Resolves dependabot PRs #30 and #31 which had merge conflicts after
the Flask-Limiter v4 and email-validator bumps landed. Flask-Login
0.6.3 adds Flask 3 / Werkzeug 3 compatibility.
Installs Flask-WTF and enables CSRFProtect globally. Adds csrf_token
hidden fields to all four POST forms (login, delete entry, add user,
delete user, and the public guestbook form). Exempts the API endpoint
which uses header-based key auth instead.
Convert UTC timestamps from SQLite to Mountain Time (America/Denver)
using a Jinja2 template filter backed by zoneinfo; add tzdata dependency
for IANA timezone data in the slim Docker image.
Replaces browser-cached Basic Auth credentials with proper server-side
session management. Logout now fully invalidates the session. Adds an
HTML login form at /admin/login, SECRET_KEY env var support, and updates
README with key generation instructions and role table.
Swap hand-rolled regex for the email-validator library which handles
RFC 5322 edge cases correctly. check_deliverability=False skips DNS
lookups (not viable on an intranet). Blank email still passes — only
a non-empty, malformed address triggers the error.
Add Flask-Limiter and cap POST submissions to 5 per minute per IP.
GET requests are not limited. Uses in-memory storage (appropriate
for single-instance kiosk deployment).
- Fixed port variable interpolation to use ${PORT:-8000} for a default value.
- Updated volume configuration to use a named volume (guestbook_data) mounted at /data.
- Improved YAML formatting for clarity.