CSRF: upgrade session cookie sameSite from 'lax' to 'strict'.
Rate limiting: login endpoint now blocks an IP after 10 failed attempts
in a 15-minute window; resets on success. In-memory, no new dependency.
SESSION_SECRET: server exits at startup when NODE_ENV=production and
SESSION_SECRET is unset. docker-compose.yml updated to pass it via env;
.env.example added with generation instructions.
Security headers: add X-Content-Type-Options, X-Frame-Options, and
Referrer-Policy to all responses.
Sensitive data: routing_number and account_number are now omitted from
GET /api/account/:id responses for non-admin users.
Image size: logo upload capped at 512 KB in the account PUT handler.
Amount validation: checks (POST/PUT) and deposit items (POST/PUT) now
reject non-finite and non-positive amounts.
QBO import: uploaded file is rejected if its MIME type is not text or
a known CSV variant.
Font files were excluded by fonts/*.ttf and fonts/*.otf in .gitignore,
so GitHub Actions builds never had them and the container fell back to Courier.
Commit the TTF (more compatible with PDFKit than the PS-converted OTF).
steve