[Application] align v1.1 workspace UI design

[learncold]

Summary

• align the UI/design artifacts with the v1.1 workspace plan across project, authoring, run, and analysis flows
• add explicit domain-side authoring contracts for project persistence and scenario templates
• update the Qt shell so the placeholder app structure matches the documented information architecture while keeping only playback controls wired live

Related Issue

• Refs Task-실시간 실행 상태와 run/variation 진행 패널 구현 #80, Task-scenario/run/variation 프로젝트 저장 및 다시 열기 구현 #86, Task-시나리오 템플릿 기반 빠른 시작 workflow 구현 #100, Task-persisted ScenarioComparison 기반 비교 workflow 구현 #29, Task-persisted 결과 아티팩트 기반 운영 대안 후보 추천 구현 #84, Task-추천안을 ScenarioVariation으로 생성하고 근거 비교 지원 구현 #85

Area

• Application
• Domain
• Engine
• 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)

Risks / Follow-up

• ProjectRepository and ScenarioTemplateCatalog are contract-only additions; concrete implementations remain follow-up work.
• The application shell reflects the new IA, but persisted project/result flows and template actions are still placeholders.