Rename to @pinax/api (v0.3.0)

[DenisCarriere]

Summary

• Rename package @pinax/token-api → @pinax/api
• Rename main class TokenAPI → PinaxAPI (kept TokenAPI/TokenClient as deprecated aliases for backward compat)
• Bump version to v0.3.0
• Env var TOKENAPI_KEY → PINAX_API_KEY in examples
• Update User-Agent header to @pinax/api
• Regenerated OpenAPI types from https://api.pinax.network/openapi
• Verified all 65 v1 routes from the OpenAPI spec are covered by the SDK (no missing routes)
• Updated README, examples, and doc comments to drop "Token API" branding

Breaking changes

• Package name change requires consumers to install @pinax/api
• Class rename: prefer PinaxAPI; TokenAPI still works but is deprecated
• Env var convention: examples now read PINAX_API_KEY (old name no longer referenced)

Test plan

• bun run typecheck passes
• bun test — 111/111 pass
• Diff of OpenAPI routes vs SDK GET() calls is empty
• Publish dry-run on npm before tagging release

🤖 Generated with Claude Code