{# Default share image = the port's logo, so pasted links unfurl with the logo
instead of a bare URL. Child templates (e.g. blog posts) override og_image
with their own picture. Absolute https:// (matches canonical) so social
scrapers can fetch it regardless of proxy scheme headers. #}
{# Site icon = the port's own logo. Declared here so clients use the right
rendition; /favicon.ico and /apple-touch-icon.png are also routed (see
towboat/urls.py) for the clients that request them blindly. #}
