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⚠️ This signature still points at local project files (templates/assets/...),
not publicly-hosted URLs. That's fine for previewing here, but recipients won't see these
images — anyone reading the email needs to load them over the internet. Before pasting this
into a real email client, upload the images you're using to a public host (your own site, a
CDN, etc.) and replace the local paths above with those hosted URLs.