[Application] persist pressure result artifacts

[SilverSupplier]

Summary

• Persists pressure result summaries in project workspace result artifacts.
• Persists pressure-specific risk snapshot details, including hotspots, exposed agents, and critical pressure events.
• Adds persistence and codec coverage for pressure round-trip behavior and numeric legacy agent IDs.

Related Issue

• Refs Task-Fire/Smoke 및 문 폐쇄 시뮬레이션 상호작용 v2 #218

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 (not rerun; existing configured build tree reused)
• cmake --build --preset build-debug
• ctest --preset test-debug
• cmake --build --preset build-no-app-debug
• ctest --preset test-no-app-debug
• Not run (reason below)

Risks / Follow-up

• This PR only covers pressure result persistence and codec compatibility; operational conflict persistence remains owned by PR [Domain] 운영 갈등 지표 및 결과 오버레이 구현 #267.
• This PR intentionally excludes hazard exposure UI/persistence work, which remains in PR [Application] show hazard exposure results #266.