fix: update @pgpmjs/core export config for grantee_name rename and add default_privilege table

[pyramation]

fix: update export config for grantee_name rename and default_privilege

Summary

Upstream the changes from the @pgpmjs/core pnpm patch in constructive-db#542 into the source package. That PR renamed role_name → grantee_name on table_grant, view_grant, and policy tables in metaschema_public, added is_grant to table_grant/view_grant, and created a new default_privilege table.

Changes in export-meta.ts:

• policy config: role_name → grantee_name
• table_grant config: role_name → grantee_name, add is_grant: 'boolean'
• New default_privilege table config (schema_id, object_type, privilege, grantee_name, is_grant)
• Add queryAndParse call for default_privilege after table_grant

Changes in export-migrations.ts:

• Add 'default_privilege' to tableOrder after 'table_grant'

services_public.apis.role_name is intentionally unchanged (different semantic context — API owner role, not a privilege grantee).

Review & Testing Checklist for Human

⚠️ 3 items — this is a config-only change but cannot be tested without the companion DB schema changes.

• Verify field lists match the actual DB schema — The default_privilege fields (id, database_id, schema_id, object_type, privilege, grantee_name, is_grant) must exactly match the columns on metaschema_public.default_privilege as deployed by constructive-db#542. Same for table_grant (now has grantee_name + is_grant) and policy (now has grantee_name). Any mismatch will cause buildDynamicFields to silently drop columns.
• view_grant is still not in the export config — The companion PR added is_grant and renamed role_name → grantee_name on view_grant too, but view_grant was never in the export config to begin with. Confirm this is intentional (i.e., view grants are not exported via this path).
• Test end-to-end — After publishing, update constructive-db to use the new version, remove the patches/@pgpmjs__core@6.3.0.patch, and run the full CI suite to confirm the generate step still passes without the patch.

Notes

• Companion PR: constructive-db#542
• Once this is published, the pnpm patch in constructive-db can be removed
• Requested by @pyramation
• Link to Devin run: https://app.devin.ai/sessions/524a9467df8d4672b945db65f0081960

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