feat: Modernize and fix documentation with hierarchical structure

✨ Features:
- Complete documentation modernization with hierarchical navigation
- Interactive UI with grid cards, tabs, dropdowns, and modern styling
- Enhanced Sphinx configuration with advanced extensions
- Custom CSS/JS for modern user experience and interactivity
- Comprehensive module coverage with auto-generated API documentation

🐛 Bug Fixes:
- Fixed all 38 Sphinx build warnings (now 0 warnings)
- Resolved grid directive syntax errors
- Removed references to non-existent modules
- Fixed import errors with autodoc_mock_imports
- Corrected title underlines and document references
- Removed unsupported theme options

🔧 Technical Improvements:
- Added sphinx-design for modern UI components
- Implemented responsive design with mobile support
- Enhanced code blocks with copy functionality
- Added smooth scrolling and progressive disclosure
- Integrated search highlighting and accessibility features
- Updated CI/CD workflow for enhanced doc generation

📁 Files Added:
- Complete module documentation (.rst files)
- Missing __init__.py files for proper module structure
- Enhanced static assets (custom.css, custom.js)
- Modern Sphinx configuration

🏗️ Architecture:
- Hierarchical documentation structure with clear navigation
- Interactive architecture overview with component deep dives
- Enhanced user experience with modern web standards
- Production-ready documentation build system

Author: vinod0m

doc/CodeDocs/_static/custom.js

@@ -0,0 +1,391 @@
+// Modern Interactive Documentation JavaScript
+// ===========================================
+
+document.addEventListener('DOMContentLoaded', function() {
+    'use strict';
+    
+    // Initialize all interactive features
+    initializeInteractiveFeatures();
+    initializeSearchHighlighting();
+    initializeCodeCopyButtons();
+    initializeProgressiveDisclosure();
+    initializeSmoothScrolling();
+    initializeThemeToggle();
+    
+    console.log('Enhanced documentation JavaScript loaded successfully');
+});
+
+/**
+ * Initialize all interactive features
+ */
+function initializeInteractiveFeatures() {
+    // Add loading animations for heavy content
+    const heavyContent = document.querySelectorAll('.architecture-diagram, .call-tree-diagram');
+    heavyContent.forEach(element => {
+        element.style.opacity = '0';
+        element.style.transition = 'opacity 0.5s ease-in-out';
+        
+        // Simulate loading and fade in
+        setTimeout(() => {
+            element.style.opacity = '1';
+        }, 100);
+    });
+    
+    // Add hover effects for interactive elements
+    const interactiveElements = document.querySelectorAll('.sd-card, .admonition, details.sd-dropdown');
+    interactiveElements.forEach(element => {
+        element.addEventListener('mouseenter', function() {
+            this.style.transition = 'all 0.3s ease';
+        });
+    });
+}
+
+/**
+ * Enhanced search term highlighting
+ */
+function initializeSearchHighlighting() {
+    // Get search terms from URL parameters
+    const urlParams = new URLSearchParams(window.location.search);
+    const searchTerm = urlParams.get('highlight');
+    
+    if (searchTerm) {
+        highlightSearchTerm(searchTerm);
+    }
+}
+
+/**
+ * Highlight search terms in the document
+ */
+function highlightSearchTerm(term) {
+    const walker = document.createTreeWalker(
+        document.body,
+        NodeFilter.SHOW_TEXT,
+        {
+            acceptNode: function(node) {
+                // Skip script and style elements
+                const parentTag = node.parentElement.tagName.toLowerCase();
+                if (['script', 'style', 'noscript'].includes(parentTag)) {
+                    return NodeFilter.FILTER_REJECT;
+                }
+                return NodeFilter.FILTER_ACCEPT;
+            }
+        }
+    );
+    
+    const textNodes = [];
+    let node;
+    
+    while (node = walker.nextNode()) {
+        textNodes.push(node);
+    }
+    
+    const regex = new RegExp(`(${term})`, 'gi');
+    
+    textNodes.forEach(textNode => {
+        if (regex.test(textNode.textContent)) {
+            const parent = textNode.parentNode;
+            const wrapper = document.createElement('span');
+            wrapper.innerHTML = textNode.textContent.replace(regex, '<mark class="search-highlight">$1</mark>');
+            parent.replaceChild(wrapper, textNode);
+        }
+    });
+    
+    // Add CSS for search highlighting
+    if (!document.getElementById('search-highlight-styles')) {
+        const style = document.createElement('style');
+        style.id = 'search-highlight-styles';
+        style.textContent = `
+            .search-highlight {
+                background-color: #ffeb3b;
+                color: #333;
+                padding: 2px 4px;
+                border-radius: 3px;
+                font-weight: 600;
+                animation: highlight-pulse 2s ease-in-out;
+            }
+            
+            @keyframes highlight-pulse {
+                0% { background-color: #ffeb3b; }
+                50% { background-color: #ff9800; }
+                100% { background-color: #ffeb3b; }
+            }
+        `;
+        document.head.appendChild(style);
+    }
+}
+
+/**
+ * Enhanced copy buttons for code blocks
+ */
+function initializeCodeCopyButtons() {
+    const codeBlocks = document.querySelectorAll('.highlight pre');
+    
+    codeBlocks.forEach(codeBlock => {
+        // Skip if copy button already exists
+        if (codeBlock.parentNode.querySelector('.copy-button')) {
+            return;
+        }
+        
+        const copyButton = document.createElement('button');
+        copyButton.className = 'copy-button';
+        copyButton.innerHTML = `
+            <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+                <rect x="9" y="9" width="13" height="13" rx="2" ry="2"></rect>
+                <path d="m5 15-4 4c-1-5 0-7 4-11 4-4 8-3 11 0l4 4c3 3 4 7 0 11-4 4-8 3-11 0z"></path>
+            </svg>
+            Copy
+        `;
+        copyButton.title = 'Copy code to clipboard';
+        
+        copyButton.addEventListener('click', async function() {
+            const code = codeBlock.textContent;
+            
+            try {
+                await navigator.clipboard.writeText(code);
+                
+                // Visual feedback
+                copyButton.innerHTML = `
+                    <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+                        <polyline points="20,6 9,17 4,12"></polyline>
+                    </svg>
+                    Copied!
+                `;
+                copyButton.style.background = '#28a745';
+                copyButton.style.color = 'white';
+                
+                setTimeout(() => {
+                    copyButton.innerHTML = `
+                        <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+                            <rect x="9" y="9" width="13" height="13" rx="2" ry="2"></rect>
+                            <path d="m5 15-4 4c-1-5 0-7 4-11 4-4 8-3 11 0l4 4c3 3 4 7 0 11-4 4-8 3-11 0z"></path>
+                        </svg>
+                        Copy
+                    `;
+                    copyButton.style.background = '';
+                    copyButton.style.color = '';
+                }, 2000);
+                
+            } catch (err) {
+                console.error('Failed to copy code:', err);
+                copyButton.innerHTML = 'Failed to copy';
+                setTimeout(() => {
+                    copyButton.innerHTML = `
+                        <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+                            <rect x="9" y="9" width="13" height="13" rx="2" ry="2"></rect>
+                            <path d="m5 15-4 4c-1-5 0-7 4-11 4-4 8-3 11 0l4 4c3 3 4 7 0 11-4 4-8 3-11 0z"></path>
+                        </svg>
+                        Copy
+                    `;
+                }, 2000);
+            }
+        });
+        
+        // Position the button
+        const container = codeBlock.parentNode;
+        container.style.position = 'relative';
+        container.appendChild(copyButton);
+    });
+    
+    // Add CSS for copy buttons
+    if (!document.getElementById('copy-button-styles')) {
+        const style = document.createElement('style');
+        style.id = 'copy-button-styles';
+        style.textContent = `
+            .copy-button {
+                position: absolute;
+                top: 10px;
+                right: 10px;
+                background: rgba(255, 255, 255, 0.1);
+                border: 1px solid rgba(255, 255, 255, 0.2);
+                color: rgba(255, 255, 255, 0.8);
+                padding: 6px 12px;
+                border-radius: 4px;
+                font-size: 12px;
+                cursor: pointer;
+                display: flex;
+                align-items: center;
+                gap: 4px;
+                transition: all 0.2s ease;
+                backdrop-filter: blur(10px);
+                z-index: 10;
+            }
+            
+            .copy-button:hover {
+                background: rgba(255, 255, 255, 0.2);
+                border-color: rgba(255, 255, 255, 0.3);
+                color: white;
+            }
+            
+            .copy-button svg {
+                width: 16px;
+                height: 16px;
+            }
+        `;
+        document.head.appendChild(style);
+    }
+}
+
+/**
+ * Progressive disclosure for large sections
+ */
+function initializeProgressiveDisclosure() {
+    // Auto-collapse large sections on mobile
+    if (window.innerWidth < 768) {
+        const largeSections = document.querySelectorAll('details.sd-dropdown');
+        largeSections.forEach((section, index) => {
+            if (index > 2) { // Keep first 3 open, collapse rest
+                section.removeAttribute('open');
+            }
+        });
+    }
+    
+    // Add expand/collapse all functionality
+    const navSection = document.querySelector('.sidebar-navigation') || document.querySelector('nav');
+    if (navSection) {
+        const expandAllBtn = document.createElement('button');
+        expandAllBtn.textContent = 'Expand All Sections';
+        expandAllBtn.className = 'expand-all-btn';
+        expandAllBtn.style.cssText = `
+            margin: 10px 0;
+            padding: 8px 16px;
+            background: var(--primary-color, #0066cc);
+            color: white;
+            border: none;
+            border-radius: 4px;
+            cursor: pointer;
+            font-size: 12px;
+            width: 100%;
+        `;
+        
+        let allExpanded = false;
+        expandAllBtn.addEventListener('click', function() {
+            const dropdowns = document.querySelectorAll('details.sd-dropdown');
+            
+            if (allExpanded) {
+                dropdowns.forEach(dropdown => dropdown.removeAttribute('open'));
+                expandAllBtn.textContent = 'Expand All Sections';
+                allExpanded = false;
+            } else {
+                dropdowns.forEach(dropdown => dropdown.setAttribute('open', ''));
+                expandAllBtn.textContent = 'Collapse All Sections';
+                allExpanded = true;
+            }
+        });
+        
+        navSection.appendChild(expandAllBtn);
+    }
+}
+
+/**
+ * Smooth scrolling for internal links
+ */
+function initializeSmoothScrolling() {
+    const internalLinks = document.querySelectorAll('a[href^="#"]');
+    
+    internalLinks.forEach(link => {
+        link.addEventListener('click', function(e) {
+            const targetId = this.getAttribute('href').substring(1);
+            const targetElement = document.getElementById(targetId);
+            
+            if (targetElement) {
+                e.preventDefault();
+                
+                targetElement.scrollIntoView({
+                    behavior: 'smooth',
+                    block: 'start'
+                });
+                
+                // Update URL without triggering scroll
+                history.pushState(null, null, `#${targetId}`);
+                
+                // Highlight the target element briefly
+                targetElement.style.transition = 'background-color 0.3s ease';
+                targetElement.style.backgroundColor = 'rgba(0, 102, 204, 0.1)';
+                
+                setTimeout(() => {
+                    targetElement.style.backgroundColor = '';
+                }, 1500);
+            }
+        });
+    });
+}
+
+/**
+ * Theme toggle functionality (if supported)
+ */
+function initializeThemeToggle() {
+    // Check if theme toggle is supported by the current theme
+    const themeToggle = document.querySelector('.theme-toggle');
+    
+    if (themeToggle || window.matchMedia) {
+        // Add theme preference handling
+        const prefersDark = window.matchMedia('(prefers-color-scheme: dark)');
+        
+        if (prefersDark.matches) {
+            document.body.classList.add('dark-theme');
+        }
+        
+        // Listen for theme changes
+        prefersDark.addListener((e) => {
+            if (e.matches) {
+                document.body.classList.add('dark-theme');
+            } else {
+                document.body.classList.remove('dark-theme');
+            }
+        });
+    }
+}
+
+/**
+ * Lazy loading for images and heavy content
+ */
+function initializeLazyLoading() {
+    if ('IntersectionObserver' in window) {
+        const imageObserver = new IntersectionObserver((entries, observer) => {
+            entries.forEach(entry => {
+                if (entry.isIntersecting) {
+                    const img = entry.target;
+                    if (img.dataset.src) {
+                        img.src = img.dataset.src;
+                        img.classList.remove('lazy');
+                        observer.unobserve(img);
+                    }
+                }
+            });
+        });
+        
+        const lazyImages = document.querySelectorAll('img[data-src]');
+        lazyImages.forEach(img => imageObserver.observe(img));
+    }
+}
+
+/**
+ * Performance monitoring
+ */
+function initializePerformanceMonitoring() {
+    if ('PerformanceObserver' in window) {
+        const perfObserver = new PerformanceObserver((list) => {
+            list.getEntries().forEach((entry) => {
+                if (entry.entryType === 'navigation') {
+                    console.log(`Page load time: ${entry.loadEventEnd - entry.loadEventStart}ms`);
+                }
+            });
+        });
+        
+        perfObserver.observe({ entryTypes: ['navigation'] });
+    }
+}
+
+// Initialize additional features when the page is fully loaded
+window.addEventListener('load', function() {
+    initializeLazyLoading();
+    initializePerformanceMonitoring();
+});
+
+// Export functions for external use
+window.DocumentationEnhancements = {
+    highlightSearchTerm,
+    initializeCodeCopyButtons,
+    initializeProgressiveDisclosure,
+    initializeSmoothScrolling
+};