Fix agentpipe-bin install path

pkgs/agentpipe-bin.nix

@@ -0,0 +1,47 @@
+{ lib, stdenvNoCC, fetchurl }:
+
+stdenvNoCC.mkDerivation (finalAttrs: {
+  pname = "agentpipe";
+  version = "0.7.0";
+
+  src = fetchurl {
+    url =
+      "https://github.com/kevinelliott/agentpipe/releases/download/v${finalAttrs.version}/agentpipe_linux_amd64.tar.gz";
+  sha256 ="sha256-3ofsrInUlcY1UN6LszOZGYJY0SgNB8FTwlyOXx/cznk="; 
+  };
+
+  dontConfigure = true;
+  dontBuild = true;
+
+unpackPhase = ''
+  tar -xzf "$src"
+'';
+
+installPhase = ''
+  mkdir -p "$out/bin"
+
+  bin=""
+  if [ -f "./agentpipe" ]; then
+    bin="./agentpipe"
+  else
+    bin="$(find . -maxdepth 3 -type f -name agentpipe -print -quit)"
+  fi
+
+  if [ -z "$bin" ]; then
+    echo "agentpipe binary not found after unpack. Contents:" >&2
+    find . -maxdepth 3 -type f -print >&2
+    exit 1
+  fi
+
+  install -m0755 "$bin" "$out/bin/agentpipe"
+'';
+
+
+  meta = with lib; {
+    description = "AgentPipe multi-agent orchestrator CLI/TUI";
+    homepage = "https://github.com/kevinelliott/agentpipe";
+    license = licenses.mit;
+    platforms = [ "x86_64-linux" ];
+    mainProgram = "agentpipe";
+  };
+})