Auto-commit after successful build: update app gameplay/UI, improve build setup

Changed files:\napp/build.gradle.kts
app/src/main/java/solutions/tretter/githugandroid/GitHelpCommands.kt
app/src/main/java/solutions/tretter/githugandroid/GitHugApp.kt
app/src/main/java/solutions/tretter/githugandroid/GitRuntime.kt
app/src/main/java/solutions/tretter/githugandroid/ManPageDialog.kt
app/src/test/java/solutions/tretter/githugandroid/GitHelpCommandsTest.kt

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

@@ -61,6 +61,7 @@ fun GitHugApp() {
         var historyDraft by remember { mutableStateOf("") }
         var hasRestoredProgress by remember { mutableStateOf(false) }
         var editorState by remember { mutableStateOf<TextEditorState?>(null) }
+        var manPageState by remember { mutableStateOf<ManPageState?>(null) }
         val currentLevel = levels[currentLevelIndex]
 
         LaunchedEffect(persistedPaneLayout) {
@@ -168,6 +169,7 @@ fun GitHugApp() {
             historyIndex = -1
             historyDraft = ""
             editorState = null
+            manPageState = null
             applyRecommendedPaneWeights(persist = false)
         }
 
@@ -184,6 +186,7 @@ fun GitHugApp() {
             historyIndex = -1
             historyDraft = ""
             editorState = null
+            manPageState = null
             paneLayout = paneLayout.copy(
                 weights = paneLayout.weights + recommendedPaneWeights(
                     heights = recommendedPaneHeights(
@@ -323,6 +326,17 @@ fun GitHugApp() {
             applyRecommendedPaneWeights(persist = false)
         }
 
+        fun openManPage(invocation: GitHelpInvocation) {
+            val content = runtime.gitManPage(currentLevel, repo, invocation.topic)
+            output = buildList {
+                addAll(output)
+                add("$ ${invocation.command}")
+                add("Opened git help viewer for ${invocation.topic}")
+            }
+            manPageState = ManPageState(topic = invocation.topic, content = content)
+            applyRecommendedPaneWeights(persist = false)
+        }
+
         fun saveEditor() {
             val state = editorState ?: return
             val targetPath = state.saveAsPath.trim()
@@ -352,6 +366,12 @@ fun GitHugApp() {
                 return
             }
 
+            val helpInvocation = parseGitHelpInvocation(raw)
+            if (helpInvocation != null) {
+                openManPage(helpInvocation)
+                return
+            }
+
             val (newRepo, lines) = runtime.execute(currentLevel, repo, raw)
             applyCommandResult(raw, newRepo, lines, echoCommand = true)
         }
@@ -460,5 +480,12 @@ fun GitHugApp() {
                 onSave = { saveEditor() },
             )
         }
+
+        manPageState?.let { state ->
+            ManPageDialog(
+                state = state,
+                onClose = { manPageState = null },
+            )
+        }
     }
 }