fix: CSS layers were silently dropped by postcss-import

postcss-import requires ALL @import statements before any rules.
The :root {} override block between Open Props import and layer
imports caused all 11 layer files to be silently dropped — only
Open Props variables made it through (29KB of definitions, zero
actual styles).

Fix: move :root overrides after all imports. Add explicit PostCSS
build step to deploy.sh (Hugo Pipes runs from a temp dir that
breaks relative paths anyway).

Result: 102KB compiled CSS = Open Props + all ASW layers.

assets/css/asw.css

@@ -1,17 +1,15 @@
 /* ASW — Agentic Semantic Web Framework
  * Entry point: Open Props foundation + ASW layer stack
  * PostCSS-import resolves all @imports at build time
+ *
+ * NOTE: ALL @import statements must come first.
+ * postcss-import drops any @import that follows a rule.
  */
 
-/* 1. Full Open Props token foundation */
+/* 1. 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 */
+/* 2. Framework layers */
 @import "./layers/00-reset.css";
 @import "./layers/01-tokens.css";
 @import "./layers/02-semantic.css";
@@ -23,3 +21,8 @@
 @import "./layers/08-layout.css";
 @import "./layers/08a-paper.css";
 @import "./layers/09-landing.css";
+
+/* 3. ASW theme overrides — edit here to retheme */
+:root {
+  /* Override Open Props primitives or ASW semantics here */
+}

deploy.sh

@@ -4,5 +4,6 @@ set -euo pipefail
 cd ~/projects/asw
 git pull origin main --ff-only
 npm ci --prefer-offline 2>/dev/null
+npx postcss assets/css/asw.css -o assets/css/asw-built.css
 hugo
 echo "[$(date -u +%Y-%m-%dT%H:%M:%SZ)] Deploy complete" >> /tmp/asw-deploy.log