claude@clouddev1
ae99276283
13 matrix cells for the `explain` prefix across all three wrapped commands — `explain show data` / `explain update` / `explain delete` — covering each typing position (after the prefix, the inner entry word, the table, the filter clause) plus the three complete forms. The cells confirm `explain` plugs into the inner query grammars cleanly: candidates, hints and column scoping match the standalone commands, and the complete forms parse as `Command::Explain`. Also adds a worker test pinning the display SQL's `<>` rendering of inequality (ADR-0028 §3). Matrix: 161 -> 174 cells. 1172 tests pass; clippy clean.