Reorder levels and chapters into a better sequence

levels/remotes/friend

@@ -0,0 +1,47 @@
+title = Friend
+cards = pull push commit-auto checkout
+
+[description]
+
+Your friend added another line to your essay! Get it, add a third one and send it to them!
+
+Take turns until you have five lines!
+
+[setup yours]
+
+echo "Line 1" > essay
+git add .
+git commit -m "One line"
+
+git push -u friend main
+
+[setup friend]
+
+git checkout main
+echo "Line 2, gnihihi" >> essay
+git commit -am "Another line"
+
+[actions friend]
+
+if test "$(git log --oneline | wc -l)" -eq 3; then
+    git reset --hard main # Necessary because the working directory isn't updated when we push to the friend.
+    echo "Line 4, blurbblubb" >> essay
+    git commit -am "Final line"
+    hint "Oh nice, I added a fourth line!"
+fi
+
+[win]
+
+# Got the second line from your friend
+git show HEAD:essay | grep gnihihi
+
+# Got the fourth line from your friend.
+git show HEAD:essay | grep blurbblubb
+
+[win friend]
+
+# The friend got a third line from you
+test "$(git show HEAD:essay | wc -l)" -ge 3
+
+# The friend got a fifth line from you
+test "$(git show HEAD:essay | wc -l)" -ge 5

levels/remotes/pull-push

@@ -0,0 +1,51 @@
+title = Helping each other
+cards = checkout commit-auto reset-hard pull push
+
+[description]
+
+The events and timelines you see are always only what your own time machine knows about!
+
+Of course, time agents don't have to work alone! Here, your sidekick has already prepared a merge for you! You can use the "pull" card to transfer it to your own time machine.
+
+Then, add another event on top (what does Sam have for dinner?), and `push` the result, to transfer it back to your sidekick!
+
+You can only ever manipulate things in your own time machine (the one on the bottom).
+
+[setup yours]
+
+echo "Just woke up. Is hungry." > sam
+git add .
+git commit -m "The beginning"
+
+git checkout -b pancakes
+echo "Had blueberry pancakes with maple syrup for breakfast." > sam
+git add .
+git commit -m "Pancakes!"
+
+git checkout -b muesli main
+echo "Had muesli with oats and strawberries for breakfast." > sam
+git add .
+git commit -m "Muesli!"
+
+git checkout main
+
+git push -u sidekick main pancakes muesli
+
+[setup sidekick]
+
+git checkout main
+git merge pancakes
+git merge muesli
+
+echo "Had pancakes with strawberries for breakfast." > sam
+git add .
+git commit -m "Let's make this breakfast compromise" --author="Sidekick <sidekick@example.com>"
+
+[win sidekick]
+
+# Below main's parent, there is a rhombus:
+git rev-parse main^^ && test "$(git rev-parse main^^1^)" = "$(git rev-parse main^^2^)"
+
+[congrats]
+
+In reality, in many cases, a lot of time agents work together to build a really good future together! :)