Nain development build 43

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

Source: 3a92ff4fb69cf7a70bdf5f3a2e0b19443917a5d8

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.