content-card used `overflow-scroll`, which renders scrollbar tracks even
when the content fits — visible as superfluous bars around the admin chart
cards. Switch to `overflow-auto` so scrollbars only appear when content
genuinely overflows (e.g. wide data tables still scroll).
Also add a gitignored ./tmp/ scratch directory (tracked via .gitkeep) and
document in AGENTS.md that temp files belong there.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The admin page was the only consumer of Chartist while the dashboard and
expense report already use Chart.js. Convert the admin "Growth in clients"
(bar) and "Changes by hour" (line) charts to Chart.js using the same
Alpine x-data/x-init canvas pattern as the dashboard, and drop the global
Chartist CSS/JS includes from the base page.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
