Generate /doc using documentation.js; drop redundant docs from readme

scripts/expand-docs-nav.js

@@ -0,0 +1,28 @@
+#!/usr/bin/env node
+
+/**
+ * Automatically expand all accordion elements in documentation navigation
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+const docsIndexPath = path.join(__dirname, '../doc/index.html');
+
+if (!fs.existsSync(docsIndexPath)) {
+  console.error('Error: doc/index.html not found');
+  process.exit(1);
+}
+
+let html = fs.readFileSync(docsIndexPath, 'utf8');
+
+// Remove 'display-none' from all toggle-target elements (handles both single and double quotes, and different class orderings)
+html = html.replace(/class=['"]([^'"]*\s)?display-none\s+toggle-target([^'"]*)['"]/g, "class='$1toggle-target$2'");
+html = html.replace(/class=['"]([^'"]*\s)?toggle-target\s+display-none([^'"]*)['"]/g, "class='$1toggle-target$2'");
+
+// Change the toggle icon from ▸ (collapsed) to ▾ (expanded)
+html = html.replace(/<span class='icon'>▸<\/span>/g, "<span class='icon'>▾</span>");
+
+fs.writeFileSync(docsIndexPath, html);
+
+console.log('✓ Expanded all navigation accordions in documentation');