Bug fix (about mcpPrompt) and add deepseek-reasoner

[bestsanmao]

#6078 not insert mcpSystemPrompt if no ENABLE_MCP
#6079 add deepseek-reasoner and change deepseek's summary model to deepseek-chat

Summary by CodeRabbit

• New Features

  • Added support for new DeepSeek AI models, including "deepseek-reasoner"
  • Enhanced model summarization capabilities
  • Improved system prompt and Model Control Protocol (MCP) handling

• Improvements

  • Refined configuration for model management
  • Updated logic for system prompt generation and model selection

[vercel]

@bestsanmao is attempting to deploy a commit to the NextChat Team on Vercel.

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[coderabbitai]

Walkthrough

This pull request introduces enhancements to the application's model configuration and chat store functionality. The changes involve adding a new DeepSeek summarization model constant, expanding the list of DeepSeek models, and updating the chat store's logic for handling summarization and Model Control Protocol (MCP) features. The modifications focus on improving model management and refining the system's ability to handle different model configurations.

Changes

File	Changes
app/constant.ts	- Added DEEPSEEK_SUMMARIZE_MODEL constant with value "deepseek-chat" - Updated deepseekModels array to include "deepseek-reasoner"
app/store/chat.ts	- Imported DEEPSEEK_SUMMARIZE_MODEL - Modified getSummarizeModel() to handle DeepSeek models - Updated getMessagesWithMemory() to check MCP status - Refined checkMcpJson() to verify MCP enablement

Possibly related PRs

• fix: missing mcp_config.json files required for building #6084: Modifications related to MCP (Multi-Channel Processing) configuration, which aligns with the MCP-related changes in this PR

Poem

🐰 A Rabbit's Ode to Model Expansion

DeepSeek models, oh so bright,
Reasoner, chat, a coding delight!
Constants dance, new paths unfurl,
MCP's logic begins to swirl
Summarization's rabbit trail 🌟

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 2f9cb5a and 2173c82.

📒 Files selected for processing (2)

• app/constant.ts (2 hunks)
• app/store/chat.ts (6 hunks)

🔇 Additional comments (6)

app/constant.ts (2)

396-396: LGTM: New summarization model constant.

The constant is properly defined and aligns with the existing model naming convention.

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565-565: LGTM: Added new DeepSeek model.

The "deepseek-reasoner" model has been correctly added to the deepseekModels array.

app/store/chat.ts (4)

23-23: LGTM: Added import for new constant.

The DEEPSEEK_SUMMARIZE_MODEL constant is properly imported.

---

147-150: LGTM: Added DeepSeek model support.

The DeepSeek model support is correctly implemented in the getSummarizeModel function, following the existing pattern for other providers.

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558-582: LGTM: Fixed MCP system prompt injection.

The code now properly checks if MCP is enabled before injecting the system prompt, fixing the issue mentioned in #6078. The implementation:

1. Checks MCP status before getting the system prompt
2. Sets empty string when MCP is disabled
3. Correctly handles system prompts based on conditions

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828-829: LGTM: Added MCP status check.

The code now checks if MCP is enabled before processing MCP JSON, preventing unnecessary processing when the feature is disabled.

✨ Finishing Touches

• 📝 Generate Docstrings (Beta)

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[Leizhenpeng]

fix #6090

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

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fix #6090