fix: add null checks to parsers and fix docs path

src/components/ApiDocViewer.tsx

@@ -5,12 +5,13 @@ import { parseMarkdown, buildFileTree } from '@/lib/parser'
 import type { DocFile, ParsedDoc } from '@/lib/types'
 import { config } from '@/config'
 
-const modules = import.meta.glob('../docs/**/*.md', { as: 'raw', eager: true })
+const modules = import.meta.glob('../docs/api/**/*.md', { as: 'raw', eager: true })
 
 const DOCS_FILES: Record<string, string> = Object.fromEntries(
   Object.entries(modules).map(([path, content]) => {
-    const relativePath = path.replace('../docs/', '')
-    return [relativePath, content as string]
+    const relativePath = path.replace('../docs/api/', '')
+    const fileContent = typeof content === 'string' ? content : ''
+    return [relativePath, fileContent]
   })
 )
 

src/data/blueprintParser.ts

@@ -41,12 +41,14 @@ export interface BlueprintData {
 }
 
 function extractYamlBlock(markdown: string, sectionName: string): string {
+  if (!markdown || typeof markdown !== 'string') return '';
   const pattern = new RegExp(`# ${sectionName}[\\s\\S]*?\`\`\`yaml\\n([\\s\\S]*?)\n\`\`\``, 'i');
   const match = markdown.match(pattern);
-  return match ? match[1].trim() : '';
+  return match ? (match[1] || '').trim() : '';
 }
 
 function parseSubsystems(yaml: string): Subsystem[] {
+  if (!yaml || typeof yaml !== 'string') return [];
   const subsystems: Subsystem[] = [];
   const lines = yaml.split('\n');
   
@@ -159,6 +161,7 @@ function parseSubsystems(yaml: string): Subsystem[] {
 }
 
 function parseModules(yaml: string): Module[] {
+  if (!yaml || typeof yaml !== 'string') return [];
   const modules: Module[] = [];
   const lines = yaml.split('\n');
   
@@ -270,6 +273,14 @@ function parseModules(yaml: string): Module[] {
 }
 
 export function parseBlueprintFromMd(markdown: string): BlueprintData {
+  if (!markdown || typeof markdown !== 'string') {
+    return {
+      meta: { name: 'Unknown', version: '0.0.0', type: 'unknown', description: '', target_runtime: '' },
+      subsystems: [],
+      modules: []
+    };
+  }
+  
   const metaYaml = extractYamlBlock(markdown, 'SYSTEM_META');
   const structureYaml = extractYamlBlock(markdown, 'SYSTEM_STRUCTURE');
   

src/lib/parser.ts

@@ -8,6 +8,10 @@ const HR_REGEX = /^---+$/
 const REFERENCE_REGEX = /@see\s+([^\s]+)/g
 
 export function parseMarkdown(content: string): ParsedDoc {
+  if (!content || typeof content !== 'string') {
+    return { title: '', metadata: {}, sections: [], references: [] };
+  }
+  
   const lines = content.split('\n')
   const result: ParsedDoc = {
     title: '',