Two issues caught by code quality review on commit 2e60124:
1. C1 (critical): the <script> at line ~398 runs during HTML parsing,
BEFORE the modal markup at line ~627 has been parsed. getElementById
returned null, the `if (!modalEl) return;` guard silently exited the
IIFE, and the delegated click listener was never attached — so the
modal was completely dormant. Wrapped the IIFE body in a
DOMContentLoaded handler so the DOM is fully parsed before lookups.
2. I1 (a11y): added aria-labelledby on the modal root + a matching id on
the modal-title h5 so screen readers announce the title correctly
(Bootstrap 5 a11y convention).
No behavioural changes to the JS logic itself — only the wrapping and
two aria attributes on the markup.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>