docs: publish global charts and refresh benchmark navigation

[tom-clickhouse]

Summary

• Publish the fail-closed global latency, freshness, cost, score, and cost-versus-runtime chart set.
• Refresh the repository, full-path, and quotes READMEs around accepted evidence and reproduction order.
• Document pairwise normalization, pricing/layout alternatives, and the distinction between executable pipelines and historical command notebooks.

Validation

• Global six-family manifest regression tests pass.
• All global wide charts are 5156×2900 and were visually inspected.
• All local README links resolve.
• Full-stack gate: 16 tests, 51 Python files, 128 JSON/JSONL files, 22,514 JSONL records, and 14 executable shell files validated.

Stack

PR 7 of 7. Depends on PR 6 and is based on codex/redshift-t2.