Search stuck and never finishes

Describe the bug

I created a md to work around the issue, and it has the description

cat ~/.copilot/instructions/search-tool-workaround.instructions.md

Search / grep tool workaround

In this environment the built-in grep tool (and code-search tooling built on
it) can stall for minutes on the "Search" spinner, even though the underlying
ripgrep work completes in milliseconds. This is a tool-invocation-layer issue,
not a real search cost:

• Single-file ripgrep: ~2 ms
• Whole 70 GB / ~825k-file working tree: ~3.8 s

So the multi-minute "Search" hangs are NOT caused by ripgrep or repo size.

Guidance

• Prefer plain grep/rg and view/cat/sed via the bash tool for
  searching file contents and reading files. These return in milliseconds.
• Avoid the built-in grep tool here until the responsiveness bug is fixed.
• Always scope searches to a specific path/file when possible
  (e.g. grep -nE 'pattern' path/to/file).

Affected version

GitHub Copilot CLI 1.0.79

Steps to reproduce the behavior

everytime it needs to Search

Search "something" ....

which stuck forever

Expected behavior

No response

Additional context

No response

Bắt đầu bằng cách tái hiện tình trạng bị treo trong GitHub Copilot CLI 1.0.79 bằng công cụ Search/grep tích hợp, sau đó so sánh với các lệnh grep hoặc rg dựa trên bash được mô tả trong ~/.copilot/instructions/search-tool-workaround.instructions.md. Truy vết lớp gọi Search thay vì hiệu năng của ripgrep. Được xem là hoàn tất khi các lượt tìm kiếm hoàn thành thay vì tiếp tục nằm trên spinner của Search.