feat(data): automate catalog freshness

[ericyangpan]

Summary

• move model ranking and reference pricing configuration into schema-backed manifests
• add reviewed automation for product versions, benchmarks, model source monitoring, and current-date data health
• remove the legacy changelog artifact and validation path
• document repository data boundaries and pin a secure @node-minify/core

Why

Frequently changing catalog facts need repeatable, reviewable synchronization without embedding domain data in TypeScript or allowing scheduled jobs to mutate unverifiable facts.

Impact

• scheduled workflows open reviewed pull requests instead of pushing directly to main
• benchmark imports require exact upstream result identifiers and labels
• model source monitoring records source digests only and never infers price or lifecycle changes
• official reference token prices remain with model manifests; the price-intelligence file keeps only the curated model selection

Validation

• npm run test:ci
• npm run type-check
• npm run test:validate
• npm run validate:i18n
• npm run format:check
• npm run biome:check
• npm run spell
• npm run data-health:check
• npm run fetch:product-versions:check
• npm run fetch:benchmarks:check
• npm run fetch:model-sources:check
• npm run security:audit
• npm run build:next

[github-actions]

Preview deployment

Status	URL
Ready	https://pr-172-aicodingstack.pr-preview.workers.dev

Commit: 407e04d
Updated: 2026-07-28T16:48:56.324Z

[github-actions]

Preview deployment cleaned up

The preview deployment for PR #172 has been removed.