Eliminate navigation duplication between navbar and sidebar configurations

[Copilot]

This PR addresses the duplicate navigation information between the navbar and sidebar configurations, which was causing maintenance overhead and potential inconsistencies.

Problem

The documentation site had duplicate navigation structures defined in two separate files:

• /main/.vitepress/themeConfig/nav.js (navbar configuration) - 218 lines
• /main/.vitepress/config.mjs (sidebar configuration) - 500+ lines

This duplication meant:

• Changes to navigation required updates in two places
• Risk of navbar and sidebar getting out of sync
• Increased maintenance burden
• Potential for configuration drift

Solution

Created a shared navigation configuration system that eliminates duplication while preserving all existing functionality:

1. Shared Navigation Source (shared-nav.js)

// Single source of truth for navigation structure
export const sharedNavigation = [
  {
    text: 'Orchestrate',
    collapsed: true,
    items: [
      // ... navigation items
    ]
  },
  // ... other sections
];

// Function to generate sidebar-specific enhancements
export function generateSidebarConfig(baseNav) {
  // Enhanced sidebar generation logic
}

2. Simplified Navbar (nav.js)

// Before: 218 lines of navigation configuration
// After: 9 lines with import/export
import { sharedNavigation } from './shared-nav.js';
export const nav = sharedNavigation;

3. Dynamic Sidebar Generation (config.mjs)

// Before: 500+ lines of hardcoded sidebar config
// After: Dynamic generation from shared source
import { generateSidebarConfig, sharedNavigation } from './themeConfig/shared-nav.js';

export default defineConfig({
  themeConfig: {
    nav,
    sidebar: {
      '/': generateSidebarConfig(sharedNavigation),
    },
  },
});

Benefits

• ✅ Eliminated duplication: Navigation structure defined once, used everywhere
• ✅ Improved maintainability: Changes only need to be made in one place
• ✅ Guaranteed consistency: Navbar and sidebar automatically stay synchronized
• ✅ Reduced code: 66% reduction in navigation-related configuration code
• ✅ Enhanced reliability: No risk of configuration drift between navbar and sidebar

Testing

• ✅ All configuration files load without errors
• ✅ Navigation structure preserved across navbar and sidebar
• ✅ Content consistency verified between navbar and sidebar
• ✅ All major navigation links preserved
• ✅ VitePress configuration validates successfully
• ✅ No breaking changes to existing functionality

Files Changed

• Created: /main/.vitepress/themeConfig/shared-nav.js - Shared navigation configuration
• Modified: /main/.vitepress/themeConfig/nav.js - Simplified to use shared config
• Modified: /main/.vitepress/config.mjs - Updated to use dynamic sidebar generation
• Fixed: /main/.vitepress/package.json - Updated module type for ES modules

The solution maintains backward compatibility while significantly improving the maintainability and consistency of the documentation site's navigation system.

Fixes #1230.

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