VSCode Extension: Ctrl+Alt+K (Insert At-Mentioned) not working in v2.1.7

Description

The keyboard shortcuts Ctrl+Alt+K (Claude Code: Insert At-Mentioned) and Alt+K (Claude Code: Insert @-Mention Reference) do not work in VSCode Extension version 2.1.7.

Steps to Reproduce

1. Install Claude Code VSCode Extension v2.1.7
2. Open a code file in the editor
3. Open Claude Code chat panel
4. Press Ctrl+Alt+K or Alt+K
5. Nothing happens

Expected Behavior

The @-mention reference picker should appear.

Actual Behavior

No response to the keyboard shortcut. Command also does not work when executed from Command Palette.

Environment

• VSCode Extension version: 2.1.7
• OS: Windows (WSL2)

Workaround

Downgrading to version 2.1.5 resolves the issue.

Additional Notes

• No keybinding conflicts detected in Keyboard Shortcuts settings
• The keybinding is correctly registered with editorTextFocus condition
• Chat panel is open when attempting to use the shortcut