui-gate.md; docs/svc.md §5.4
Co-authored-by: Cursor <cursoragent@cursor.com>