Every cookie was flagged Secure whenever NODE_ENV=production. Over
plain HTTP (single-host compose deploy without TLS) browsers silently
discard Secure cookies, so the access token, refresh token, and CSRF
cookie all vanished after login — producing 401 Unauthorized on every
GET and 403 "CSRF token missing or invalid" on every mutation.
Add COOKIE_SECURE to ApiEnv: optional boolean, falls back to
NODE_ENV === 'production' when unset. Controllers and middleware now
read env.COOKIE_SECURE instead of the NODE_ENV shortcut. The compose
file sets it to false by default with a comment to flip once TLS is in
front; HTTPS deployments can override via .env or drop the override to
pick up the secure default.