feat: route commands for peer clients (Linux/Windows) + footer signature

- scripts page: new card with Linux/macOS and Windows route commands
  per peer that has advertised_routes, with OS tab switcher and copy buttons
- Made by Galyaviev moved from sidebar to bottom-center page footer on all pages
- page-footer style: Dancing Script 20px, clickable mailto:ruslan@ipcom.su

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

gui/app.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python3
 import base64
 import io
+import ipaddress
 import os
 import secrets
 import sqlite3
@@ -658,6 +659,15 @@ def peer_rename(peer_id: int):
     return ("", 204)
 
 
+def _cidr_parts(cidr: str):
+    """Return (network_address, netmask) for a CIDR string."""
+    try:
+        net = ipaddress.ip_network(cidr.strip(), strict=False)
+        return str(net.network_address), str(net.netmask)
+    except Exception:
+        return cidr.strip(), ""
+
+
 @app.route("/scripts")
 def scripts():
     commands = {
@@ -666,14 +676,33 @@ def scripts():
         "apply_wg": "wg syncconf wg0 <(wg-quick strip /etc/wireguard/wg0.conf)",
     }
     paths = [
-        "sudo", "/usr/local/sbin/wg-peerctl",
+        "/usr/local/sbin/wg-peerctl",
         "/etc/wireguard/wg0.conf",
         "/etc/wireguard/wg-meta.env",
         "/var/log/wireguard-server-install.log",
         "/var/log/wireguard-client-install.log",
         "/var/log/wireguard-peerctl.log",
     ]
-    return render_template("scripts.html", commands=commands, paths=paths)
+
+    route_peers = []
+    with db_conn() as conn:
+        cur = conn.cursor()
+        cur.execute(
+            "SELECT name, client_address, advertised_routes FROM peers "
+            "WHERE advertised_routes IS NOT NULL AND advertised_routes != '' ORDER BY name"
+        )
+        for row in cur.fetchall():
+            wg_ip = (row["client_address"] or "").split("/")[0]
+            routes = []
+            for r in (row["advertised_routes"] or "").split(","):
+                r = r.strip()
+                if r:
+                    net, mask = _cidr_parts(r)
+                    routes.append({"cidr": r, "net": net, "mask": mask})
+            if wg_ip and routes:
+                route_peers.append({"name": row["name"], "wg_ip": wg_ip, "routes": routes})
+
+    return render_template("scripts.html", commands=commands, paths=paths, route_peers=route_peers)
 
 
 if __name__ == "__main__":