Tool Call Repair: Invalid input for tool "grep" - The tool call failed because the patterns are missing.

Summary

Seeing a few tool call fails with DeepSeek v4 Pro:

✻ Thought for 1 second
  The user wants the search to also find scheduling requests for people who are associated with a company (i.e., people who work at a company),
  not just direct company/people matches. So if I search for a company name, I should also find scheduling requests where that company's people
  are listed as participants.

  Let me look at the relationship between people and companies - there's probably a `people`.`current_company` field or a `relationships` table
  that links people to companies.

⠶ Let me check how people are associated with companies.

 SEARCH  ["undefined" in files]
 │ Invalid input for tool "grep". Please correct and retry:
 └   • pattern: Invalid input: expected string, received undefined

 SEARCH  ["undefined" in files]
 │ Invalid input for tool "grep". Please correct and retry:
 └   • pattern: Invalid input: expected string, received undefined

✻ Thought for 1 second
  The tool call failed because the patterns are missing. Let me check the schema and how people relate to companies.

Expected Behavior

Not to fail.

Actual Behavior

See above

Steps to reproduce the issue

Not sure.

Command Code Version

0.40.8

Operating System

macOS

Terminal/IDE

ghostty

Shell

zsh

Additional context

No response

ソースファイル、テスト、エントリーポイントは指定されていません。まず macOS 上でバージョン 0.40.8 を使って DeepSeek v4 Pro のトランスクリプトを再現し、次にパターンが未定義の場合の grep ツール呼び出し経路を追跡してください。エージェントが無効な grep 呼び出しを発行せず、パターンがない状態を失敗せずに処理できれば完了です。