Add dorveille article and full Hugo site scaffold

- content/dorveille.md: 'On the Craft of Invisible Systems'
- assets/css/: ASW layer system (00-reset through 09-landing + Open Props)
- layouts/: baseof, single, list, index — semantic HTML, no classes
- hugo.toml: baseURL asw.trentuna.com, PostCSS + minify pipeline
- package.json: postcss-import, postcss-custom-media, cssnano
- .gitignore: excludes public/, node_modules, build artifacts

Site builds to public/ via hugo --minify. nginx serves public/ statically.

assets/css/asw.css

@@ -0,0 +1,25 @@
+/* ASW — Agentic Semantic Web Framework
+ * Entry point: Open Props foundation + ASW layer stack
+ * PostCSS-import resolves all @imports at build time
+ */
+
+/* 1. Full Open Props token foundation */
+@import "open-props/open-props.min.css";
+
+/* 2. ASW theme overrides — edit here to retheme */
+:root {
+  /* Override Open Props primitives or ASW semantics here */
+}
+
+/* 3. Framework layers — stable, do not edit */
+@import "./layers/00-reset.css";
+@import "./layers/01-tokens.css";
+@import "./layers/02-semantic.css";
+@import "./layers/03-components.css";
+@import "./layers/04-data-attrs.css";
+@import "./layers/05-utilities.css";
+@import "./layers/06-charts.css";
+@import "./layers/07-chroma.css";
+@import "./layers/08-layout.css";
+@import "./layers/08a-paper.css";
+@import "./layers/09-landing.css";