init: added flake.nix and shell home module

.gitignore

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+flake.lock

flake.nix

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+{
+    description = "Core nixos and home-manager modules for use across systems";
+
+    inputs = {
+        nixpkgs.url = "nixpkgs/nixos-26.05";
+        home-manager = {
+            url = "github:nix-community/home-manager/release-26.05";
+            inputs.nixpkgs.follows = "nixpkgs";
+        };
+    };
+    outputs = { self, nixpkgs, home-manager }:
+        let
+            system = "x86_64-linux";
+            pkgs = nixpkgs.legacyPackages.${system};
+        in {
+            homeConfigurations = {
+                shell = home-manager.lib.homeManagerConfiguration {
+                    inherit pkgs;
+                    modules = [
+                        ./home/modules/shell.nix
+                    ];
+                };
+            };
+    };
+}

home/shell.nix

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+# Universal shell tools and configuration
+{ pkgs, config, ... }:
+
+let
+    name = "${config.home.username}";
+    homeDir = "${config.home.homeDirectory}";
+    myAliases = {
+        ll = "ls -hl";
+        la = "ls -ahl";
+        cl = "clear; ls -hl";
+        cla = "clear; ls -ahl";
+        home-manager = "home-manager -b \"hm-backup\"";
+        home-switch = "home-manager -b \"hm-backup\" switch --flake ~/.dotfiles";
+        gdiff = "git diff HEAD";
+        cdot = "cd ${homeDir}/.dotfiles";
+        cg = "cd $(git rev-parse --show-toplevel)";
+        sudo = "sudo TERMINFO=\"$TERMINFO\"";
+    };
+in
+{
+    home = {
+        sessionVariables = {
+            EDITOR = "nvim";
+            XDG_CONFIG_HOME = "${homeDir}/.config";
+            DOTFILES = "${homeDir}/.dotfiles";
+            UTILITY = "${homeDir}/.dotfiles/scripts/utility";
+            ZVM_VI_INSERT_ESCAPE_BINDKEY = "jk";
+        };
+        packages = with pkgs; [
+            unzip # decompress files
+            hyfetch # pretty system display tool
+            tree # recursive directory list
+            glow # cli markdown display tool
+            lynx # cli web browser
+            lua5_5 # scripting language
+            htop # system monitor
+            file # identify file type
+            sops # secret management tool
+        ];
+    };
+    
+    programs = {
+        zsh = {
+            enable = true;
+            enableCompletion = true;
+            autosuggestion.enable = true;
+            syntaxHighlighting.enable = true;
+            shellAliases = myAliases;
+            history.size = 10000;
+            setOptions = [ "NO_BEEP" ];
+            plugins = [
+                {
+                    name = "vi-mode";
+                    src = pkgs.zsh-vi-mode;
+                    file = "share/zsh-vi-mode/zsh-vi-mode.plugin.zsh";
+                }
+            ];
+        };
+        git = {
+            enable = true;
+            settings.user = {
+                inherit name;
+                email = config.accounts.email.accounts.${name}.address;
+            };
+        };
+        starship = {
+            enable = true;
+            enableZshIntegration = true;
+        };
+        yazi = {
+            enable = true;
+            shellWrapperName = "y";
+            enableZshIntegration = true;
+            plugins = {
+                git = {
+                    package = pkgs.yaziPlugins.git;
+                    setup = true;
+                    settings = {
+                        order = 1500;
+                    };
+                };
+            };
+            settings = fromTOML ''
+                [[plugin.prepend_fetchers]]
+                url = "*"
+                run = "git"
+                group = "git"
+
+                [[plugin.prepend_fetchers]]
+                url = "*/"
+                run = "git"
+                group = "git"
+            '';
+        };
+
+    };
+}