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/test/java/solutions/tretter/githugandroid/GitSandboxEngineTest.kt

@@ -2,6 +2,8 @@ package solutions.tretter.githugandroid
 
 import org.junit.Assert.assertEquals
 import org.junit.Assert.assertFalse
+import org.junit.Assert.assertNotNull
+import org.junit.Assert.assertNull
 import org.junit.Assert.assertTrue
 import org.junit.Assume.assumeTrue
 import org.junit.Test
@@ -451,6 +453,39 @@ class GitSandboxEngineTest {
         }
     }
 
+    @Test
+    fun nativeInteractiveRebaseRewordRequestsCommitMessageEditorAndContinues() {
+        val git = testGitBinary()
+        assumeTrue(git.exists() && git.canExecute())
+        val root = Files.createTempDirectory("githug-interactive-rebase-reword-editor").toFile()
+        try {
+            val runtime = GitRepositoryRuntime(root, git)
+            val level = renameCommitLevel()
+            val repo = runtime.prepareLevel(level)
+            val invocation = parseGitEditorInvocation("git rebase -i HEAD~2")
+                ?: error("Expected interactive rebase editor invocation")
+            val todo = runtime.gitEditorInitialContent(level, repo, invocation)
+            val rewordTodo = todo.replaceFirst(Regex("(?m)^pick "), "reword ")
+
+            val rebaseResult = runtime.executeGitEditorCommandWithResult(level, repo, invocation, rewordTodo)
+            val nextEditor = rebaseResult.nextEditor
+            assertNotNull(nextEditor)
+            val message = nextEditor!!.content.replaceFirst("First coommit", "First commit")
+            val completedResult = runtime.executeGitEditorCommandWithResult(
+                level = level,
+                currentRepo = rebaseResult.repo,
+                invocation = nextEditor.invocation,
+                message = message,
+            )
+
+            assertEquals(".git/COMMIT_EDITMSG", nextEditor.invocation.displayPath)
+            assertNull(completedResult.nextEditor)
+            assertTrue(level.validator(completedResult.repo, nextEditor.invocation.command))
+        } finally {
+            root.deleteRecursively()
+        }
+    }
+
     @Test
     fun nativeExecutableShortcutRunsScriptThroughShell() {
         val git = testGitBinary()