Relationship column lists are null for dotted/mixed-case schemas

[hsusul]

Bug

TABLE_RELATIONSHIPS_SQL / VIEWS_KEY_DEPENDENCIES_SQL filter some clauses with connamespace::regnamespace::text, while the outer table filter correctly uses nspname.

For schemas that need quoting, those differ:

nspname	::regnamespace::text
odd.schema	"odd.schema"
MySchema	"MySchema"

So IN ('odd.schema') matches nspname but misses regnamespace::text. The FK lateral still returns a row (aggregate), but with null columns / referenced_columns.

Impact

Typegen relationship inference (PostgresMetaRelationships) drops FK column info for projects that use dotted or mixed-case schema names.

Repro

create schema "odd.schema";
create table "odd.schema".parent (id int8 primary key);
create table "odd.schema".child (
  id int8 primary key,
  parent_id int8 references "odd.schema".parent (id)
);

Then relationships.list({ includedSchemas: ['odd.schema'] }) — relationship exists but columns / referenced_columns are null.

Expected

Filter by nspname (or oid via pg_namespace) consistently so column lists are populated.