Superadmins can currently only edit an existing announcement via the Edit button on the start-page announcement alert (FR-3223). When no announcement is set, the alert does not render, so there is no WebUI entry point to create the first announcement (or re-enable a disabled one).
Why This Work is Needed
A superadmin should be able to create and manage the system announcement entirely from the WebUI, without resorting to etcd or the CLI, even when no announcement currently exists.
Expected Outcomes
- The admin Maintenance page (superadmin-only) gains a 'System announcement' settings row.
- Clicking it opens the existing announcement edit modal (reused), so a superadmin can create, edit, enable, or disable the announcement regardless of whether one already exists.
- Saving updates the announcement via the existing manager API and refreshes the announcement state.
Stacked on FR-3223.
JIRA Issue: FR-3224
Superadmins can currently only edit an existing announcement via the Edit button on the start-page announcement alert (FR-3223). When no announcement is set, the alert does not render, so there is no WebUI entry point to create the first announcement (or re-enable a disabled one).
Why This Work is Needed
A superadmin should be able to create and manage the system announcement entirely from the WebUI, without resorting to etcd or the CLI, even when no announcement currently exists.
Expected Outcomes
Stacked on FR-3223.
JIRA Issue: FR-3224