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

Changed files:\napp/build.gradle.kts
app/src/main/java/com/kawomi/githugandroid/GameModels.kt
app/src/main/java/com/kawomi/githugandroid/GitRuntime.kt

app/src/main/java/com/kawomi/githugandroid/GameModels.kt

@@ -25,6 +25,7 @@ data class RepoState(
     val commits: List<CommitNode> = emptyList(),
     val headBranch: String = "master",
     val branches: Map<String, Int> = emptyMap(),
+    val currentDir: String = ".",
 )
 
 data class Level(
@@ -75,6 +76,7 @@ val RepoStateSaver = listSaver<RepoState, Any>(
             state.files.flatMap { listOf(it.name, it.content, it.staged.toString(), it.tracked.toString()) },
             state.commits.flatMap { listOf(it.id, it.message) },
             state.branches.flatMap { listOf(it.key, it.value.toString()) },
+            state.currentDir,
         )
     },
     restore = { saved ->
@@ -97,7 +99,8 @@ val RepoStateSaver = listSaver<RepoState, Any>(
             commits = commitParts.chunked(2).map {
                 CommitNode(it[0] as String, it[1] as String)
             },
-            branches = branchParts.chunked(2).associate { (it[0] as String) to (it[1] as String).toInt() }
+            branches = branchParts.chunked(2).associate { (it[0] as String) to (it[1] as String).toInt() },
+            currentDir = saved[5] as String,
         )
     }
 )
@@ -105,19 +108,17 @@ val RepoStateSaver = listSaver<RepoState, Any>(
 object GitSandboxEngine {
     fun commandReferenceLines(): List<String> = listOf(
         "Available sandbox commands:",
-        "  git init",
-        "  git status",
-        "  git add <file>",
-        "  git add .",
-        "  git commit -m \"message\"",
-        "  git commit -am \"message\"",
-        "  git log",
-        "  git branch <name>",
-        "  git checkout <name>",
+        "  git ",
         "  ls",
         "  touch <file>",
         "  help",
-        "  git help",
+        "  pwd ",
+        "  cat <file>",
+        "  touch <file>",
+        "  mkdir <directory>",
+        "  cd <directory>",
+        "  rm <file>",
+        "  echo <message>",
     )
 
     fun execute(repo: RepoState, command: String): Pair<RepoState, List<String>> {