diff --git a/docs/development/current/main/10-Now.md b/docs/development/current/main/10-Now.md
index bd3b5a6b..db9ef294 100644
--- a/docs/development/current/main/10-Now.md
+++ b/docs/development/current/main/10-Now.md
@@ -1,5 +1,15 @@
 # Self Current Task — Now (main)
 
+## 2025-12-18：Phase 119 完了 ✅
+
+**Phase 119: StepTree cond SSOT（AST handle）**
+- StepNode::If / StepNode::Loop に cond_ast (AstNodeHandle) を追加
+- SSOT: cond は AST 参照を保持、cond_sig は派生（署名/ログ/差分検知）
+- 不変条件: cond_ast は signature_basis_string() に混ぜない（決定性維持）
+- 実装: Box<ASTNode> clone（dev-only なので許容）
+- 回帰: Phase 103/104/118 維持確認
+- 入口: `docs/development/current/main/design/control-tree.md`
+
 ## 2025-12-18：Phase 118 完了 ✅
 
 **Phase 118: loop + if-only merge parity**