Extends ImportDialog to handle .sql dump files alongside CSV/JSON.
Adds _SqlImportWorker that splits SQL with sqlparse (semicolon fallback),
executes each statement via driver.execute_query(), and collects non-fatal
errors. UI shows a text preview of the dump, statement count, a
stop-on-error checkbox, and a final summary with any per-statement errors.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
nngoandClaude Sonnet 4.6