chore: add vitepress-plugin-mermaid for documentation diagrams

- Install vitepress-plugin-mermaid and mermaid dependencies
- Configure Mermaid in VitePress config
- Add architecture diagrams to documentation
- Fix d3-array import issue with Vite alias

Authored by: Aaron Lippold<lippold@gmail.com>

Author: aaronlippold

docs/.vitepress/config.ts

@@ -1,6 +1,7 @@
 import { defineConfig } from 'vitepress'
+import { withMermaid } from 'vitepress-plugin-mermaid'
 
-export default defineConfig({
+export default withMermaid(defineConfig({
   title: 'Nuxt SmartScript',
   description: 'Smart typography transformations for Nuxt',
 
@@ -17,6 +18,13 @@ export default defineConfig({
   vite: {
     resolve: {
       preserveSymlinks: true,
+      alias: {
+        // Fix for d3-array blur2 export issue
+        'd3-array': 'd3-array/dist/d3-array.min.js',
+      },
+    },
+    optimizeDeps: {
+      include: ['mermaid'],
     },
   },
 
@@ -28,9 +36,26 @@ export default defineConfig({
         text: 'Guide',
         items: [
           { text: 'Getting Started', link: '/guide/getting-started' },
+          { text: 'Deployment Modes', link: '/guide/deployment-modes' },
           { text: 'Vue Integration', link: '/vue-integration' },
           { text: 'Examples', link: '/examples' },
-          { text: 'Architecture', link: '/architecture' },
+        ],
+      },
+      {
+        text: 'Architecture',
+        items: [
+          { text: 'Overview', link: '/architecture' },
+          { text: 'System Architecture', link: '/system-architecture' },
+          { text: 'Processing Pipeline', link: '/processing-architecture' },
+        ],
+      },
+      {
+        text: 'Testing',
+        items: [
+          { text: 'Overview', link: '/testing' },
+          { text: 'Unit Tests', link: '/testing/unit-tests' },
+          { text: 'Integration Tests', link: '/testing/integration-tests' },
+          { text: 'E2E Tests', link: '/testing/e2e-tests' },
         ],
       },
       {
@@ -58,10 +83,32 @@ export default defineConfig({
         collapsed: false,
         items: [
           { text: 'Getting Started', link: '/guide/getting-started' },
+          { text: 'Deployment Modes', link: '/guide/deployment-modes' },
           { text: 'Vue Integration', link: '/vue-integration' },
           { text: 'Patterns & Examples', link: '/examples' },
         ],
       },
+      {
+        text: 'Architecture',
+        collapsed: false,
+        items: [
+          { text: 'Overview', link: '/architecture' },
+          { text: 'System Architecture', link: '/system-architecture' },
+          { text: 'Processing Pipeline', link: '/processing-architecture' },
+        ],
+      },
+      {
+        text: 'Testing',
+        collapsed: false,
+        items: [
+          { text: 'Testing Overview', link: '/testing' },
+          { text: 'Testing Guide', link: '/testing/index' },
+          { text: 'Unit Tests', link: '/testing/unit-tests' },
+          { text: 'Integration Tests', link: '/testing/integration-tests' },
+          { text: 'E2E Tests', link: '/testing/e2e-tests' },
+          { text: 'Writing Tests', link: '/testing/writing-tests' },
+        ],
+      },
       {
         text: 'API Reference',
         collapsed: false,
@@ -75,16 +122,24 @@ export default defineConfig({
         text: 'Advanced',
         collapsed: true,
         items: [
-          { text: 'Architecture', link: '/architecture' },
           { text: 'Custom Patterns', link: '/advanced/custom-patterns' },
           { text: 'Performance', link: '/advanced/performance' },
+          { text: 'Pattern Design', link: '/pattern-design' },
         ],
       },
       {
-        text: 'Resources',
+        text: 'Contributing',
         collapsed: true,
         items: [
           { text: 'Contributing Guide', link: '/contributing' },
+          { text: 'Development Workflow', link: '/contributing/development-workflow' },
+          { text: 'Release Process', link: '/contributing/release-process' },
+        ],
+      },
+      {
+        text: 'Resources',
+        collapsed: true,
+        items: [
           { text: 'Changelog', link: 'https://github.com/mitre/nuxt-smartscript/blob/main/CHANGELOG.md' },
           { text: 'License', link: 'https://github.com/mitre/nuxt-smartscript/blob/main/LICENSE' },
         ],
@@ -104,4 +159,17 @@ export default defineConfig({
       provider: 'local',
     },
   },
-})
+
+  // Mermaid configuration
+  mermaid: {
+    theme: 'default',
+    themeVariables: {
+      primaryColor: '#3eaf7c',
+      primaryTextColor: '#fff',
+      primaryBorderColor: '#2c8658',
+      lineColor: '#5c5c5c',
+      secondaryColor: '#4fc08d',
+      tertiaryColor: '#fff',
+    },
+  },
+}))