feat: impl

tests/fixtures/complex/dialogue/main.yarn

@@ -0,0 +1,24 @@
+title: ComplexNode1
+tags: test complex
+when: $has_sword
+---
+Character: This is a complex node with tags and conditions.
+<<once>>
+  This text only shows once.
+<<endonce>>
+===
+
+title: ComplexNode2
+---
+<<if $has_key>>
+Character: You have the key!
+<<else>>
+Character: You need a key to proceed.
+<<endif>>
+
+Here are your options:
+-> [Option 1] Go left
+  You went left.
+-> [Option 2] Go right
+  You went right.
+===

tests/fixtures/complex/dialogue/test.backup.yarn

@@ -0,0 +1,4 @@
+title: BackupNode
+---
+This file should be excluded.
+===