[Bugfix] DeepSeekV32/v4: respect string='true|false' attribute andunwrap arguments/input wrapper

[chaunceyjiang]

Co-Authored-By: QwertyJack

Purpose

respect string='true|false' attribute andunwrap arguments/input wrapper

Test Plan

Test Result

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Essential Elements of an Effective PR Description Checklist

• The purpose of the PR, such as "Fix some issue (link existing issues this PR will resolve)".
• The test plan, such as providing test command.
• The test results, such as pasting the results comparison before and after, or e2e results
• (Optional) The necessary documentation update, such as updating supported_models.md and examples for a new model.

[gemini-code-assist]

Code Review

This pull request enhances the DeepSeek tool parsers (V3.2 and V4) by implementing support for the string="true" attribute in tool call parameters, which ensures values are preserved as strings regardless of the schema. It also introduces a _repair_param_dict method to automatically unwrap tool arguments that models occasionally nest within arguments or input keys. Corresponding unit tests have been added for both streaming and non-streaming scenarios to verify these improvements. I have no feedback to provide as no review comments were submitted.

[claude]

Claude Code Review

This pull request is from a fork — automated review is disabled. A repository maintainer can comment @claude review to run a one-time review.