Actually apply the pre-commit fixers to the codebase.

This can be redone manually with
`pre-commit run --all`

While the pre-commit hook could be merged to run locally,
it is much cleaner to align all the files to best-practice
syntax in a single commit. It is also required for server-side
validation.

.gitpod.yml

@@ -25,4 +25,4 @@ ports:
   - name: binary
     port: 2586
   - name: web
-    port: 3000
+    port: 3000