lint: line-length - #938

Second line-length sweep slice for plans#50: pure rewrap (+64/-19), every touched line within 120/100. Clean from macos/agy and macos/claude (187/187, 89/89), full CI green incl. Tests (Windows). windows/codex's Windows-box 185/187 was rejected as the box baseline. Part of work#141 (the rule and its lint test land with the last slice).