feat(ai): add 'ai-tools' 'skills' submodule

home/modules/ai-tools/default.nix

@@ -2,6 +2,7 @@
   imports = [
     ./claude-code.nix
     ./opencode.nix
+    ./skills.nix
     ./tirith.nix
   ];
 }

home/modules/ai-tools/skills.nix

@@ -0,0 +1,49 @@
+{
+  lib,
+  config,
+  pkgs,
+  ...
+}:
+let
+  cfg = config.ai-tools.claude-code;
+
+  skillType = lib.types.submodule {
+    options = {
+      owner = lib.mkOption { type = lib.types.str; };
+      repo = lib.mkOption { type = lib.types.str; };
+      rev = lib.mkOption { type = lib.types.str; };
+      hash = lib.mkOption { type = lib.types.str; };
+      skill = lib.mkOption { type = lib.types.str; };
+    };
+  };
+
+  fetchSkill =
+    skill:
+    let
+      src = pkgs.fetchFromGitHub {
+        inherit (skill)
+          owner
+          repo
+          rev
+          hash
+          ;
+      };
+    in
+    {
+      name = ".claude/skills/${skill.skill}";
+      value = {
+        source = "${src}/${skill.skill}";
+        recursive = true;
+      };
+    };
+in
+{
+  options.ai-tools.claude-code.skills = lib.mkOption {
+    type = lib.types.listOf skillType;
+    default = [ ];
+  };
+
+  config = lib.mkIf cfg.enable {
+    home.file = builtins.listToAttrs (map fetchSkill cfg.skills);
+  };
+}