Ambitious continuation of C7 Shannon fifth-power from current main. 367 is still the published fifth-power record. q3 finished the 8-coset leftover. Hamming-13 with ≤4 blockers is unfinished residue. Hunt a certified 368+ independent set of a new shape, or a proof that 367 is maximum. Work in compute/q4/. Orchestrate up to 5 workers.