[FEATURE] VS Code extension: chat panel cannot scroll back to the start of the current session

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Environment: Claude Code VS Code extension, v2.1.187

Problem: In the chat panel, scrolling up reaches a ceiling that is not the first message of the session. Earlier messages of the current session are not rendered and can't be reached by scrolling. The only workarounds are /export to a .md file or opening the on-disk transcript — neither is discoverable or user-friendly.

Expected: Be able to scroll (or lazily load) all the way back to the session's first message within the panel

Proposed Solution

Be able to scroll　all the way back to the session's first message within the panel

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

Interactive mode (TUI)

Use Case Example

_No response_

Additional Context

_No response_