feat(agents): add slice skill

flake.lock

@@ -562,11 +562,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1785545174,
-        "narHash": "sha256-XqpwTldqFQapp14aDFOxSpwnEQykahB/w/f54f6qLqA=",
+        "lastModified": 1785555403,
+        "narHash": "sha256-fFNR+/28b38Y90CcdLpLUuy327eYZrFlw6hYrCIBNh0=",
         "ref": "refs/heads/main",
-        "rev": "99df169fbddfa121fbbf782f1a1095c8f6f6494b",
-        "revCount": 47,
+        "rev": "f283646124403bffa6bda73954d8480235f97990",
+        "revCount": 48,
         "type": "git",
         "url": "https://git.alexion.dev/alexion/skills"
       },

modules/agents/skills.nix

@@ -12,13 +12,14 @@ let
   # The skills installed globally, as derivations from the skills flake.
   # grill interviews the operator relentlessly to resolve a plan before building.
   # design-skill drafts and audits Agent Skills for structural predictability.
-  # wayfinder, research, and prototype guide work from exploration through validation.
+  # wayfinder, research, prototype, and slice guide work from exploration through implementation tickets.
   skills = with inputs.skills.packages.${pkgs.stdenv.hostPlatform.system}; [
     grill
     design-skill
     wayfinder
     research
     prototype
+    slice
   ];
 in
 {