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

profiles/desktop.json

@@ -0,0 +1,81 @@
+{
+  "_comment": "Desktop/Workstation Optimization Profile - Optimized for general desktop use with focus on responsiveness",
+  "profile_name": "desktop",
+  "description": "General desktop optimization for workstations",
+  "target_systems": [
+    "Desktop computers",
+    "Workstations",
+    "General purpose laptops"
+  ],
+  "requirements": {
+    "min_ram_gb": 4,
+    "recommended_ram_gb": 8
+  },
+  "optimizations": {
+    "zram": {
+      "enabled": true,
+      "size_formula": "min(ram_gb * 0.75, 12)G",
+      "compression_algorithm": "lz4"
+    },
+    "tmpfs": {
+      "browser_cache": {
+        "enabled": true,
+        "size": "auto",
+        "paths": [
+          "/tmp/tmpfs-cache/browser"
+        ]
+      },
+      "ide_cache": {
+        "enabled": true,
+        "size": "1G",
+        "paths": [
+          "/tmp/tmpfs-cache/vscode",
+          "/tmp/tmpfs-cache/jetbrains"
+        ]
+      },
+      "package_cache": {
+        "enabled": true,
+        "size": "2G",
+        "bind_mounts": [
+          "/var/cache/apt",
+          "/var/cache/pacman/pkg"
+        ]
+      },
+      "thumbnails": {
+        "enabled": true,
+        "size": "256M",
+        "paths": [
+          "/tmp/tmpfs-cache/thumbnails"
+        ]
+      }
+    },
+    "kernel_parameters": {
+      "vm.swappiness": 5,
+      "vm.dirty_ratio": 5,
+      "vm.dirty_background_ratio": 2,
+      "vm.vfs_cache_pressure": 50,
+      "vm.page-cluster": 0,
+      "net.core.netdev_max_backlog": 5000,
+      "net.core.rmem_max": 16777216,
+      "net.core.wmem_max": 16777216
+    },
+    "overlayfs": {
+      "enabled": false,
+      "protect_configs": false
+    }
+  },
+  "sizing_rules": {
+    "browser_cache": {
+      "ram_4gb": "512M",
+      "ram_8gb": "1G",
+      "ram_16gb": "2G",
+      "ram_32gb": "4G"
+    },
+    "zram_size": {
+      "ram_4gb": "3G",
+      "ram_8gb": "6G",
+      "ram_16gb": "12G",
+      "ram_32gb": "16G"
+    }
+  }
+}