Update deploy to use PM2, add .next.prev to gitignore

.gitea/workflows/deploy.yaml

@@ -251,7 +251,7 @@ jobs:
             if [ -n "${STAGE}" ] && [ -d "${STAGE}" ]; then
               git -C "${LIVE}" worktree remove --force "${STAGE}" 2>/dev/null || rm -rf "${STAGE}" || true
             fi
-            sudo systemctl start atom-nexst.service || true
+            pm2 start next || true
             exit 1
           }
           trap 'error_handler $LINENO' ERR
@@ -319,8 +319,8 @@ jobs:
 
           echo "Cutover: stop service (free DB connections), migrate, swap .next..."
           CUTOVER_STARTED=1
-          sudo systemctl stop atom-nexst.service || true
-          pkill -f 'next-server' || true
+          pm2 stop next || true
+          sleep 2
           # Give MariaDB a moment to reclaim the live pool.
           sleep 2
 
@@ -372,12 +372,13 @@ jobs:
 
           sudo chown -R www-data:www-data "${LIVE}"
 
-          echo "Starting systemd service..."
-          sudo systemctl start atom-nexst.service
+          echo "Starting PM2..."
+          pm2 start next --update-env || pm2 restart next --update-env
 
-          sleep 2
-          if ! systemctl is-active --quiet atom-nexst.service; then
-            echo "ERROR: atom-nexst.service failed to start!" >&2
+          sleep 3
+          if ! pm2 show next 2>/dev/null | grep -q 'online'; then
+            echo "ERROR: PM2 next failed to start!" >&2
+            pm2 logs next --lines 20 --nostream >&2 || true
             exit 1
           fi
 
@@ -397,7 +398,7 @@ jobs:
           if [ "${HEALTH_OK}" != "1" ]; then
             echo "ERROR: Health check failed after deploy (${HEALTH_URL})" >&2
             echo "Last body: ${BODY:-<empty>}" >&2
-            journalctl -u atom-nexst.service -n 40 --no-pager >&2 || true
+            pm2 logs next --lines 40 --nostream >&2 || true
             exit 1
           fi