A closing ::: glued to a paragraph (no blank line before it) rode inside
the prose chunk and crossed to the translator as part of the text run;
when the model dropped it, validation passed and the splice lost the
fence — the rest of the page rendered inside the container (seen in the
Spanish translation). Container fence lines (::: openers and closers
alike) are now always their own prose-free chunk, never reaching the
translator. Affected pages re-chunk on next save and re-translate under
the new hashes, repairing themselves.