feat: copilot cli, tool fixes

script/install.d/23-copilot.sh

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+# -----------------------------------------------------------------------------
+# Description:
+#   Install GitHub Copilot CLI.
+#
+
+if ! command -v copilot &>/dev/null; then
+    if command -v npm &>/dev/null; then
+        npm install -g @github/copilot
+    else
+        log_warn "Skipping GitHub Copilot CLI install: npm not found"
+    fi
+fi
+
+copilot --version