Threaded context passed through query execution.

A plain struct recording the execution state for a single query call chain: the active query, the query stack (for cycle detection), accumulated dependencies, created entities, and the minimum durability across transitive inputs.

This module is intentionally independent of Roux.Runtime — it is a data structure, not behavior. Cycle detection reads query_stack without any Runtime dependency.

Fields

• db — the database handle.
• active_query — the currently executing query, or nil if at top level.
• query_stack — stack of active queries from outermost to innermost. Used for cycle detection.
• recorded_deps — dependencies accumulated during the current query's execution, each once, the most recent first (the entry keeps them in the order they were first demanded). Flushed to the memo entry on completion.
• seen_deps — the dependencies in recorded_deps, as a map's keys: a query demanding the same thing again records nothing.
• created_entities — entities created during the current query's execution. Flushed to the memo entry on completion.
• min_durability — the minimum durability level seen across all inputs read transitively. Propagated to the memo entry for the durability optimization. Starts at :high (identity for min).
• code_version — the code version of the active query (Roux.Query), stored with its entry.
• blobs — the Roux.Blob digests the active query's value names (Roux.Runtime.hold/1).