chore: update OpenAPI schema

[fishaudio-bot]

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

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Summary by CodeRabbit

• New Features

  • Agent sessions now use the agent’s configured speaking language when no language is specified.

• Breaking Changes

  • Removed the language_detection option from system-tool configuration settings.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: ea08db9c-c5d9-4219-83db-83b56669f90c

📥 Commits

Reviewing files that changed from the base of the PR and between 65d2037 and a23536a.

📒 Files selected for processing (1)

• api-reference/openapi.json

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📝 Walkthrough

Walkthrough

The OpenAPI specification now documents configured speaking language fallback for agent sessions. It also removes the language_detection option from system-tool configuration schemas.

Changes

Agent session language configuration

Layer / File(s)	Summary
OpenAPI contract update api-reference/openapi.json	The session creation description now uses the agent’s configured speaking language when language is omitted. The language_detection property is removed from the system-tool schemas.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• fishaudio/docs#120: Modifies the same OpenAPI session-language documentation and system-tools schemas.
• fishaudio/docs#121: Makes the same openapi.json updates for session language behavior and language_detection.

Suggested reviewers: him188, kilerd

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: updating the OpenAPI schema.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/update-openapi-schema

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