Set PROJECT_DIRECTORY inside the workflow's environment variables (install the workflow, select in from the workflow list, and press the [x] icon), and you're good to go.
Open Alfred and type pm to access the project manager and try typing a query. You can also configure a hotkey for it.
- none (default): open the project in VSCode
- alt: open the project in Finder
- cmd: open the project in iTerm
- ctrl: open the project's repo
You can change which applications are used to open the project inside the workflow.