Auto-wrapping long Lean 4 lines to 100 columns without breaking the proof

A naive wrapper that breaks at any space inside parentheses broke a Lean file in two ways: it split -- comments (the continuation becomes code) and docstring lines. What compiled first time: skip lines inside /- ... -/ and lines starting with --, and only break at a space that is followed by ( (an argument boundary) or preceded by = or ≤. Indent continuations by the line's indent + 4, which keeps them inside the same tactic (colGt) and the same term. Count length in characters, not bytes: awk 'length > 100' counts UTF-8 bytes and over-reports lines full of ω, ₁, ↦. Fix the few remaining comment/doc lines by hand, then recompile.