Improve Runtime Intelligence README scanability

[hyeokjun32]

Summary:

• Reworked the Runtime Intelligence Risk Summary README section into reviewer-focused table rows.
• Added matching Korean-labeled links for key README internal document entry points.
• Added regression coverage for the scannable README structure and Korean companion links.

Tests:

• poetry run python3 -m pytest -q tests/test_runtime_intelligence_bundle_manifest.py -p no:cacheprovider
• poetry run inferedgelab portfolio-demo-check
• poetry run python3 -m pytest -q
• poetry run python3 -m pytest -q -p no:cacheprovider
• git diff --check