Add GSP init and AI usage tooling

toolkit/scripts/install.sh

@@ -0,0 +1,27 @@
+#!/usr/bin/env sh
+set -eu
+
+SCRIPT_DIR=$(CDPATH= cd -- "$(dirname -- "$0")" && pwd)
+TOOLKIT_DIR=$(CDPATH= cd -- "$SCRIPT_DIR/.." && pwd)
+INSTALL_DIR=${GSP_INSTALL_DIR:-"$HOME/.gsp/bin"}
+TARGET="$INSTALL_DIR/gsp"
+
+mkdir -p "$INSTALL_DIR"
+
+(
+  cd "$TOOLKIT_DIR"
+  go build -o "$TARGET" ./cmd/gsp
+)
+
+chmod +x "$TARGET"
+
+echo "Installed gsp to $TARGET"
+case ":$PATH:" in
+  *":$INSTALL_DIR:"*) ;;
+  *)
+    echo "Add this to your shell profile if gsp is not found:"
+    echo "export PATH=\"$INSTALL_DIR:\$PATH\""
+    ;;
+esac
+
+"$TARGET" version