www/remark42 1.18.0_1 FreeBSD

While here, bring the rc script in line with upstream's options: - Rename remark_disable_fancy_html_formatting to remark_disable_fancy_text_formatting; the old name exported a variable the server does not read. - Rename the remark_auth_enable and remark_auth_email_subject defaults to remark_auth_email_enable and remark_auth_email_subj, the names that are actually exported. - Add remark_trusted_proxy, remark_auth_ttl_jwt, remark_auth_ttl_cookie, remark_auth_send_jwt_header, remark_auth_microsoft_tenant, remark_auth_custom_*, remark_telegram_api_url and remark_smtp_helo_host. - Default remark_avatar_uri and remark_ssl_acme_location to the data directory instead of a path relative to the working directory.

- Switch to USES=npm:pnpm so the frontend is built from upstream's pnpm-lock.yaml (frozen, offline, no lifecycle scripts) instead of an npm-resolved dependency set. - Follow the default Node.js version instead of hardcoding node24. - Relax the Go requirement to 1.27+. - Fetch the prefetch distfiles from MASTER_SITES before the framework regenerates them, and recompress the node modules archive with xz. - Drop the TypeScript patch, no longer needed with upstream's locked dependency versions. - Remove unused variables and reorder per portclippy.

Since 1.17.0 the server fills the {% REMARK_URL %} placeholder into the embedded frontend at serve time, using the REMARK_URL it was started with. The port was still substituting the placeholder with http://127.0.0.1:8080 before embedding, which left nothing for the server to fill in, so the widget pointed at an unreachable host whenever a page omitted remark_config.host. - Drop the build-time substitution and the REMARK_URL make variable; remark_url in rc.conf now reaches the frontend as well. - Document remark_remark_web_root in the rc script.