Bug: VirtualAppsActions actionsComponent not mounting on CnIndexPage index page

[rubenvdlinde]

Symptom

The Virtual apps index (`/apps/openbuilt/applications`) renders the generic CnIndexPage "+ Add Item" button + "Create Item" dialog instead of the custom `VirtualAppsActions` component that opens the four-step creation wizard.

Verified state

• `src/manifest.json` correctly sets `config.actionsComponent: "VirtualAppsActions"` on the VirtualApps page entry
• `src/customComponents.js` correctly imports + registers VirtualAppsActions
• The component file `src/components/VirtualAppsActions.vue` builds and renders correctly in isolation (Vitest mounting test passes)
• Browser DOM check: no `.ob-va-actions` element present anywhere on the index page

Hypothesis

nc-vue's CnIndexPage may not honor the `config.actionsComponent` prop on index pages — that pathway is documented for detail pages in the nc-vue CLAUDE.md (`actionsComponent: "ApplicationDetailActions"` on the VirtualAppDetail entry works correctly per smoke test). Index pages may need a different escape hatch (e.g. a `#actions` slot override or a different config key).

Repro

1. Apply PRs [1/8] refactor: split Application + ApplicationVersion (ADR-002 foundation) #58 → [8/8] fix(tests): stabilise 11 PHPUnit failures + ProductionVersionGuardListener runtime bug #65 (the chain)
2. `docker exec nextcloud php occ maintenance:repair && docker exec nextcloud apache2ctl graceful`
3. Navigate to `/apps/openbuilt/applications`
4. Click "+ Add Item"
5. Observe: generic "Create Item" dialog (not the wizard)

Likely fix

Either:

• Add a `#actions` slot to ApplicationCard's parent that mounts the custom component, OR
• Extend CnIndexPage in nc-vue to honor `config.actionsComponent` (per spec design intent), OR
• Replace the manifest pattern with a direct Vue route component that owns the index + Add button explicitly

Wizard spec: `openspec/changes/openbuilt-app-creation-wizard/specs/application-creation-wizard/spec.md` (REQ-OBWIZ-001).

Surfaced during the morning visual smoke pass on the chain.

[rubenvdlinde]

Closed by PR #70 merge to development. Verified via visual smoke.