cover Deni responsive navigation and retain upstream notices

THIRD_PARTY_NOTICES.md

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+# Third-party source attribution
+
+## Deni
+
+The console layout and shared presentation styles are adapted from Deni,
+revision `72156473d5f73a26f97d35aa5fed3a96059779ef`, maintained by the
+OpenVue Foundation. Upstream: `https://github.com/openvi-foundation/deni`.
+
+Adapted sources: `src/layout/AppLayout.vue`, `AppSidebar.vue`, `AppTopbar.vue`,
+`AppMenuItem.vue`, and `src/assets/styles/_base.scss`, `_layout.scss`,
+`_sidebar.scss`, `_topbar.scss`, `_page.scss`. The adaptation uses Nuxt slots,
+the console's existing authentication and authorised menu, local Lucide icons,
+Chinese labels, measured maintenance offsets and three-mode theme handling.
+The upstream demo router, data, analytics and configurator are not included.
+
+The MIT License (MIT)
+
+Copyright (c) 2026 OpenVue Foundation and contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+
+## OpenVue packages
+
+`openvue`, `@openvue/forms` and `@openvue/themes` are pinned to 1.1.1.
+Their upstream licences and notices are distributed in the installed npm
+packages. Upstream: `https://github.com/openvi-foundation/openvue`.