Function lower_bound_pgq_graph_table 

pub fn lower_bound_pgq_graph_table(
    table: &BoundPgqGraphTable,
    parameters: &PgqLoweringParameters,
) -> Result<LogicalPlan, PgqLoweringError>

Lowers the qualified executable SQL/PGQ subset into HawDB’s shared graph logical operators.

Shapes without an equivalent shared operator fail here. Syntax nodes never enter the optimizer or executor, and this path never renders Cypher text.