CI builds aren't triggered when Claude makes commits to a PR

Sorry if this is just a "learn how to GitHub" question/issue, but I spent 20 minutes trying to figure it out and search hasn't gotten me anywhere because I'm asking about actions triggered by this action.

So when the Claude action successfully runs, creates a branch, and a PR template link and I initiate a PR, my expectation is that if I follow up with a comment on that PR (e.g. `@claude fix the tests`) that my other actions (e.g. CI build) would be run. But it's not.

I checked:
- Docs
- My usage (I have plenty left)
- Verified I don't have any sort of `github.actor` flag in my `ci.yml` file

The top of my CI workflow file looks like this:

```yaml
name: CI

on:
pull_request:
push:
schedule:
- cron: '0 14 * * *' # Runs at 14:00 UTC every day, which is 10:00 AM EDT

```