🎉 Added minimal performance optimizations to documentation and codebase.

backend/static/js/performance-enhancements.js

@@ -0,0 +1,104 @@
+/**
+ * Minimal-invasive Performance-Optimierungen für MYP Platform
+ * Behält alle Funktionen bei, optimiert nur die Performance
+ */
+
+(function() {
+    'use strict';
+    
+    // Detektiere schwache Geräte
+    const isLowPerformanceDevice = () => {
+        return (
+            navigator.hardwareConcurrency <= 2 ||
+            navigator.deviceMemory <= 2 ||
+            /Android|iPhone|iPad|iPod|BlackBerry|Opera Mini|IEMobile|WPDesktop/i.test(navigator.userAgent)
+        );
+    };
+    
+    // Reduziere Animationen nur bei schwachen Geräten
+    if (isLowPerformanceDevice()) {
+        document.documentElement.style.setProperty('--animation-speed', '0.5');
+        document.documentElement.classList.add('low-performance');
+    }
+    
+    // Optimierte Intersection Observer für bessere Performance
+    const observerOptions = {
+        rootMargin: '50px',
+        threshold: 0.1
+    };
+    
+    // Lazy Loading für schwere Elemente
+    const lazyElements = document.querySelectorAll('[data-lazy]');
+    if (lazyElements.length && 'IntersectionObserver' in window) {
+        const lazyObserver = new IntersectionObserver((entries) => {
+            entries.forEach(entry => {
+                if (entry.isIntersecting) {
+                    const element = entry.target;
+                    element.classList.add('loaded');
+                    lazyObserver.unobserve(element);
+                }
+            });
+        }, observerOptions);
+        
+        lazyElements.forEach(el => lazyObserver.observe(el));
+    }
+    
+    // Debounced Resize Handler für bessere Performance
+    let resizeTimeout;
+    window.addEventListener('resize', () => {
+        clearTimeout(resizeTimeout);
+        resizeTimeout = setTimeout(() => {
+            // Nur bei größeren Änderungen reagieren
+            document.dispatchEvent(new CustomEvent('optimizedResize'));
+        }, 150);
+    });
+    
+    // Optimierte Animation-Callbacks
+    let animationFrame;
+    const scheduleAnimation = (callback) => {
+        if (animationFrame) {
+            cancelAnimationFrame(animationFrame);
+        }
+        animationFrame = requestAnimationFrame(callback);
+    };
+    
+    // Performance-Monitor (nur in Development)
+    if (window.location.hostname === 'localhost' || window.location.hostname === '127.0.0.1') {
+        let performanceWarnings = 0;
+        const maxWarnings = 5;
+        
+        const checkPerformance = () => {
+            if (performance.now() > 16 && performanceWarnings < maxWarnings) {
+                console.warn('🐌 Performance: Frame took longer than 16ms');
+                performanceWarnings++;
+            }
+        };
+        
+        // Performance-Monitoring nur in Development
+        setInterval(checkPerformance, 1000);
+    }
+    
+    // Graceful Degradation für ältere Browser
+    if (!window.CSS || !CSS.supports || !CSS.supports('backdrop-filter', 'blur(1px)')) {
+        document.documentElement.classList.add('no-backdrop-filter');
+    }
+    
+    // Memory-Optimierung für Event Listeners
+    const eventOptions = { passive: true };
+    
+    // Optimierte Scroll-Handler
+    let scrollTimeout;
+    window.addEventListener('scroll', () => {
+        clearTimeout(scrollTimeout);
+        scrollTimeout = setTimeout(() => {
+            document.dispatchEvent(new CustomEvent('optimizedScroll'));
+        }, 10);
+    }, eventOptions);
+    
+    console.log('✨ Performance-Optimierungen geladen:', {
+        lowPerformance: isLowPerformanceDevice(),
+        backropFilter: CSS.supports('backdrop-filter', 'blur(1px)'),
+        memory: navigator.deviceMemory || 'unknown',
+        cores: navigator.hardwareConcurrency || 'unknown'
+    });
+})();