ADR-010: macOS sidecar architecture strategy

Status: Accepted (initial)

Context

Open Question 12: universal macOS artifact or separate Apple Silicon / Intel?

Decision

For the first release, build the PyInstaller sidecar per host architecture and bundle it as a Tauri externalBin with a target-triple suffix. A universal (lipo-merged) binary is deferred until multi-arch CI is in place.

Consequences

• scripts/build_sidecar.py names output by target triple.
• Cross-arch universal packaging is future work (Phase 16).