Add server/logger.js - zero-dependency, level-based logger that outputs
JSON in production and human-readable format in development. Controlled
via LOG_LEVEL env var (debug/info/warn/error, default: info).
Replaces all 100 console.log/warn/error calls in 14 server files.
Fix stored XSS in tasks (titles/subtasks) and settings (member list)
by applying escHtml(). Harden trust proxy to loopback default, add
OAuth state parameter for Google Calendar CSRF protection, sanitize
CSV export against formula injection, invalidate sessions on user
deletion, restrict usernames to alphanumeric chars, and require admin
role for calendar sync triggers.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace all — with - in all source files (JS, CSS, HTML, JSON,
Markdown) for consistency and readability.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>