Instructions for manually create systemd service for site are faulty on 1.23.0

### Describe the Bug

Systemd service file creating instructions are faulty pointing not to the installed pangolin binary:

```
sudo tee /etc/systemd/system/pangolin-site.service > /dev/null << 'EOF'
[Unit]
Description=Pangolin Site
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
User=root
Group=root
EnvironmentFile=/etc/pangolin/pangolin-site.env
ExecStart=/home/owen/fossorial/cli/bin/pangolin up site
Restart=always
RestartSec=2
UMask=0077

PrivateTmp=true

[Install]
WantedBy=multi-user.target
EOF
```

Should be /usr/local/bin/pangolin instead of /home/owen/fossorial/cli/bin/pangolin

### Environment

- OS Type & Version: Debian 13
- Pangolin Version: 1.23.0
- Edition (Community or Enterprise): CE
- Gerbil Version: 1.5.1
- Traefik Version: 3.7
- Newt Version: N/a, pangolin CLI
- Client Version: 1.7.0

### To Reproduce

Check site creation instructions with manually creating the systemd service.

### AI Disclosure

None

### Expected Behavior

Systemd service file should be

```
sudo tee /etc/systemd/system/pangolin-site.service > /dev/null << 'EOF'
[Unit]
Description=Pangolin Site
Wants=network-online.target
After=network-online.target

[Service]
Type=simple
User=root
Group=root
EnvironmentFile=/etc/pangolin/pangolin-site.env
ExecStart=/usr/local/bin/pangolin up site
Restart=always
RestartSec=2
UMask=0077

PrivateTmp=true

[Install]
WantedBy=multi-user.target
EOF
```

Review the manually created systemd service instructions for site creation and compare the ExecStart path with the installed Pangolin binary location described in the issue. Done means the instructions use /usr/local/bin/pangolin instead of the development-machine path shown for version 1.23.0.

Written by the indexing model from the issue text.