feat: TypeScript installation wizard with @clack/prompts TUI (#1)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

bin/mosaic-wizard

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# mosaic-wizard — Thin shell wrapper for the bundled TypeScript wizard
+MOSAIC_HOME="${MOSAIC_HOME:-$HOME/.config/mosaic}"
+
+# Look for the bundle in the installed location first, then the source repo
+WIZARD_BIN="$MOSAIC_HOME/dist/mosaic-wizard.mjs"
+if [[ ! -f "$WIZARD_BIN" ]]; then
+  WIZARD_BIN="$(cd "$(dirname "$0")/.." && pwd)/dist/mosaic-wizard.mjs"
+fi
+
+if [[ ! -f "$WIZARD_BIN" ]]; then
+  echo "[mosaic-wizard] ERROR: Wizard bundle not found." >&2
+  echo "[mosaic-wizard] Run 'pnpm build' in the mosaic-bootstrap repo, or re-install Mosaic." >&2
+  exit 1
+fi
+
+if ! command -v node >/dev/null 2>&1; then
+  echo "[mosaic-wizard] ERROR: Node.js is required but not found." >&2
+  echo "[mosaic-wizard] Install Node.js 18+ from https://nodejs.org" >&2
+  exit 1
+fi
+
+exec node "$WIZARD_BIN" "$@"