The DuckDB backend these recipes used to target has been removed from go-minitrace. All SQL now runs on the normalized SQLite engine.

• The recipes were ported to the normalized schema: see go-minitrace help query-recipes. Runnable copies also live in the repo queries/ tree and the embedded presets (go-minitrace query run --preset).
• For rewriting your own saved DuckDB SQL, see the migration table in go-minitrace help query-duckdb.

Session-level recipes that used ->> on the old sessions_base blob columns still work unmodified against the sessions_base compatibility view; recipes that used UNNEST must switch to the child tables (tool_calls, turns, annotations, ...).