Description

Output should optionally include a header row with column names from the query, improving usability when the output is piped to another sql-pipe invocation or saved as a named CSV.

Acceptance Criteria

• --header flag (or -H) prints column names as the first output row
• Header off by default (preserves current streaming behaviour)
• Header column names come from the SQLite column alias or original name
• When --header is set, the output is valid CSV that can be piped back into sql-pipe

Notes