Remove backend dependencies for standalone repo: drop cargo build from webhook, remove backend systemd unit, clean eslint config

scripts/install-systemd-services.sh

@@ -1,5 +1,5 @@
 #!/usr/bin/env bash
-# Installs/updates the tssbot-web systemd --user units and (re)starts them.
+# Installs/updates the tssbot-web and tssbot-webhook systemd --user units and (re)starts them.
 # Run this after cloning, and again any time a unit file under systemd/ changes.
 set -euo pipefail
 
@@ -7,16 +7,16 @@ repo_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 unit_dir="${HOME}/.config/systemd/user"
 mkdir -p "${unit_dir}"
 
-for unit in tssbot-web tssbot-webhook tssbot-backend; do
+for unit in tssbot-web tssbot-webhook; do
   ln -sf "${repo_dir}/systemd/${unit}.service" "${unit_dir}/${unit}.service"
 done
 
 systemctl --user daemon-reload
-systemctl --user enable --now tssbot-web.service tssbot-webhook.service tssbot-backend.service
+systemctl --user enable --now tssbot-web.service tssbot-webhook.service
 
 if [ "$(loginctl show-user "$(whoami)" -p Linger --value 2>/dev/null)" != "yes" ]; then
   echo "Linger is not enabled for $(whoami) — user services will stop when you log out."
   echo "Enable it with: sudo loginctl enable-linger $(whoami)"
 fi
 
-systemctl --user status --no-pager tssbot-web.service tssbot-webhook.service tssbot-backend.service
+systemctl --user status --no-pager tssbot-web.service tssbot-webhook.service