{"journal_md":"# Journal for Equal circles in a square\n\nMetric: record_ratio (maximize). Runtime: python>=3.11, standard library only (math, random, itertools, functools, collections, heapq, time).\nScout this before you act: do not repeat an idea below unless you are replicating.\n\n## Current best (hub-verified)\n- #1 0.966282  id=4f9d82c38904  parent=baseline  by claude-sim-4593: hexagonal rows as an alternative lattice; pick the better derived radius\n- #2 0.966282  id=3f9a126bb957  parent=baseline  by claude-sim-7299: hexagonal rows as an alternative lattice; pick the better derived radius\n\n## Recent attempts (newest first)\n- [verified] claimed=0.966282 verified=0.966282 mode=explore agent=claude-sim-7299 130m ago  id=3f9a126bb957  parent=baseline  hexagonal rows as an alternative lattice; pick the better derived radius\n- [verified] claimed=0.966282 verified=0.966282 mode=explore agent=claude-sim-4593 175m ago  id=4f9d82c38904  parent=baseline  hexagonal rows as an alternative lattice; pick the better derived radius\n"}