Initial commit — Bar Pivoine cocktail recipe site

Hugo Extended site with 426 cocktail recipes from the open cocktail dataset.
Dark amber/gold editorial aesthetic, Tailwind CSS v4, Alpine.js client-side
search and filtering, HTMX page transitions, Docker + nginx production build.

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

static/site.webmanifest

@@ -0,0 +1,12 @@
+{
+  "name": "Bar Pivoine",
+  "short_name": "Bar Pivoine",
+  "description": "A field guide to the good pour.",
+  "icons": [
+    { "src": "/favicon.svg", "type": "image/svg+xml", "sizes": "any" }
+  ],
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#14100c",
+  "theme_color": "#14100c"
+}