From the repo root:
make build-chromeThe built extension will be at dist/chrome/.
Navigate to chrome://extensions in your address bar.
Toggle Developer mode on — it's in the top-right corner of the Extensions page.
Click Load unpacked and select the dist/chrome/ directory from this repo.
The FindFirst icon will appear in your Chrome toolbar. If you don't see it, click the puzzle-piece icon and pin FindFirst.
Click the FindFirst icon and then Options (or navigate to the extension's options page) to set your FindFirst server URL and credentials.
Re-run make build-chrome, then click the Reload (↻) button on the FindFirst card at chrome://extensions. No need to re-add the extension.
On chrome://extensions, click Remove on the FindFirst card.