refactor(ai): rename misc.nix to workflows.nix

- Rename file to better reflect purpose (workflow tools)
- Add ralph CLI tool for Ralph Wiggum orchestration
- Add beads and bv-bin packages for memory management

Author: DivitMittal

home/ai/misc.nix home/ai/workflows.nixhome/ai/misc.nix renamed to home/ai/workflows.nix

@@ -4,12 +4,22 @@
   ...
 }: {
   home.packages = lib.attrsets.attrValues {
+    ## Spec-driven Development
     # inherit(pkgs.ai)
     #   ## Spec-driven tools
     #   #spec-kit
     #   ;
     openspec = pkgs.writeShellScriptBin "openspec" ''
       exec ${pkgs.uv}/bin/uv tool run @fission-ai/openspec@latest "$@"
     '';
+
+    ## Ralph Wiggum
+    ralph = pkgs.writeShellScriptBin "ralph" ''
+      exec ${pkgs.uv}/bin/uv tool --from ralph-orchestrator run ralph "$@"
+    '';
+
+    ## Memory System
+    inherit (pkgs) beads;
+    inherit (pkgs.custom) bv-bin;
   };
 }