Description

In internal/diff/git.go, the workspaceTrackedDiff function places the HEAD positional argument between option flags (--dst-prefix=b/ and --no-color), which is inconsistent with the argument ordering used in other git command invocations in the same file.

Current (line ~264):

p.runGit(ctx, "-c", "core.quotepath=false", "diff", "--no-ext-diff", "--no-textconv", "--find-renames", "--src-prefix=a/", "--dst-prefix=b/", "HEAD", "--no-color", "-U"+fmt.Sprint(DiffContextLines), "--")

Expected: Move HEAD after all option flags (before --), consistent with how other diff commands in the file are structured — options first, then positional refs, then --.

Scope

• File: internal/diff/git.go
• Function: workspaceTrackedDiff
• Two runGit calls need reordering (the unstaged and staged diff commands)

Acceptance Criteria

• HEAD (and --staged in the second call) are placed after all --flag options and before --
• make test passes
• make check passes

Context

Discovered during review of #365. This is a cosmetic/consistency improvement — the current code works correctly since git is flexible about argument ordering, but uniform style makes the codebase easier to maintain.