Design accepted 2026-05-01. Locks in 5 architectural decisions
(GUI-only, UAC-per-launch, no DPI bypass, hide-to-tray with toast,
contextual recovery) and decomposes Phase 2 into 5 milestones with
explicit acceptance criteria + a 30-row edge case matrix.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
