feat: Add optional system optimizations to install script, refine cron job setup, and update related documentation.

demo/install.sh

@@ -60,20 +60,22 @@ echo "✓ Scripts are executable"
 touch "$LOG_FILE" 2>/dev/null || true
 echo "✓ Log file: $LOG_FILE"
 
-# Set up cron job
-CRON_JOB="* * * * * $CAPTURE_SCRIPT >> $LOG_FILE 2>&1"
+# Set up cron job (script handles its own logging, no redirect needed)
+CRON_JOB="* * * * * $CAPTURE_SCRIPT"
 
 echo ""
 echo "Setting up cron job for 1 picture per minute..."
 
 # Check if cron job already exists
 if crontab -l 2>/dev/null | grep -q "$CAPTURE_SCRIPT"; then
-    echo "⚠ Cron job already exists, skipping"
+    echo "⚠ Cron job already exists, updating..."
+    # Remove old entry and add new one
+    (crontab -l 2>/dev/null | grep -v "$CAPTURE_SCRIPT"; echo "$CRON_JOB") | crontab -
 else
     # Add to crontab
     (crontab -l 2>/dev/null || true; echo "$CRON_JOB") | crontab -
-    echo "✓ Cron job added"
 fi
+echo "✓ Cron job configured"
 
 echo ""
 echo "=== Installation Complete ==="
@@ -86,4 +88,33 @@ echo "  Test capture:  $CAPTURE_SCRIPT --test"
 echo "  Run manually:  $CAPTURE_SCRIPT"
 echo "  Uninstall:     ${SCRIPT_DIR}/uninstall.sh"
 echo ""
-echo "To change frequency, edit crontab: crontab -e"
+
+# Offer optional optimizations
+echo "=== Optional: System Optimizations ==="
+echo ""
+read -p "Disable swap & apt-updates to preserve SD card? [y/N] " -n 1 -r
+echo ""
+if [[ $REPLY =~ ^[Yy]$ ]]; then
+    echo "Disabling swap..."
+    sudo swapoff -a 2>/dev/null || true
+    echo "Disabling apt-daily timers..."
+    sudo systemctl disable apt-daily.timer apt-daily-upgrade.timer 2>/dev/null || true
+    echo "✓ SD card preservation enabled"
+fi
+
+echo ""
+read -p "Set up auto-reboot every 6 hours for stability? [y/N] " -n 1 -r
+echo ""
+if [[ $REPLY =~ ^[Yy]$ ]]; then
+    REBOOT_JOB="0 */6 * * * /sbin/reboot"
+    if sudo crontab -l 2>/dev/null | grep -q "/sbin/reboot"; then
+        echo "⚠ Reboot cron already exists, skipping"
+    else
+        (sudo crontab -l 2>/dev/null || true; echo "$REBOOT_JOB") | sudo crontab -
+        echo "✓ Auto-reboot scheduled (00:00, 06:00, 12:00, 18:00)"
+    fi
+fi
+
+echo ""
+echo "Setup complete! First capture will happen at the next minute."
+