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Raw upstream error messages returned to the client #304
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File: src/lib/server/trino/queries.ts:176
Trino error messages are stored verbatim in query.error and surfaced through buildSnapshot.error to the client. Trino errors may expose schema details, table names, or internal query plans. These should be classified (query error vs. infrastructure error) and sanitised before being surfaced to users.
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fix: classify Trino errors before returning them to the client (#304)
test: cover Trino error sanitisation in E2E (#304)
fix(trino): Report rejected credentials and failed submits (#304)