[FEATURE] Allow selective removal of tool results from context window

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 working on large codebases, file reads (Read tool, PDF reads, long grep outputs) embed full file contents into the context and quickly
consume the context window — even on 1M token models. The content is only needed at the moment of the edit, not for the rest of the session.

Feature request: Add the ability to selectively remove specific tool result messages from the context window, similar to how some chat
interfaces allow deleting individual messages.

Proposed Solution

Options that would work:

• A /drop-reads command that removes all Read/tool result content but keeps the conversation messages
• A way to mark a tool result as "ephemeral" so it's not included in subsequent context
• Click-to-remove on individual tool results in the UI

Why it matters:

• A single PDF or large Java file read can cost 5,000–20,000 tokens
• These inflate the context permanently even though the content is no longer needed
• On a 1M context model, file reads alone can consume 60–70% of the window in a long session
• /compact summarizes everything indiscriminately — there's no surgical option

This would allow much longer productive sessions without hitting context limits.

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_