Fix Git editor reword workflow and UI coverage

- show Git editor file paths instead of the submitted git command
- surface follow-up commit message editors during interactive rebase reword
- add rename-commit UI tests for editor and amend-message solution paths
- add broader embedded level solution scenarios for alternate Git workflows

app/src/main/java/solutions/tretter/githugandroid/GitEditorCommands.kt

@@ -11,6 +11,7 @@ data class GitEditorInvocation(
     val command: String,
     val kind: GitEditorCommandKind,
     val title: String,
+    val displayPath: String,
     val initialContent: String = "",
 )
 
@@ -35,6 +36,7 @@ private fun parseGitCommitEditor(command: String, arguments: List<String>): GitE
         command = command,
         kind = GitEditorCommandKind.COMMIT_MESSAGE,
         title = "Edit Commit Message",
+        displayPath = ".git/COMMIT_EDITMSG",
     )
 }
 
@@ -48,6 +50,7 @@ private fun parseGitRebaseEditor(command: String, arguments: List<String>): GitE
         command = command,
         kind = GitEditorCommandKind.REBASE_TODO,
         title = "Edit Rebase Todo",
+        displayPath = ".git/rebase-merge/git-rebase-todo",
     )
 }
 
@@ -61,6 +64,7 @@ private fun parseGitTagEditor(command: String, arguments: List<String>): GitEdit
         command = command,
         kind = GitEditorCommandKind.TAG_MESSAGE,
         title = "Edit Tag Message",
+        displayPath = ".git/TAG_EDITMSG",
     )
 }