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/layers/00-reset.css

@@ -0,0 +1,58 @@
+/**
+ * 00-reset.css
+ * CSS reset and normalization
+ * Ported from: Pico CSS v2.1.1
+ */
+
+/* Box-sizing reset */
+*,
+*::before,
+*::after {
+  box-sizing: border-box;
+  background-repeat: no-repeat;
+}
+
+::before,
+::after {
+  text-decoration: inherit;
+  vertical-align: inherit;
+}
+
+/* Document */
+:where(:root) {
+  -webkit-tap-highlight-color: transparent;
+  -webkit-text-size-adjust: 100%;
+  text-size-adjust: 100%;
+  text-rendering: optimizeLegibility;
+  overflow-wrap: break-word;
+  tab-size: 4;
+}
+
+/* Root font-size — 100% default, responsive scaling in 01-tokens.css */
+html {
+  font-size: 100%;
+}
+
+/* Body */
+body {
+  width: 100%;
+  margin: 0;
+  padding: 0;
+  font-size: var(--text-base);   /* 1rem — inherits html responsive scaling */
+  font-family: var(--font-ui);
+  background-color: var(--surface);
+  color: var(--text);
+}
+
+/* Prose font — same neo-grotesque stack, consistent across all contexts */
+/* article and [data-layout="prose"] inherit body font — no override needed */
+
+/* Main */
+main {
+  display: block;
+}
+
+/* Nested lists */
+:where(dl, ol, ul) :where(dl, ol, ul) {
+  margin: 0;
+}