Add setting to disable auto-attach of IDE selection context

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 text is selected in the editor, the Claude Code VS Code extension automatically attaches it as context (shown as "N lines selected" in the input box). There is no way to disable this by default — you have to click the eye-slash toggle every time.

In large codebases, I frequently have text selected from navigating/reading code, and it gets attached unintentionally, adding noise to prompts.

Proposed Solution

Add a VS Code extension setting like:

"claudeCode.autoAttachSelection": false

When false, editor selections are not auto-attached. Users can still manually attach selections via Ctrl+Esc or the attachment button.

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

Configuration and settings

Use Case Example

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Additional Context

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