The endpoint path is now /t/<8-char hash of APP_SECRET> instead of
static /t. Token is injected via data-e attribute on body, read by JS.
Server validates token on every hit, returns 404 if invalid.
Changes with each APP_SECRET = impossible to hardcode in a blocker.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
a139f86b90