[jspijker]

Summary

Implements list_doc() as requested in #25. The function lists all references (ref) of meta documents in the meta table for a given type.

Changes

• R/list_doc.R — new exported list_doc(type, conn):
  • validates that type is a character string
  • queries with parameterized glue::glue_sql
  • uses namespace-prefixed pool::dbGetQuery
  • returns a character vector of ref, or NA when no documents of that type exist
• tests/testthat/test-list_doc.R — input validation + output tests (multiple refs for a type, single ref, and NA for a nonexistent type)
• man/list_doc.Rd, NAMESPACE — roxygen documentation/export
• NEWS.md — changelog entry

Closes #25

Note: R is not installed in this environment, so devtools::check()/tests were not executed here. The doc/NAMESPACE were updated by hand to match roxygen2 output.