Fix build.sh silently aborting when no signing identity is present

[sjmadministration-hub]

Bug

scripts/build.sh silently aborts right after Assembling .app bundle... when the machine has no Developer ID Application / Apple Development signing identity installed — i.e. the common case for anyone building without a paid Apple Developer account.

Cause

IDENTITY=$(security find-identity -v -p codesigning 2>/dev/null \
    | grep -oE '"(Developer ID Application|Apple Development)[^"]*"' \
    | head -1 | tr -d '"')

The script runs under set -euo pipefail. When grep finds no match it exits 1, which — under pipefail — makes the whole pipeline (and therefore the IDENTITY=$(...) assignment) exit 1. Under set -e that terminates the script immediately, before the ad-hoc signing fallback a few lines below ever runs. No error message is printed, so it just looks like the script hung or exited for no reason.

Reproduced via scripts/install.sh on a clean machine with no signing certs: build completes, "Assembling .app bundle..." prints, then the process exits with status 1 and nothing after that line.

Fix

Append || true to the pipeline so a missing identity just leaves IDENTITY empty and falls through to the intended ad-hoc signing branch, instead of aborting the script.

Tested locally: with the fix, scripts/install.sh completes end-to-end (build, ad-hoc sign, install to /Applications, hook + settings.json setup) on a machine with no signing identity.