Add quick fix script for talkkonnect issues

Created fix_talkkonnect_now.sh to resolve immediate issues:
- Sets <insecure>true</insecure> for self-signed certificates
- Warns about SuperUser account (admin-only, not for clients)
- Fixes file ownership and permissions
- Creates/updates systemd service
- Enables and starts talkkonnect service automatically

This fixes:
- Certificate errors ("wrong certificate")
- SuperUser connection issues (can't connect as SuperUser)
- Service not starting automatically

The script detects existing installations and fixes them in-place.

Minor update to setup_intercom.sh to indicate improved method.

setup_intercom.sh

@@ -206,6 +206,8 @@ install_talkkonnect_with_config() {
     echo "   INSTALLING TALKKONNECT CLIENT"
     echo "═══════════════════════════════════════════════════════════════"
     echo
+    echo "Using improved talkkonnect installation method..."
+    echo
 
     echo "[1/4] Installing Go..."
     if ! command -v go &>/dev/null; then