fix(macos): restore native menu bar behavior

[andrei-hasna]

Summary

• install native CodeWith, Edit, and Window menus before the AppKit run loop
• honor persisted desktop.showMenuBar without forcing the status item on at launch, including default fallback paths
• deminiaturize the existing main window before bringing it forward

Tests

• added AppKit menu construction and minimized-window restoration regressions
• added default menu-bar preference publication regression
• git diff --check passed
• staged gitleaks scan: no leaks
• macOS Swift test/build pending on an authenticated Apple runner (the Linux implementation host has no Swift toolchain; direct Apple routes were unavailable)

Tracking

Todos: 6d9a39b3-42b4-4b90-9f3b-3bdafff9454c
Native plan: 74793296-cc3a-429a-8495-f032ad014cee

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