Converts an ad_audit_report_*.md (from either audit script) into a
self-contained, styled HTML page: severity badges on findings, sorted
tables, responsive layout, light/dark theme via prefers-color-scheme.
No network access needed to view -- all CSS is inlined.
Read-only structural/health audit of Active Directory: OU tree, user
and computer account status/hygiene flags, and group breakdown. Two
equivalent implementations depending on available access -- raw LDAP
via ldap3, or Get-AD* cmdlets via RSAT on a domain-joined machine.