deploy/bootstrap.sh: warn() is not defined, so a warning stops the bootstrap #128

deploy/bootstrap.sh calls warn at three lines, but the script defines only ok, fail and info (L80-82).

• L519: ... || warn "cfn-bootstrap install failed ..."
• L558: warn "User runtime dir not ready after 30s ..."
• L640: warn "No shell profile found for pack ${PACK_NAME}"

Problem: The script runs with set -euo pipefail. When one of these lines runs, bash gives "warn: command not found" (exit 127). The ERR trap then marks the bootstrap as FAILED. A message that must be only a warning stops the full deploy. For example, a pack with no resources/shell-profile.sh gets to line 640.

Fix: Add one line after line 82:

warn() { echo "[WARN]  $(date -u '+%H:%M:%S') $1"; }

Found by a code read at commit 1e50295. The code was read, but not run on a real instance.