Guards the submenu-before-parent 404 class in the deploy gate. QA: APPROVE-W-P2 qa-reviews/peptide-e2e/2026-06-12-113bb17.md Agent-Session: cto-board-404-hotfix-merge-20260612
20 tests across 5 files covering all plugin surfaces on staging: - Homepage load and PHP fatal detection - Reconstitution Calculator shortcode + math - Peptide Search AI widget + AJAX response - Admin: all plugins active, PSA + PRAutoBlogger settings pages - REST API: prc/v1/presets, peptides/v1/search, compounds, CPT types Staging shortcode pages: /reconstitution-calculator/ - [prc_calculator] /search-peptides/ - [peptide_search] /peptide-directory/ - [peptide_directory] GHA workflow: smoke.yml supports manual dispatch + workflow_call for use as a deploy gate from plugin repos.
