[VSCode Extension] File:line references in chat panel are not clickable/navigable

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 Claude Code references file paths with line numbers in the VSCode
extension chat panel (e.g. orders.go:262 or src/app.ts:45-60), they
appear as styled/underlined text but clicking them does nothing.

I work across multiple projects simultaneously and Claude frequently
references specific files and line numbers during code analysis.
Currently I have to manually open each file using Cmd+P and navigate
to the line, which breaks my workflow every time Claude gives me a
code reference.

Proposed Solution

Clicking a file:line reference in the Claude Code VSCode chat panel
should open the file in the editor and scroll to the referenced line(s),
using VSCode's built-in vscode.workspace.openTextDocument +
vscode.window.showTextDocument APIs with the line range.

This already works in the VSCode Problems panel and terminal output —
the same behavior is expected in the Claude Code chat panel.

Alternative Solutions

Currently working around it by using Cmd+P to search for the file,
then Ctrl+G to jump to the line number manually. This is slow and
interrupts the flow of reading Claude's analysis.

Priority

Critical - Blocking my work

Feature Category

Other

Use Case Example

1. I ask Claude to analyze a Go file in my project
2. Claude responds: "The issue is in orders.go at line 262 where..."
3. I want to click that reference and land directly on line 262
4. Instead, nothing happens and I have to navigate manually

Additional Context

_No response_