docs: add Alice in Wonderland example storybook

Add comprehensive example demonstrating all major features of the
Storybook DSL through Lewis Carroll's Alice in Wonderland.

Contents:
- 12 characters (Alice, WhiteRabbit, CheshireCat, MadHatter, etc.)
- 7 relationships with named participant blocks
- 3 institutions (tea parties, royal court)
- 1 schedule (Mad Tea Party eternal rotation)
- 12 behavior trees using new syntax features
- 1 life arc (Alice's journey)

Demonstrates:
- Cross-file template resolution (schema/templates.sb)
- Template inheritance and includes
- Strict template validation
- Action parameters and repeater decorators
- Named participant relationship blocks
- Species-based character typing
- Rich prose blocks throughout

All content validates successfully.

.gitignore

@@ -1,2 +1,4 @@
 /target
 .envrc
+alice-in-wonderland.txt
+alice-in-wonderland.txt