[Docs] add pressure risk summary md file

[95x8x9]

Summary

• Add pressure risk summary md file
• 변경내역, 반영된 내용, 추후 반영되어야 하는 내용을 담고 있다.
• 구체적인 기준값을 담고 있다.

Related Issue

• None (docs/policy-only PR)

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)
• docs 변경이므로 테스트 진행하지 않음

Risks / Follow-up

• None