feat(99-02): create dad-jokes.md

- Create test-output directory
- Add 5 classic dad jokes with setup and punchline format
- Test file for parallel execution validation

test-output/dad-jokes.md

@@ -0,0 +1,38 @@
+# Dad Jokes
+
+A collection of classic dad jokes.
+
+---
+
+## Joke 1
+**Setup:** Why don't scientists trust atoms?
+
+**Punchline:** Because they make up everything!
+
+---
+
+## Joke 2
+**Setup:** I'm reading a book about anti-gravity.
+
+**Punchline:** It's impossible to put down!
+
+---
+
+## Joke 3
+**Setup:** Why did the scarecrow win an award?
+
+**Punchline:** Because he was outstanding in his field!
+
+---
+
+## Joke 4
+**Setup:** I used to hate facial hair.
+
+**Punchline:** But then it grew on me.
+
+---
+
+## Joke 5
+**Setup:** What do you call a fake noodle?
+
+**Punchline:** An impasta!