c7ecc64757
55 tests covering create table, drop column, drop relationship (endpoints + by-name), add relationship, rename/change column, and all app-lifecycle commands. The drop-column and relationship tests drove the §2.2 writes_table fix in the previous commit. Documents one UX wrinkle as a flagged finding: partial entry words (`qu`) classify as DefiniteErrorAt — same as unknown commands — because the walker only engages on a complete entry word. 859 baseline -> 989 passing; 1 ignored (pre-existing doc-test).