[Requests and ideas] When reading an existing markdown file in the sidebar, clicking on internal l...

**Mood:** 😔
**Category:** Requests and ideas

When reading an existing markdown file in the sidebar, clicking on internal links (URL fragment) in a "table of contents" section of the markdown file doesn't work. For long documents, this can be very helpful in navigating to relevant sections to review as I chat with the agent.

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| Field | Value |
| --- | --- |
| App version | 1.0.0 |
| OS | macOS 26.4.1 |
| Theme | Selene Selenized |
| Path | /chat |
| Tenure | Week 2 |

Start by reproducing the issue in the GitHub Copilot app: open an existing markdown file from the sidebar and click a table-of-contents link with a URL fragment. Trace the markdown display and link navigation behavior; done means internal links move to the corresponding section in the document.

Do mô hình lập chỉ mục viết ra từ nội dung của issue.