Search public procurement notices

Cursor-paginated PLACSP notice search over the materialized legal-first projection. The query contract is closed-world and scalar: unknown names, arrays and lexical type mismatches return 400; validly typed values outside documented ranges return 422. Full-text query indexes notice object and buyer only; it never indexes supplier names. Full-text plus structured filters returns 422 until a compound offline projection exists. CPV accepts an indexed 2-8 digit prefix, may combine only with published_from/published_to, and returns 503 rather than falling back when its CPV-date projection or exact index is unavailable. supplier_cif is resolved by the generation-bound offline 0062 projection and matches either the notice's top-level corporate adjudicatario or any materialized corporate coadjudicator. It may combine with phase, buyer_nif, province and publication dates; open_only and every monetary filter require a future compound projection and return 422. Because one notice can have several adjudicators, a search summary may display a different admitted top-level supplier; tender detail retains the complete materialized result set. Natural-person supplier names and identifiers are withheld together. Budget, estimated value and award are separate source-reported fields and none proves paid or executed spend. open_only freezes one UTC date for SQL filtering, row is_open semantics and cursor binding.