fix: skip build if standalone exists; survive SSH drops

- Screen tip added to header
- Skip npm ci + next build if .next/standalone/server.js exists
- Skip systemd service creation if unit exists (restart instead)
- Close else/fi properly for systemd block
- Re-run after SSH drop picks up where it left off

install.sh

@@ -3,7 +3,9 @@ set -euo pipefail
 
 # ──────────────────────────────────────────────
 #  worst-scan-web — Direct installer (no Docker)
-#  Usage: bash <(curl -fsSL https://gitea.cbcren.online/renato97/worst-scan-web/raw/branch/main/install.sh)
+#  Usage:
+#    screen -S worst-scan       # recommended — survives SSH drops
+#    bash <(curl -fsSL https://gitea.cbcren.online/renato97/worst-scan-web/raw/branch/main/install.sh)
 # ──────────────────────────────────────────────
 
 REPO_URL="https://gitea.cbcren.online/renato97/worst-scan-web.git"
@@ -134,30 +136,42 @@ fi
 mkdir -p "$INSTALL_DIR/data"
 log "Data directory ready"
 
-# ── Build ────────────────────────────────────────
+STANDALONE_DIR="$INSTALL_DIR/.next/standalone"
+
+# ── Build (skip if already built) ──────────────────
+if [ -f "$STANDALONE_DIR/server.js" ]; then
+  info "Build already exists — skipping"
+else
   info "Installing npm dependencies..."
   cd "$INSTALL_DIR"
   npm ci
   log "Dependencies installed"
 
   info "Building Next.js app (this may take a few minutes)..."
+  info "Tip: run in 'screen -S worst-scan' to survive SSH drops"
   npm run build
   log "Build complete"
 
-STANDALONE_DIR="$INSTALL_DIR/.next/standalone"
-
   # Ensure static files are copied
   if [ ! -d "$STANDALONE_DIR/.next/static" ]; then
     mkdir -p "$STANDALONE_DIR/.next"
     cp -r "$INSTALL_DIR/.next/static" "$STANDALONE_DIR/.next/static"
   fi
   cp -r "$INSTALL_DIR/public" "$STANDALONE_DIR/public" 2>/dev/null || true
+fi
 
 # ── systemd service ──────────────────────────────
 SERVICE_NAME="worst-scan-web"
 APP_USER="$USER"
 APP_HOME="$HOME"
 
+if [ -f "/etc/systemd/system/$SERVICE_NAME.service" ]; then
+  info "systemd service already exists — restarting"
+  sudo systemctl restart "$SERVICE_NAME"
+  sudo systemctl enable "$SERVICE_NAME" 2>/dev/null || true
+  log "systemd service $SERVICE_NAME restarted"
+else
+  info "Creating systemd service..."
   sudo tee "/etc/systemd/system/$SERVICE_NAME.service" > /dev/null <<SYSTEMD
 [Unit]
 Description=worst-scan-web
@@ -183,7 +197,8 @@ SYSTEMD
   sudo systemctl daemon-reload
   sudo systemctl enable "$SERVICE_NAME"
   sudo systemctl restart "$SERVICE_NAME"
-log "systemd service $SERVICE_NAME started"
+  log "systemd service $SERVICE_NAME created and started"
+fi
 
 # ── Caddy reverse proxy ──────────────────────────
 CADDYFILE="/etc/caddy/Caddyfile"