agent: Make read_file and edit_file tool call titles more specific (#37639)

For read_file and edit_file, show the worktree-relative path if there's
only one visible worktree, and the "full path" otherwise. Also restores
the display of line numbers for read_file calls.

Release Notes:

- N/A
5f01f6d75fCole Miller committed on 9/8/2025, 4:57:22 PM· committed by GitHubparenta66cd82
22 files changedLine totals unavailable