fix: parse backend sponsorship responses

[Utilitycoder]

Summary by CodeRabbit

• Bug Fixes

  • Improved wallet authentication and sponsorship request handling for successful backend responses wrapped in a status and data envelope.
  • Preserved compatibility with successful responses using the previous unwrapped format.
  • Improved reliability when using the browser’s native network request functionality.

• Chores

  • Updated the package version to 0.2.1 and documented the fixes in the changelog.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 2572b848-b25f-4ab4-9ffa-545e9a1b1d8f

📥 Commits

Reviewing files that changed from the base of the PR and between 9f52b26 and 1937742.

📒 Files selected for processing (4)

• CHANGELOG.md
• package.json
• src/stellar/sponsorship-client.test.ts
• src/stellar/sponsorship-client.ts

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📝 Walkthrough

Walkthrough

The client now unwraps successful { status, data } responses while supporting unwrapped payloads. The default fetcher calls globalThis.fetch. Tests cover both response formats, and package metadata records version 0.2.1.

Changes

Response compatibility

Layer / File(s)	Summary
Response normalization and fetch wiring src/stellar/sponsorship-client.ts	Successful responses use object-valued data when available. Other payloads remain unchanged. The default fetcher invokes globalThis.fetch.
Envelope coverage and release metadata src/stellar/sponsorship-client.test.ts, package.json, CHANGELOG.md	Tests cover enveloped authentication, build, and submit responses, plus unwrapped challenge responses. The package version and changelog now show 0.2.1.

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix

✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/sponsorship-response-envelope

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