[Application] Add door/exit blocking tool

[95x8x9]

Summary

• Add Scenario “Block door” tool (doorway/exit only) with schedule editor and delete action.
• Apply ConnectionBlockDraft during run (domain control system) and render blocked-connection overlay in the run viewport.

Related Issue

• Closes Task-Scenario door/exit connection blocking (ConnectionBlock) #158

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)

Risks / Follow-up

• Follow-up: 처음 타겟팅한 출구가 막힐 시 다른 출구를 찾아가지 않는 현상 발견. 추후 pr로 업데이트 예정