[FEATURE] Cmd/Ctrl+click on file paths should open in default external editor

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

In Claude Code Desktop, clicking a file path in the chat or diff viewer always opens the in-app file pane, and there's no modifier-key shortcut to bypass it. To open a referenced file in VS Code (or whatever editor the user has set as default in the right-click "Open in" menu), the only path today is right-click → Open in → VS Code, every single time. In a typical session Claude references files dozens of times, so the friction adds up fast.

This is also inconsistent with how every IDE terminal and most chat tools handle file:// links — Cmd-click (macOS) / Ctrl-click (Windows/Linux) is the universal "open in external editor" gesture, and users reflexively try it.

Proposed Solution

Make Cmd-click (macOS) / Ctrl-click (Windows/Linux) on a file path open the file in the user's default external editor — the same editor that's already wired up under right-click → Open in. Plain left-click keeps its current behaviour (in-app file pane), so nothing changes for users who like the default.

Ideally the file opens at the referenced line/range when one is present (e.g. src/auth/session.ts:42), matching how IDE terminal hyperlinks behave.

Alternative Solutions

_No response_

Priority

Critical - Blocking my work

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_