[FEATURE] Add a keybinding (e.g. Ctrl+Shift+A) to append the current VSCode selection to the context, allowing multiple disjoint code fragments to be included simultaneously.

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

When using Claude Code in terminal with the VSCode integration, the current editor selection is
automatically picked up as context. However, only one selection can be held at a time — selecting a new
fragment replaces the previous one.

Proposed Solution

Request: Add a keybinding (e.g. Ctrl+Shift+A or similar) to append the current selection to the
existing context, so that multiple disjoint code fragments from different locations can be included
simultaneously without manually typing @file:line-range references.

Alternative Solutions

_No response_

Priority

Low - Nice to have

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_