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debian/postrm

@@ -0,0 +1,42 @@
+#!/bin/sh
+set -e
+
+case "$1" in
+    purge)
+        # Remove user and group
+        if getent passwd mond >/dev/null; then
+            deluser --quiet mond || true
+        fi
+
+        if getent group mond >/dev/null; then
+            delgroup --quiet mond || true
+        fi
+
+        # Remove log directory
+        rm -rf /var/log/mond
+
+        # Note: We keep /var/lib/mond (blockchain data) for safety
+        # Users can manually remove it if needed
+        echo ""
+        echo "⚠️  Blockchain data preserved at: /var/lib/mond"
+        echo "To completely remove all data, run:"
+        echo "  sudo rm -rf /var/lib/mond"
+        echo ""
+        ;;
+
+    remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
+        # Do nothing
+        ;;
+
+    *)
+        echo "postrm called with unknown argument \`$1'" >&2
+        exit 1
+        ;;
+esac
+
+# Reload systemd
+if [ -d /run/systemd/system ]; then
+    systemctl daemon-reload
+fi
+
+exit 0