Failed trino statement submit is not reported #429

When Trino rejects or cannot accept a statement submit (HTTP error, network failure, missing query ID), the editor never shows an error.

Cause

• runStatements (src/lib/server/trino/queries.ts, around line 294) logs a submit failure and breaks without storing a result for that statement.
• First statement: the tab's result list stays []. In query-runner.svelte.ts, updateProgress ignores empty lists, and allTerminal is false for [], so the client keeps polling.
• Later statement: every stored result is terminal, so the script looks finished.