chore: update OpenAPI schema

[fishaudio-bot]

Auto-generated update from https://api.fish.audio/openapi.json

[coderabbitai]

📝 Walkthrough

Walkthrough

The OpenAPI schema for GET /wallet/{user_id}/package now documents an optional nullable subscription_currency response field with a default value of null.

Changes

Wallet package schema

Layer / File(s)	Summary
Add subscription currency field api-reference/openapi.json	The successful wallet package response includes an optional nullable string field, subscription_currency, defaulting to null.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related PRs

• fishaudio/docs#73: Both changes update nullability structures in OpenAPI response schemas.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title is concise and accurately describes the OpenAPI schema update in this pull request.

✨ 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 chore/update-openapi-schema

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