fix(installer): default install dir to ~/rune-vault for all platforms (#57)

On macOS, Docker Desktop with VirtioFS cannot mount bind volumes under
/opt/ because VirtioFS only shares paths within the user's home directory.
Unify the default install directory to $HOME/rune-vault, consistent with
CSP deployments which already use $HOME-based paths. Also fix install-dev.sh
to resolve the invoking user's home under sudo instead of root's home.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: jh-lee-cryptolab

install.sh

@@ -26,7 +26,8 @@ done
 
 REPO="CryptoLabInc/rune-admin"
 DOCKER_IMAGE="ghcr.io/cryptolabinc/rune-vault"
-DEFAULT_INSTALL_DIR="/opt/rune-vault"
+_user_home="${SUDO_USER:+$(eval echo ~"$SUDO_USER")}"
+DEFAULT_INSTALL_DIR="${_user_home:-$HOME}/rune-vault"
 VAULT_PUBLIC_IP=""
 CSP_CA_CERT_LOCAL=""
 

scripts/install-dev.sh

@@ -32,7 +32,8 @@ DOCKER_IMAGE="ghcr.io/cryptolabinc/rune-vault"
 GIT_BRANCH="$(git -C "$REPO_ROOT" rev-parse --abbrev-ref HEAD | sed 's|/|-|g')"
 GIT_COMMIT="$(git -C "$REPO_ROOT" rev-parse --short HEAD)"
 DOCKER_TAG="${GIT_BRANCH}-${GIT_COMMIT}"
-DEFAULT_INSTALL_DIR="$HOME/rune-vault-dev"
+_user_home="${SUDO_USER:+$(eval echo ~"$SUDO_USER")}"
+DEFAULT_INSTALL_DIR="${_user_home:-$HOME}/rune-vault-dev"
 VAULT_PUBLIC_IP=""
 CSP_CA_CERT_LOCAL=""