Use theme overrides when you want to change appearance without rewriting core behavior.

• branding
• footer and header changes
• marketing page copy
• layout-level visual tweaks

• mixing visual edits with security-sensitive core logic
• patching around installer or auth behavior in theme-level files

Base URL and canonical handling are more trustworthy now, so branding and SEO changes should be aligned with the real production URL instead of accidental request-host fallbacks.