scripts/usage_stats.py: standalone script (PEP 723, runs via uv run)
that parses all nginx access.log files, filters bots, maps Referer
headers to feature labels, and produces a 3-panel matplotlib figure:
daily logins + 7-day rolling mean, hour×weekday API heatmap, and
weekly feature usage stacked area. Output saved to
/var/bincio/stats/latest.png. Intended for a weekly cron job.
bincio/serve/routers/admin.py: GET /api/admin/stats serves the PNG
via the existing _require_admin() check — no new auth logic or nginx
changes needed.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Davide Scaini
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