v1.0.2: Final Text Polish and Release Metadata Cleanup

[DeepZone]

Motivation

• Finalize visible text and metadata for a stable v1.0.2 patch without adding features or schema changes.
• Ensure UI copy, maintainer mention, role display and public-facing release information are consistent across frontend, backend and docs.
• Keep API role values and backend logic unchanged while normalizing presentation in the UI.

Description

• Bumped visible/runtime versions to v1.0.2 across backend/pyproject.toml, backend/app/main.py, backend/app/api/routes_system.py, backend/app/core/system_status.py, frontend/package.json, frontend/package-lock.json, README badges and fallback UI strings in frontend/src/App.tsx.
• Updated frontend/src/App.tsx to correct the About maintainer line to "Built and maintained by Noisens." and added a formatRole helper to render roles title-cased (Admin/Operator/Viewer) while preserving lowercase API role values.
• Added a true top-level H1 to README.md (# BGP, RPKI and ROA Preflight Validation Tool) and updated the Current Release badge/section to v1.0.2 with stable wording.
• Prepended a v1.0.2 (2026-05-22) section to RELEASE_NOTES.md, updated ROADMAP.md Current Status to v1.0.2 stable, and adjusted the backend smoke test expectation in backend/tests/test_api_smoke.py to match the new version.

Testing

• Ran cd frontend && npm run build and the frontend built successfully (Vite production build completed).
• Ran cd backend && pytest -q; an initial test run exposed a version assertion mismatch, the corresponding test was updated and pytest was rerun resulting in all tests passing (102 passed).

---

Codex Task