feat: Improve Docusaurus link generation

- Add function to fix links for nested categories
- Adjust path generation for nested collections
- Remove .md extensions from Docusaurus links
- Conditionally apply name_fix to page paths

lib/web/docusaurus/dsite_generate_docs.v

@@ -117,6 +117,9 @@ fn (mut generator SiteGenerator) page_generate(args_ Page) ! {
 		page_content = markdowntools.set_titles(page_content, args.title_nr)
 	}
 
+	// Fix links to account for nested categories
+	page_content = generator.fix_links(page_content)
+
 	c += '\n${page_content}\n'
 
 	if args.path.ends_with('/') || args.path.trim_space() == '' {
@@ -155,3 +158,48 @@ fn (mut generator SiteGenerator) section_generate(args_ Section) ! {
 
 	catfile.write(c)!
 }
+
+// Fix links to account for nested categories in Docusaurus
+// Doctree exports links as ../collection/page.md but Docusaurus may have nested paths
+fn (generator SiteGenerator) fix_links(content string) string {
+	mut result := content
+
+	// Build a map of collection name to actual directory path
+	mut collection_paths := map[string]string{}
+	for page in generator.site.pages {
+		parts := page.src.split(':')
+		if parts.len != 2 {
+			continue
+		}
+		collection := parts[0]
+
+		// Extract directory path from page.path
+		// page.path can be like "appendix/internet_today/" or "appendix/internet_today/page.md"
+		mut dir_path := page.path.trim('/')
+
+		// If path ends with a filename, remove it to get just the directory
+		if dir_path.contains('/') && !dir_path.ends_with('/') {
+			// Check if last part looks like a filename (has extension or is a page name)
+			last_part := dir_path.all_after_last('/')
+			if last_part.contains('.') || last_part == parts[1] {
+				dir_path = dir_path.all_before_last('/')
+			}
+		}
+
+		// If the directory path is different from collection name, store the mapping
+		// This handles nested categories like appendix/internet_today
+		if dir_path != collection && dir_path != '' {
+			collection_paths[collection] = dir_path
+		}
+	}
+
+	// Replace ../collection/ with ../actual/nested/path/ for nested collections
+	for collection, actual_path in collection_paths {
+		result = result.replace('../${collection}/', '../${actual_path}/')
+	}
+
+	// Remove .md extensions from all links (Docusaurus doesn't use them in URLs)
+	result = result.replace('.md)', ')')
+
+	return result
+}

lib/web/site/play_page.v

@@ -91,7 +91,11 @@ fn play_pages(mut plbook PlayBook, mut site Site) ! {
 				section_current.name)!)!)!
 			mut pagepath := p.get_default('path', section_current.path)!
 			pagepath = pagepath.trim_space().trim('/')
-			pagepath = texttools.name_fix(pagepath)
+			// Only apply name_fix if it's a simple name (no path separators)
+			// For paths like 'appendix/internet_today', preserve the structure
+			if !pagepath.contains('/') {
+				pagepath = texttools.name_fix(pagepath)
+			}
 			// Ensure pagepath ends with / to indicate it's a directory path
 			if pagepath.len > 0 && !pagepath.ends_with('/') {
 				pagepath += '/'