Last two centres (5x5)

Finish the last centres: 17 cases.
Source: SpeedCubeDB, https://speedcubedb.com/a/5x5/L2C, retrieved 2026-10-24: case names, groups, setups and images, and the top-voted algorithms per case with their votes. Every algorithm shown was checked by the logic engine; rejected ones are listed in docs/db-exclusions.md.