More polish, hide unfinished chapters/levels

levels/remotes/add

@@ -1,33 +0,0 @@
-title = Adding a remote
-cards = checkout
-
-[description]
-
-Let's work together with others! Your friend has their own repo at the URL `../friend` - you can add it using
-
-    git remote add [name] [URL]
-
-where `[name]` is an arbitrary, short name you pick for the remote.
-
-When you've done that, you can get all commits from that remote using
-
-    git pull friend
-
-There's a letter for you!
-
-[setup]
-
-git remote remove friend
-
-[setup friend]
-
-echo "I'm really committed to our friendship! <3" > love_letter
-git add .
-git commit -m "Write a letter"
-
-[win]
-
-# Add a remote that points to ../friend.
-git remote -v | grep '../friend'
-# Pull from the remote.
-git show HEAD:love_letter | grep committed

levels/remotes/fetch

@@ -1,5 +1,5 @@
 title = Fetching from remotes
-cards = checkout
+cards = checkout fetch commit-auto
 
 [description]
 

levels/remotes/pull-push

@@ -1,51 +0,0 @@
-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! :)

levels/remotes/rename-delete

@@ -1,23 +0,0 @@
-title = Deleting and renaming a remote
-cards = checkout
-
-[description]
-
-Here, you already have two remotes configured! You can list them using `git remote`.
-
-[setup]
-
-git remote rename friend frend
-
-[setup friend]
-
-[setup enemy]
-
-[win]
-
-# Rename the remote with the typo (using `git remote rename [old name] [new name]`)
-git remote | grep friend
-# The remote with the typo is gone.
-! grep 'frend' <(git remote)
-# Delete the remote you don't want to keep (using `git remote remove [remote]`)
-! grep 'enemy' <(git remote)

levels/remotes/sequence

@@ -1,3 +1,3 @@
-add
-rename-delete
+friend
+problems
 fetch