Wrap the first clear mention of each OTHER existing article in content's body
prose as an inline [[Exact_Stem|surface]]. Skips the infobox + every fenced
block, headings, the series banner, the categories: line, footnote definition
lines, and the ## References section. Idempotent: a stem already linked anywhere
in the body is not linked again, so a re-run adds nothing. Pure.
Wrap the first clear mention of each OTHER existing article in
content's body prose as an inline [[Exact_Stem|surface]]. Skips the infobox + every fenced block, headings, the series banner, thecategories:line, footnote definition lines, and the ## References section. Idempotent: a stem already linked anywhere in the body is not linked again, so a re-run adds nothing. Pure.