- Site set Vitecset: new bool setting vitec.ssr.enabled (default off,
backend switch under Site Management > Settings > VITEC Settings)
- SsrFlagService derives var/vitec-ssr-on.flag from the setting;
SyncSsrFlag middleware (frontend + backend) re-syncs per request
because TYPO3 v14 fires no event on site settings save;
vitec:ssr-flag CLI command for status/--sync
- public/.htaccess: flag-gated block proxies page requests [P] to
https://vitec-ssr.evomedien.de (mod_proxy incl. https target verified
on this host 2026-11-09), same exclusions as the SPA fallback block;
completely inert while the flag file is absent
- Emergency off without TYPO3: delete var/vitec-ssr-on.flag
- Tested end to end: flag on -> pages proxied to VPS Caddy (502 while
the SSR node is not deployed yet), /_json untouched; flag off ->
SPA shell exactly as before
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
