fix: jan should have a general assistant instruction

[louis-menlo]

Summary

This PR replaces Jan's hardcoded tool-use preferred assistant prompt with a general assistant instruction that works better across all model types and sizes.

Problem

The previous default assistant prompt was optimized specifically for tool usage, which caused issues:

• Overwhelmed smaller models with complex tool-specific instructions
• Created inconsistent behavior across different model capabilities
• Forced all models to use the same tool-focused approach

---

Important

Replaces Jan's tool-focused prompt with a general instruction to improve assistant performance across models.

• Behavior:
  • Replaces Jan's tool-focused prompt with a general assistant instruction in index.ts and useAssistant.ts.
  • New prompt emphasizes direct knowledge, conciseness, and tool use only when necessary.
• Tests:
  • Updates useAssistant.test.ts to reflect new prompt instructions.
  • Ensures assistant structure and behavior align with updated instructions.
• Misc:
  • Minor formatting changes in useAssistant.test.ts.

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[ellipsis-dev]

Important

Looks good to me! 👍

Reviewed everything up to 613c53c in 54 seconds. Click for details.

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1. extensions/assistant-extension/src/index.ts:77

• Draft comment:
  The default assistant instructions have been updated to a more general and user-friendly version. This improves compatibility across model types. Consider extracting this common text into a shared constant or configuration file if it is to be reused elsewhere to avoid duplication in the future.
• Reason this comment was not posted:
  Confidence changes required: 0% <= threshold 50% None

2. web-app/src/hooks/useAssistant.ts:23

• Draft comment:
  The assistant's instructions here are updated to the same general prompt, which is clear and concise. It might be beneficial to centralize these instructions to reduce duplication and ease future maintenance.
• Reason this comment was not posted:
  Confidence changes required: 0% <= threshold 50% None

Workflow ID: wflow_TNTJvFzo8ciqHuuW

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[ellipsis-dev]

Important

Looks good to me! 👍

Reviewed 02afdaf in 1 minute and 15 seconds. Click for details.

• Reviewed 205 lines of code in 1 files
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1. web-app/src/hooks/__tests__/useAssistant.test.ts:156

• Draft comment:
  The expected instructions string now reflects the new generic prompt ('Only use tools when they add real value to your response'). Ensure that the default assistant configuration is updated accordingly.
• Reason this comment was not posted:
  Comment did not seem useful. Confidence is useful = 0% <= threshold 50% This comment is purely informative and asks the PR author to ensure that the default assistant configuration is updated. It doesn't provide a specific code suggestion or ask for a specific test to be written. It violates the rule against asking the author to ensure something is updated.

2. web-app/src/hooks/__tests__/useAssistant.test.ts:22

• Draft comment:
  There are multiple whitespace and trailing comma changes which are non-functional. Ensure these formatting changes are intentional and consistent with the project’s style guidelines.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 50% None

Workflow ID: wflow_I4lmX4PzpfseUNXf

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[github-actions]

Barecheck - Code coverage report

Total: 36.95%

Your code coverage diff: -0.01% ▾

Uncovered files and lines

File	Lines
web-app/src/hooks/useAssistant.ts	33, 46, 50, 57