feat(sync): migrate DigitalOcean model sync

[rekram1-node]

Summary

• migrate DigitalOcean from its standalone generator into the shared model sync runner
• fetch the complete paginated model catalog and join first-party static pricing, including long-context tiers
• preserve curated cache/reasoning/audio pricing and retain unmanaged or missing local models for lifecycle review
• use canonical base_model metadata for new resolvable models without overriding intrinsic fields such as open_weights, family, dates, or knowledge
• move existing DigitalOcean citations into preserved file headers and remove the old generator

Testing

• bun test packages/core/test/sync.test.ts (26 pass)
• bun validate
• git diff --check

A live bun digitalocean:sync --dry-run was not available locally because no DigitalOcean API token is configured. The workflow accepts either DIGITALOCEAN_API_TOKEN or DIGITALOCEAN_ACCESS_TOKEN.

Sources

• https://api.digitalocean.com/v2/gen-ai/models
• https://www.digitalocean.com/api/static-content/v1/products
• https://docs.digitalocean.com/products/gradient-ai-platform/details/models/