Add Codex Reconciled Token Usage script

[QingJunXue]

Summary

• publish Codex Reconciled Token Usage version 1.0.0 by QingJunXue
• combine MessagePort real-time accounting with startup rollout rebuilding and 60-second incremental reconciliation
• account for subagent usage and proxy request statuses without reading relay CSV or provider billing APIs
• use empty default prices, multiplier 1, and no built-in price source, model alias, or long-context threshold
• preserve request-level short/long context buckets
• migrate legacy local state once and avoid focus/visibility-triggered disk scans
• replace matching live/rollout records with richer proxy Usage instead of double counting

Requires the /token-usage/events bridge from: BigPizzaV3/CodexPlusPlus#1688

Verification

• node --check scripts/codex-reconciled-token-usage.js
• 9/9 Node tests passed
• index.json parses successfully
• script SHA-256 matches the market entry:

c5b6dedcfbc1212b45075e9bad899486cc84014aa94d12ea75ff0a03a3cddd43