Focus operator graph views

[msaad00]

Summary

• focus analyze graph surfaces on scoped, readable defaults instead of all-at-once layouts
• make legends data-driven, improve mesh/context/operator readability, and clean up graph chrome
• merge blast-radius enrichment into vulnerabilities and remove remediation fix duplication

Validation

• npm --prefix ui run test:run
• npm --prefix ui run build

Validated in the main workspace with installed UI dependencies. The clean worktree used for branch packaging does not have local node_modules.