Markdown in a post reads as what it means.

A kind 1 is specified as plain text — NIP-10 says markup SHOULD NOT be
used — but bridges and cross-posters emit it anyway, and of the three
things we could do with it we were doing the worst: the URL inside
![cover](…) rendered as a picture while the "![cover](" sat above it as
litter. That is a real post from a real account, not a hypothetical.

Images and links, and nothing else. ![alt](url) is a picture, [text](url)
is a link that reads as its text. Headings, bold and italics are
deliberately NOT honoured: # opens a hashtag and * turns up in ordinary
prose, so supporting those would mangle normal posts to tidy up the rare
bridged one.

One thing markdown gives us that guessing never could: ![…] is the author
stating outright that the URL is an image, so a picture on a CDN path
with no file extension now renders as a picture instead of a bare link.

The URL rendering is one function now rather than a branch inside the
splitter, since a markdown link and a bare link deserve the same answer
about what they point at.

tools/markdown-note-test.js covers both shapes the real post came in
(including the newline after the paren), the no-extension case, and — the
one that matters most — that brackets, parens, hashtags and stars in
ordinary prose are left exactly as written.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>
Claude-Session: https://claude.ai/code/session_019mrt228Upn9nNCwGixzSLx

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