- Item 10: Convert to ES modules with import/export, single module entry point
- Item 11: Replace inline styles with CSS classes (background overlay, card
animations, highlight effect, config modal form elements)
- Item 12: Move ConfigManager modal HTML from JS template literal to
<template> element in index.html
- Item 13: Replace deprecated url.parse() with new URL() in server.js
and update route handlers to use searchParams
- Item 14: Replace JSON.parse/stringify deep clone with structuredClone()
- Item 15: Remove dead JSON-fixing regex code from departures.js route
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>