docs(wiki): every fenced block runs or says what it is: foreign code (WAT, Rust, C, Julia, …) labelled with its language; sketches, open questions and not-yet examples fenced as text with a note; two broken fences fixed (ambiguity, broadcasting); 3km+10m == 3010 meters. wiki_blocks: 115 of 330 failing → 0 of 219
assert_is("15÷5",3);
x
PAIN assert_emit("‖-3‖+1", 4); assert_emit("-‖-3‖", -3);
√π²==3 OK