feat: log tree from Module 2 (logTree / log_tree); SpellGrid CLIs print Log:

Engine events carry the nesting depth they were recorded at; the harness
prints the log as an indented tree. New tests test_02_log_tree_shows_nesting
and test_03_log_tree_death_phase; both SpellGrid CLIs print the tree of the
last command's Sequences under a Log: line.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

course/02-action-queue/tests/rust/test_02.rs

@@ -113,6 +113,29 @@ fn test_02_depth_first_nesting() {
     assert_eq!(g.health(g.hero(1)), 29);
 }
 
+#[test]
+fn test_02_log_tree_shows_nesting() {
+    let mut g = new_game(GameOpts::default());
+    let e = g.summon("Test Echo", 0);
+    let s = g.summon("Armorsmith", 0);
+    let r = g.summon("Test Reactor", 0);
+    let enemy = g.hero(1);
+    g.clear_log();
+
+    g.deal_damage(s, 1);
+
+    let expected = [
+        format!("Damaged{{target: {s}, amount: 1}}"),
+        format!("Triggered{{source: {e}, trigger: \"damaged\"}}"),
+        format!("  Damaged{{target: {enemy}, amount: 1}}"),
+        format!("  Triggered{{source: {r}, trigger: \"damaged\"}}"),
+        format!("    StatsChanged{{id: {r}, attack: 2, health: 5}}"),
+        format!("Triggered{{source: {s}, trigger: \"damaged\"}}"),
+        "  ArmorGained{player: 0, amount: 1}".to_string(),
+    ];
+    assert_eq!(g.log_tree(), expected.join("\n") + "\n");
+}
+
 #[test]
 fn test_02_empty_deck_draw_is_fatigue() {
     let mut g = new_game(GameOpts::default());

course/02-action-queue/tests/ts/test_02.test.ts

@@ -71,6 +71,29 @@ test("test_02_depth_first_nesting", () => {
   expect(g.health(g.hero(1))).toBe(29);
 });
 
+test("test_02_log_tree_shows_nesting", () => {
+  const g = newGame();
+  const e = g.summon("Test Echo", 0);
+  const s = g.summon("Armorsmith", 0);
+  const r = g.summon("Test Reactor", 0);
+  const enemy = g.hero(1);
+  g.clearLog();
+
+  g.dealDamage(s, 1);
+
+  expect(g.logTree()).toBe(
+    [
+      `Damaged{target: ${s}, amount: 1}`,
+      `Triggered{source: ${e}, trigger: "damaged"}`,
+      `  Damaged{target: ${enemy}, amount: 1}`,
+      `  Triggered{source: ${r}, trigger: "damaged"}`,
+      `    StatsChanged{id: ${r}, attack: 2, health: 5}`,
+      `Triggered{source: ${s}, trigger: "damaged"}`,
+      `  ArmorGained{player: 0, amount: 1}`,
+    ].join("\n") + "\n",
+  );
+});
+
 test("test_02_empty_deck_draw_is_fatigue", () => {
   const g = newGame();
   const a = g.summon("Acolyte of Pain", 0);