chore: Replace _impl function aliases with explicit wrappers in R/centrality.R

[Copilot]

Direct function aliases to _impl functions obscure the API surface and make function signatures less discoverable. This replaces four aliases with explicit wrapper functions that forward arguments individually.

Changes

• strength: Now explicitly wraps strength_impl with full signature (graph, vids, mode, loops, weights)
• diversity: Now explicitly wraps diversity_impl with full signature (graph, weights, vids)
• page_rank: Now explicitly wraps personalized_pagerank_impl with full signature (graph, algo, vids, directed, damping, personalized, weights, options)
• harmonic_centrality: Now explicitly wraps harmonic_centrality_cutoff_impl with full signature (graph, vids, mode, weights, normalized, cutoff)

Each wrapper forwards arguments using explicit arg = arg notation, consistent with existing deprecated wrapper patterns in the file (e.g., graph.strength, page.rank).

Example

Before:

strength <- strength_impl

After:

strength <- function(graph, vids = V(graph), mode = c("all", "out", "in", "total"), loops = TRUE, weights = NULL) {
  strength_impl(
    graph = graph,
    vids = vids,
    mode = mode,
    loops = loops,
    weights = weights
  )
}

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Replace _impl aliases in R/centrality.R</issue_title>
<issue_description>Goal
Review the code in R/centrality.R and replace all direct _impl function aliases with explicit wrapper functions.

Functions to update:

• strength <- strength_impl
• diversity <- diversity_impl
• page_rank <- personalized_pagerank_impl
• harmonic_centrality <- harmonic_centrality_cutoff_impl

Instructions

1. Review the code to understand the function signatures
2. Create explicit wrapper functions that forward to the _impl functions
3. Forward each argument individually and explicitly using arg = arg notation
4. Do not use ... unless the _impl function itself uses ...

Pattern
Replace direct aliasing like:

func_name <- func_name_impl

With an explicit wrapper:

func_name <- function(arg1, arg2, ...) {
  func_name_impl(
    arg1 = arg1,
    arg2 = arg2,
    ...
  )
}

File
R/centrality.R</issue_description>

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

• Fixes Replace _impl aliases in R/centrality.R #2335

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