refactor: reorganize, add package (opencode, osgrep, beads), add ai agent shell

packages/osgrep.nix

@@ -0,0 +1,32 @@
+{ lib, buildNpmPackage, fetchurl, python3 }:
+
+buildNpmPackage rec {
+  pname = "osgrep";
+  version = "0.5.16";
+
+  src = fetchurl {
+    url = "https://registry.npmjs.org/${pname}/-/${pname}-${version}.tgz";
+    hash = "sha256-V23PNxtMCdRaqr4uDOs0rptmSROUrUO7I9HazoGqUCQ=";
+  };
+
+  sourceRoot = "package";
+
+  postPatch = ''
+    cp ${./osgrep-package-lock.json} package-lock.json
+  '';
+
+  npmDepsHash = "sha256-JDeZ3kcsbcZM//0846i1gsvoAgMpIpN8c160cp7wB5s=";
+
+  npmFlags = [ "--legacy-peer-deps" ];
+
+  dontNpmBuild = true; # Already built in npm package
+
+  nativeBuildInputs = [ python3 ];
+
+  meta = {
+    description = "Semantic grep for AI agents";
+    homepage = "https://github.com/Ryandonofrio3/osgrep";
+    license = lib.licenses.asl20;
+    mainProgram = "osgrep";
+  };
+}