[Dev-AdeTutu]

Summary

This PR hardens the SDK's type-safety and package API boundaries across the repository:

• Makes the important strict TypeScript compiler checks explicit so type-safety regressions are caught consistently.
• Pins @stellar/stellar-sdk to 13.3.0 in both the development and peer dependency manifests, with the lockfile updated to match.
• Aligns the sorokit-core/shared package export with a generated curated public entrypoint instead of exposing the broad internal shared barrel. Internal shared utilities remain available to the implementation but are no longer part of the consumer-facing stability surface.
• Extends export validation to load the curated shared entrypoint and reject accidental leakage of internal cache/registry utilities.

Validation

• npm run typecheck
• npm run build
• npm run validate:exports
• Full Vitest run: 3,831 tests passed; one existing timing-sensitive retry assertion missed its threshold by 1 ms. The isolated retry test passes.

Closes #797
Closes #796
Closes #795
Closes #792

[drips-wave]

@Dev-AdeTutu Great news! 🎉 Based on an automated assessment of this PR, the linked Wave issue(s) no longer count against your application limits.

You can now already apply to more issues while waiting for a review of this PR. Keep up the great work! 🚀

Learn more about application limits