Fix PM_compare to use explicit namespace prefixes for purrr/rlang/stringr functions

[Copilot]

PM_compare and its helper cli_df used functions from purrr, rlang, and stringr without explicit namespace prefixes, causing runtime errors when these packages weren't loaded.

Changes

• R/PM_compare.R: Added namespace prefixes to all external function calls

  • map, map_chr, list_rbind, pluck → purrr::
  • set_names → rlang::

• R/PMutilities.R: Fixed cli_df function (called by PM_compare)

  • map_vec → purrr::map_vec
  • str_split → stringr::str_split

• NAMESPACE + R/Pmetrics-package.R: Added missing imports

  • purrr::map_vec, purrr::imap, purrr::list_flatten
  • stringr::str_split

Example

Previously would fail without tidyverse loaded:

# Without tidyverse loaded
result <- PM_compare(run1, run2)
# Error: could not find function "map_vec"

Now works regardless of loaded packages:

result <- PM_compare(run1, run2)  # Works

Original prompt

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This section details on the original issue you should resolve

<issue_title>PM_compare uses functions that are not loaded</issue_title>
<issue_description>E.g. str_split and map_vec.

This causes an error in case tidyverse or purrr is not loaded.</issue_description>

<agent_instructions>Fix the functions so that the functions are correctly referenced and used.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes PM_compare uses functions that are not loaded #45

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