feat: add Alpine visual companion mockups

skills/brainstorming/scripts/vendor/THIRD_PARTY_NOTICES.md

@@ -0,0 +1,48 @@
+# Third-Party Notices
+
+## Alpine.js
+
+- Package: `alpinejs`
+- Version: `3.15.12`
+- Source: `https://registry.npmjs.org/alpinejs/-/alpinejs-3.15.12.tgz`
+- Vendored file: `package/dist/cdn.min.js`
+- Local path: `skills/brainstorming/scripts/vendor/alpine.js`
+- SHA256: `57b37d7cae9a27d965fdae4adcc844245dfdc407e655aee85dcfff3a08036a3f`
+
+Refresh command:
+
+```bash
+cd "$(git rev-parse --show-toplevel)"
+tmpdir="$(mktemp -d)"
+curl -fsSL https://registry.npmjs.org/alpinejs/-/alpinejs-3.15.12.tgz -o "$tmpdir/alpinejs-3.15.12.tgz"
+tar -xzf "$tmpdir/alpinejs-3.15.12.tgz" -C "$tmpdir" package/dist/cdn.min.js
+cp "$tmpdir/package/dist/cdn.min.js" skills/brainstorming/scripts/vendor/alpine.js
+shasum -a 256 skills/brainstorming/scripts/vendor/alpine.js
+rm -rf "$tmpdir"
+```
+
+License:
+
+```text
+MIT License
+
+Copyright © 2019-2025 Caleb Porzio 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.
+```