[Application] Run staged scenarios as batch

[SilverSupplier]

Summary

• Run all staged runnable scenarios as a domain-backed batch instead of selecting only the first staged baseline.
• Add batch run state persistence, a lightweight run workspace with selectable scenario cards, and a comparison result view.
• Add scenario diff/batch runner coverage and wire the new domain/application sources into CMake.

Related Issue

• Closes Task-staged 시나리오 배치 실행과 비교 요약 UI 구현 #194

Area

• Engine
• Domain
• Application
• Docs
• Build
• Analysis
• Chore

Architecture Check

• I kept the dependency direction application -> domain -> engine.
• I did not add Qt UI code to src/domain.
• I did not add domain or application dependencies to src/engine.
• I used src/ as the include root.

Verification

• cmake --preset windows-debug
• cmake --build --preset build-debug
• ctest --preset test-debug
• Not run (reason below)

git diff --check origin/main...HEAD passed. cmake --preset windows-debug-no-app was attempted, but local MSBuild/CMake configure fails before project generation because Windows SDK discovery cannot read C:\Users\silve\AppData\Local\Microsoft SDKs.

Risks / Follow-up

• Batch execution is currently in-process and UI-driven; larger scenario counts may need future queue/progress virtualization.
• Full Qt build and CTest should be run in an environment with working Windows SDK access.