Generate and deploy real WG/AWG configs to VPS over SSH

Co-authored-by: Cursor <cursoragent@cursor.com>

app/routers/admin.py

@@ -147,6 +147,27 @@ async def check_ssh(
     return RedirectResponse("/admin/servers?flash=ssh_ok", status_code=status.HTTP_303_SEE_OTHER)
 
 
+@router.post("/servers/{server_id}/install-vpn")
+async def install_vpn(
+    server_id: int,
+    db: AsyncSession = Depends(get_db),
+    admin=Depends(require_admin),
+):
+    if _is_redirect(admin):
+        return admin
+    try:
+        await vpn_service.install_vpn_on_server(db, server_id)
+        return RedirectResponse(
+            "/admin/servers?flash=vpn_installed",
+            status_code=status.HTTP_303_SEE_OTHER,
+        )
+    except Exception as exc:  # noqa: BLE001
+        return RedirectResponse(
+            f"/admin/servers?flash=error:{exc}",
+            status_code=status.HTTP_303_SEE_OTHER,
+        )
+
+
 @router.post("/servers/{server_id}/delete")
 async def delete_server(
     server_id: int,