Complete Linux system optimization suite with tmpfs, zram, and German locale support

- Fixed missing setup_tmpfs() function that was causing silent failures
- Added comprehensive system scanning for browsers, IDEs, gaming caches
- Implemented detailed optimization information display for transparency
- Added German locale compatibility for 'free' command (Speicher: vs Mem:)
- Fixed division by zero errors in RAM calculations
- Created tmpfs-info.sh helper script for detailed status reporting
- Enhanced scanning to work on already-optimized systems
- Added comprehensive optimization breakdowns with purpose explanations

test-ram-display-fix.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+# Test RAM calculation and display fixes
+
+echo "🧪 Testing RAM Display Fixes"
+echo "============================"
+echo ""
+
+echo "Current system RAM detection:"
+ram_gb=$(free -g | awk '/^Mem:/{print $2}')
+ram_mb=$(free -m | awk '/^Mem:/{print $2}')
+
+echo "  free -g result: ${ram_gb}GB"
+echo "  free -m result: ${ram_mb}MB"
+echo ""
+
+echo "Testing the enhanced logic:"
+
+# Simulate the fixed logic
+if [[ $ram_gb -eq 0 && $ram_mb -gt 0 ]]; then
+    echo "  Detected edge case: free -g returned 0"
+    ram_gb_fixed=$((ram_mb / 1024))
+    [[ $ram_gb_fixed -eq 0 ]] && ram_gb_fixed=1
+    echo "  Fixed ram_gb: ${ram_gb_fixed}GB (calculated from ${ram_mb}MB)"
+else
+    ram_gb_fixed=$ram_gb
+    echo "  Normal case: ram_gb = ${ram_gb_fixed}GB"
+fi
+
+echo ""
+
+# Test percentage calculation
+total_mb=12800
+echo "Testing percentage calculation with ${total_mb}MB tmpfs:"
+
+if [[ $ram_gb_fixed -gt 0 ]]; then
+    ram_percent=$(( (total_mb * 100) / (ram_gb_fixed * 1024) ))
+    echo "  Result: ${total_mb}MB is ${ram_percent}% of ${ram_gb_fixed}GB RAM ✅"
+else
+    echo "  Error: Still would cause division by zero ❌"
+fi
+
+echo ""
+echo "Display output test:"
+echo "   📊 Total tmpfs allocation: ${total_mb}MB (${ram_percent}% of ${ram_gb_fixed}GB RAM)"
+echo "   ⚡ Combined benefit: Optimized memory management for your ${ram_gb_fixed}GB system"
+
+echo ""
+echo "✅ Fixed issues:"
+echo "  1. No more '0% of GB RAM' display"
+echo "  2. No more 'GB system' without number"
+echo "  3. Proper fallback from MB to GB calculation"
+echo "  4. Minimum 1GB display for edge cases"