Add CI workflow, install.sh, and example config

install.sh

@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+# Install script for kctl-tui.
+# Downloads the latest GitHub release binary matching the current OS/arch
+# and installs it to /usr/local/bin (or $INSTALL_DIR if set).
+#
+# Usage:
+#   curl -fsSL https://raw.githubusercontent.com/skoelle/kctl-tui/main/install.sh | bash
+#
+# Requires: curl, a supported OS (linux, darwin).
+# Native Windows is not supported by this script; use WSL, or download the
+# .exe asset manually from the Releases page.
+
+set -euo pipefail
+
+REPO="skoelle/kctl-tui"
+INSTALL_DIR="${INSTALL_DIR:-/usr/local/bin}"
+BIN_NAME="kctl-tui"
+
+os="$(uname -s | tr '[:upper:]' '[:lower:]')"
+arch="$(uname -m)"
+
+case "$arch" in
+  x86_64|amd64) arch="amd64" ;;
+  arm64|aarch64) arch="arm64" ;;
+  *)
+    echo "Unsupported architecture: $arch" >&2
+    exit 1
+    ;;
+esac
+
+case "$os" in
+  linux|darwin) ;;
+  *)
+    echo "Unsupported OS: $os. On Windows, use WSL or download the .exe from the Releases page." >&2
+    exit 1
+    ;;
+esac
+
+echo "Detecting latest release for $REPO ..."
+latest_tag="$(curl -fsSL "https://api.github.com/repos/${REPO}/releases/latest" | grep -m1 '"tag_name"' | sed -E 's/.*"([^"]+)".*/\1/')"
+
+if [ -z "$latest_tag" ]; then
+  echo "Could not determine latest release tag. Is there at least one published release?" >&2
+  exit 1
+fi
+
+asset="kctl-tui-${os}-${arch}"
+url="https://github.com/${REPO}/releases/download/${latest_tag}/${asset}"
+
+echo "Downloading ${asset} (${latest_tag}) ..."
+tmp_file="$(mktemp)"
+curl -fsSL "$url" -o "$tmp_file"
+chmod +x "$tmp_file"
+
+if [ -w "$INSTALL_DIR" ]; then
+  mv "$tmp_file" "${INSTALL_DIR}/${BIN_NAME}"
+else
+  echo "Elevated permissions required to write to ${INSTALL_DIR}"
+  sudo mv "$tmp_file" "${INSTALL_DIR}/${BIN_NAME}"
+fi
+
+echo "Installed ${BIN_NAME} to ${INSTALL_DIR}/${BIN_NAME}"
+"${INSTALL_DIR}/${BIN_NAME}" --help >/dev/null 2>&1 || true
+echo "Done. Run '${BIN_NAME}' to get started."