diff --git a/flake.nix b/flake.nix
index 49664cc..ff0dd48 100644
--- a/flake.nix
+++ b/flake.nix
@@ -22,9 +22,19 @@
       inputs.nixpkgs.follows = "nixpkgs";
       inputs.quickshell.follows = "quickshell";
     };
+
+    nix-gaming = {
+      url = "github:fufexan/nix-gaming";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+
+    home-manager = {
+      url = "github:nix-community/home-manager";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
   };
 
-  outputs = { self, nixpkgs, mango, quickshell, noctalia, ... }@inputs:
+  outputs = { self, nixpkgs, mango, quickshell, noctalia, nix-gaming, home-manager, ... }@inputs:
   let
     system = "x86_64-linux";
     lib = nixpkgs.lib;
@@ -34,11 +44,17 @@
     mangoModule = assert lib.hasAttrByPath [ "nixosModules" "mango" ] mango;
       mango.nixosModules.mango;
 
-    # IMPORTANT: Replace <hostname> with actual hostname
     commonModules = [
-      ./hosts/<hostname>/hardware-configuration.nix
+      ./hosts/atlas/hardware-configuration.nix
       ./modules/common.nix
       mangoModule
+      # Home Manager module - Foundation for user-level package management
+      # User-specific configurations can be added via home-manager.users.<username>
+      home-manager.nixosModules.home-manager
+      {
+        home-manager.useGlobalPkgs = true;
+        home-manager.useUserPackages = true;
+      }
     ];
   in {
     nixosConfigurations = {
diff --git a/hosts/hostname/hardware-configuration.nix b/hosts/atlas/hardware-configuration.nix
similarity index 100%
rename from hosts/hostname/hardware-configuration.nix
rename to hosts/atlas/hardware-configuration.nix
diff --git a/modules/common.nix b/modules/common.nix
index 47c4eb7..cb1413e 100644
--- a/modules/common.nix
+++ b/modules/common.nix
@@ -10,13 +10,32 @@
   # --------------------------------------------------------------------------
   # SYSTEM
   # --------------------------------------------------------------------------
-  # IMPORTANT: Replace with actual values
-  networking.hostName = "<hostname>";
-  time.timeZone = "<timezone>";
-  i18n.defaultLocale = "<locale>";
+  networking.hostName = "atlas";
+  time.timeZone = "Europe/Berlin";
+  i18n.defaultLocale = "en_US.UTF-8";
+
+  # German keyboard layout (nodeadkeys variant)
+  console.keyMap = "de-latin1-nodeadkeys";
+  services.xserver.xkb = {
+    layout = "de";
+    variant = "nodeadkeys";
+  };
 
   networking.networkmanager.enable = true;
 
+  # Memory compression (reduces swap usage)
+  zramSwap = {
+    enable = true;
+    algorithm = "zstd";
+    memoryPercent = 50;
+  };
+
+  # Firmware updates
+  services.fwupd.enable = true;
+
+  # Power profiles daemon (for laptop/power management)
+  services.power-profiles-daemon.enable = true;
+
   # --------------------------------------------------------------------------
   # AMD GPU - RDNA 4 (RX 9060 XT) + Zen 3 CPU (5700G)
   # --------------------------------------------------------------------------
@@ -42,6 +61,13 @@
   # This variable is optional but makes it explicit
   environment.variables.AMD_VULKAN_ICD = "RADV";
 
+  # Wayland session variables for proper app integration
+  environment.sessionVariables = {
+    QT_QPA_PLATFORM = "wayland";
+    MOZ_ENABLE_WAYLAND = "1";
+    NIXOS_OZONE_WL = "1";  # Electron apps (VS Code, Discord, etc.)
+  };
+
   # --------------------------------------------------------------------------
   # CPU - Zen 3 Optimizations (Ryzen 7 5700G)
   # --------------------------------------------------------------------------
@@ -75,16 +101,14 @@
     enable = true;
     settings.default_session = {
       command = "mango";
-      # IMPORTANT: Replace <username> with actual username
-      user = "<username>";
+      user = "pinj";
     };
   };
 
   # --------------------------------------------------------------------------
   # USER ACCOUNT
   # --------------------------------------------------------------------------
-  # IMPORTANT: Replace <username> with actual username
-  users.users.<username> = {
+  users.users.pinj = {
     isNormalUser = true;
     extraGroups = [ "wheel" "networkmanager" "video" "seat" ];
     # IMPORTANT: Generate a password hash with: mkpasswd -m sha-512
@@ -151,6 +175,13 @@
     alsa.enable = true;
     alsa.support32Bit = true;
     pulse.enable = true;
+    
+    # Low-latency configuration for gaming
+    lowLatency = {
+      enable = true;
+      quantum = 64;      # Buffer size (lower = less latency)
+      rate = 48000;      # Sample rate
+    };
   };
 
   # Disable PulseAudio (conflicts with PipeWire)
diff --git a/modules/dev.nix b/modules/dev.nix
index bcf47d9..55c183e 100644
--- a/modules/dev.nix
+++ b/modules/dev.nix
@@ -22,10 +22,9 @@
     };
   };
 
-  # IMPORTANT: Replace <username> with actual username
   # NOTE: After first enabling/applying this dev profile, you must log out and
   # log back in (or reboot) for the docker group membership to take effect.
-  users.users.<username>.extraGroups = [ "docker" ];
+  users.users.pinj.extraGroups = [ "docker" ];
 
   # --------------------------------------------------------------------------
   # DEVELOPMENT TOOLS
@@ -35,11 +34,12 @@
     nix-direnv.enable = true;  # Caches nix shells
   };
 
-  # IMPORTANT: Replace <username> with actual username
-  users.users.<username>.packages = with pkgs; [
+  users.users.pinj.packages = with pkgs; [
     # -- Git --
     lazygit
     gh              # GitHub CLI
+    delta           # Git diff viewer
+    meld            # Visual diff tool
 
     # -- Node.js --
     nodejs_22
@@ -56,10 +56,11 @@
     bat             # cat alternative
     fzf             # Fuzzy finder
     zoxide          # cd alternative
-    delta           # Git diff viewer
 
-    # -- Database Clients --
+    # -- Database & API Tools --
     postgresql      # psql client
+    dbeaver-bin     # Database GUI
+    insomnia        # API testing
     # redis          # Uncomment if needed
 
     # -- Misc --
diff --git a/modules/gaming.nix b/modules/gaming.nix
index ad40843..b93f913 100644
--- a/modules/gaming.nix
+++ b/modules/gaming.nix
@@ -1,9 +1,18 @@
-{ pkgs, ... }:
+{ pkgs, inputs, ... }:
 
 {
   # Identification tags (shows in boot menu)
   system.nixos.tags = [ "gaming" "zen" ];
 
+  # --------------------------------------------------------------------------
+  # NIX-GAMING PLATFORM OPTIMIZATIONS
+  # --------------------------------------------------------------------------
+  imports = [
+    inputs.nix-gaming.nixosModules.platformOptimisations
+  ];
+  
+  nix-gaming.platformOptimisations.enable = true;
+
   # --------------------------------------------------------------------------
   # KERNEL - Zen for gaming performance
   # --------------------------------------------------------------------------
@@ -53,17 +62,16 @@
   # programs to function correctly. These groups are only added when using
   # the gaming profile. If you need consistent group membership across
   # both profiles, add these groups to common.nix instead.
-  # IMPORTANT: Replace <username> with actual username
-  users.users.<username>.extraGroups = [ "corectrl" "gamemode" ];
+  users.users.pinj.extraGroups = [ "corectrl" "gamemode" ];
 
   # --------------------------------------------------------------------------
   # GAMING PACKAGES
   # --------------------------------------------------------------------------
-  # IMPORTANT: Replace <username> with actual username
-  users.users.<username>.packages = with pkgs; [
+  users.users.pinj.packages = with pkgs; [
     # -- Performance Overlays --
     mangohud        # FPS counter, GPU stats
     goverlay        # MangoHud GUI config
+    vkbasalt        # Vulkan post-processing (sharpening, CAS)
 
     # -- Game Launchers --
     lutris          # Multi-platform launcher
@@ -78,6 +86,10 @@
     # -- Utilities --
     gamescope       # Micro-compositor for gaming
     corectrl        # AMD GPU control GUI
+    lact            # Linux AMDGPU Control Tool (alternative to CoreCtrl)
+    
+    # -- Communication --
+    discord         # Voice chat and gaming communities
 
     # -- Optional Game Clients --
     # prismlauncher # Minecraft