Obsidian vault for coordination and excalidraw saving.
Installation:
Clone the repo.
Install Obsidian
Open an Obsidian Vault at the location of the cloned repo.
[See this thread on the Obsidian forums about how to install and configure Obsidian Git.]
You will need to re-enable Excalibrain once after installation; it can't detect that Excalidraw is installed when they're installed simultaneously. Head to the Settings cog in the bottom-left and disable/re-enable Community Plugins as needed.
After updating an Excalidraw template, note, or other resource, use CTRL+P to find Git: Commit all Changes and Git: Push.
Further details about Authentication with Obsidian Git can be found here:
https://publish.obsidian.md/git-doc/Authentication
https://publish.obsidian.md/git-doc/Getting+Started#Start+with+existing+remote+repository