nain development build 42

Development packages for Apple Silicon and Intel Macs. AI and telemetry are disabled.

Source: b8284344e9bbfe6e842101b9d1c0ad7b13676d8b

Validated build and runtime reports

These packages use ad-hoc signatures and are not Apple-notarized. Automatic updates are disabled; install development versions manually. Apple signing and notarization remain a separate manual release workflow.