feat(minimax): Add speech-2.6 and support fetch voicers from API.

[leslie2046]

Related Issues or Context

• Add new speech models
  https://platform.minimaxi.com/docs/guides/speech-t2a-websocket
• Dynamic fetch voicers via API
  https://platform.minimaxi.com/docs/api-reference/voice-management-get

This PR contains Changes to Non-Plugin

• Documentation
• Other

This PR contains Changes to Non-LLM Models Plugin

• I have Run Comprehensive Tests Relevant to My Changes

This PR contains Changes to LLM Models Plugin

• My Changes Affect Message Flow Handling (System Messages and User→Assistant Turn-Taking)

• My Changes Affect Tool Interaction Flow (Multi-Round Usage and Output Handling, for both Agent App and Agent Node)

• My Changes Affect Multimodal Input Handling (Images, PDFs, Audio, Video, etc.)

• My Changes Affect Multimodal Output Generation (Images, Audio, Video, etc.)

• My Changes Affect Structured Output Format (JSON, XML, etc.)

• My Changes Affect Token Consumption Metrics

• My Changes Affect Other LLM Functionalities (Reasoning Process, Grounding, Prompt Caching, etc.)

• Other Changes (Add New Models, Fix Model Parameters etc.)

Version Control (Any Changes to the Plugin Will Require Bumping the Version)

• I have Bumped Up the Version in Manifest.yaml (Top-Level Version Field, Not in Meta Section)

Dify Plugin SDK Version

• I have Ensured dify_plugin>=0.3.0,<0.6.0 is in requirements.txt (SDK docs)

Environment Verification (If Any Code Changes)

Local Deployment Environment

• Dify Version is: , I have Tested My Changes on Local Deployment Dify with a Clean Environment That Matches the Production Configuration.

SaaS Environment

• I have Tested My Changes on cloud.dify.ai with a Clean Environment That Matches the Production Configuration

[gemini-code-assist]

Summary of Changes

Hello @leslie2046, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request significantly upgrades the Minimax Text-to-Speech (TTS) plugin by integrating the new speech-2.6 models and modernizing the voice management system. By transitioning from static YAML definitions to dynamic API calls for voice retrieval, the plugin now offers a more flexible and up-to-date selection of voices, enhancing the overall TTS capabilities.

Highlights

• New Speech Models Added: Introduced two new Minimax Text-to-Speech (TTS) models: speech-2.6-hd and speech-2.6-turbo, expanding the available speech synthesis options.
• Dynamic Voice Fetching: The system now dynamically retrieves available voices for TTS models directly from the Minimax API, replacing the previous static YAML configurations. This ensures that the plugin always has access to the latest voice options.
• Plugin Version Update: The Minimax plugin's version has been incremented from 0.0.9 to 0.0.10 in manifest.yaml.
• Dependency Update: The dify_plugin dependency in requirements.txt has been updated to ~=0.7.1.

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[gemini-code-assist]

Code Review

This pull request is a great improvement. It refactors the Minimax TTS model to dynamically fetch available voices from the API, which is much more maintainable than the previous hardcoded list. The addition of the new speech-2.6 models is also a welcome update. My review includes a few suggestions in tts.py to improve code clarity and robustness.

[gemini-code-assist]

The model and language parameters are no longer used within this function after refactoring to fetch voices from the API. If the method signature is defined by a base class and cannot be changed, it's good practice to explicitly mark them as unused to improve code clarity and signal your intent to future readers. You could add a comment or assign them to _ at the beginning of the function.