More installation scripts

install/gemini-cli.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# https://github.com/google-gemini/gemini-cli
+
+set -E -o errexit -o nounset -o pipefail
+set -x
+
+npm install -g @google/gemini-cli

install/npm.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+# https://github.com/nvm-sh/nvm
+
+set -E -o errexit -o nounset -o pipefail
+set -x
+
+curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.3/install.sh | bash
+nvm install node
+nvm use node