Add project skills to dev shell

flake.nix

@@ -4,6 +4,11 @@
   inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
   inputs.flake-utils.url = "github:numtide/flake-utils";
 
+  inputs.gitea-axi = {
+    url = "git+https://git.alexion.dev/alexion/gitea-axi";
+    inputs.nixpkgs.follows = "nixpkgs";
+  };
+
   # Present only so `nix flake check` can evaluate `homeModules.default` against
   # real home-manager (the home-manager-module check). Its nixpkgs follows this
   # flake's, so the module is checked against the same nixpkgs-and-home-manager
@@ -14,7 +19,7 @@
   inputs.home-manager.inputs.nixpkgs.follows = "nixpkgs";
 
   outputs =
-    { self, nixpkgs, flake-utils, home-manager }:
+    { self, nixpkgs, flake-utils, home-manager, gitea-axi }:
     let
       mkSkill = import ./lib/mk-skill.nix;
       mkSkillsShellHook = import ./lib/mk-skills-shell-hook.nix;
@@ -94,12 +99,18 @@
           };
 
           # A working shell for developing skills in this repo.
-          # python3 runs the benchmark skill's deterministic core.
-          # The benchmark-skill is placed into ./.agents/skills/ on entry, with
+          # Python runs the benchmark core, while gitea-axi backs its project skill.
+          # Both project skills are placed into ./.agents/skills/ on entry, with
           # ./.claude/skills as a compatibility symlink.
           devShells.default = pkgs.mkShell {
-            packages = [ pkgs.python3 ];
-            shellHook = mkSkillsShellHook [ (skillPackages pkgs).benchmark-skill ];
+            packages = [
+              pkgs.python3
+              gitea-axi.packages.${system}.gitea-axi
+            ];
+            shellHook = mkSkillsShellHook [
+              gitea-axi.packages.${system}.gitea-axi-skill
+              (skillPackages pkgs).benchmark-skill
+            ];
           };
         }
       );