feat: PCA Phobos — web panel for obfuscated WireGuard VPN

Flask web panel for Phobos (wg-obfuscator + WireGuard):
- Active sessions monitoring (wg show)
- Client management (add/remove via phobos-client.sh)
- Labels by Real IP
- Subscription expiry with auto-kick
- Telegram notifications (connect/disconnect/expiry)
- One-command installer
- Dark theme UI

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

phobos-panel.service

@@ -0,0 +1,15 @@
+[Unit]
+Description=Phobos VPN Web Panel
+After=network.target wg-quick@wg0.service
+Wants=wg-quick@wg0.service
+
+[Service]
+Type=simple
+WorkingDirectory=/opt/phobos-panel
+ExecStart=/usr/bin/gunicorn -w 1 -b 0.0.0.0:8443 app:app
+Restart=always
+RestartSec=5
+Environment=PYTHONUNBUFFERED=1
+
+[Install]
+WantedBy=multi-user.target