feat: phase 1 changes: add comments feat to unchanged lines in the pull request.

services/repository/files/diff_test.go

@@ -59,13 +59,16 @@ func TestGetDiffPreview(t *testing.T) {
 								Content:  "@@ -1,3 +1,4 @@",
 								Comments: nil,
 								SectionInfo: &gitdiff.DiffLineSectionInfo{
-									Path:          "README.md",
-									LastLeftIdx:   0,
-									LastRightIdx:  0,
-									LeftIdx:       1,
-									RightIdx:      1,
-									LeftHunkSize:  3,
-									RightHunkSize: 4,
+									Path:                "README.md",
+									LastLeftIdx:         0,
+									LastRightIdx:        0,
+									LeftIdx:             1,
+									RightIdx:            1,
+									LeftHunkSize:        3,
+									RightHunkSize:       4,
+									HasComments:         false,
+									LastRightCommentIdx: 0,
+									RightCommentIdx:     0,
 								},
 							},
 							{