A pasted link went in as raw URL text, wrapping across the composer and
staying inert. It now becomes the same `@url:` reference the "+ → Add URL"
dialog inserts — parsed in place, so a link mid-sentence keeps its position
and the punctuation that ended the sentence stays outside the chip. Typing
one and pressing space commits it the same way.
Both rich-editor surfaces get it: the composer and the message-edit box,
whose paste went through `execCommand` and could not produce a chip at all.
Brooklyn Nicholson
adfaa95e3b