docs: propagate equation-label / SVG copy-paste fixes across stats/base/dists/*

[Planeshifter]

Description

Propagating fixes merged to develop between 2026-04-25 16:41 UTC-7 and 2026-04-26 05:57 UTC-7 to sibling packages.

docs: propagate kumaraswamy equation-label fix from 692d07b

Three packages carry the same class of copy-paste error fixed in 692d07b: the <equation> label= / data-equation= attributes and the corresponding SVG filenames do not match the containing package name. Each site is corrected to align with its sibling pages and the actual package path.

• stats/base/dists/chisquare/quantile: renames label and SVG from chisquared_quantile_function to chisquare_quantile_function (trailing d dropped to match package name and all sibling equations).
• stats/base/dists/chi/cdf: renames label and SVG from chi_chi_cdf to chi_cdf (doubled chi_ prefix collapsed).
• stats/base/dists/halfnormal/stdev: renames label from half_normal_stdev to halfnormal_stdev (underscore separator removed; no SVG on disk for this page).

Related Issues

None.

Questions

No.

Other

Validation:

• Pattern search ran across all 47 packages under stats/base/dists/*, comparing every eq:<x>_… label, data-equation="eq:<x>_…" attribute, equation_<x>_….svg reference, and on-disk docs/img/equation_<x>_….svg filename against the containing package directory name (with - ↔ _ ↔ `` collapsing for compound names like discrete-uniform, `negative-binomial`, `pareto-type1`, `truncated-normal`).
• Two independent reads confirmed the defect at each shipped target site; sibling pages within each affected package use the corrected naming consistently (chisquare/{mean,cdf,pdf,kurtosis,entropy}, chi/{pdf,mean,…}, halfnormal/{mean,mode,kurtosis,entropy,logpdf}).
• Style-consistency pass confirmed each patch matches the surrounding package's equation-block convention (no live <div> added or removed; SVG URL pinned-commit hash preserved as in 692d07b).

Deliberately excluded — flagged needs-human and dropped from this run:

• stats/base/dists/chi/quantile — the label chi_chi_quantile_function is similarly doubled, but the underlying formula Q(p; k) = 2·P^-1(p, k/2) is the chi-squared quantile, not the chi quantile. The whole equation block was copy-pasted from chisquare/quantile, not just the label. Renaming the label without correcting the math would mask the deeper bug.
• stats/base/dists/gamma/quantile — the comment-tag <equation … data-equation="eq:quantile_function"> carries an anomalous data-equation attribute (no sibling has data-equation on the comment-tag at all), inconsistent with the live <div data-equation="eq:gamma_quantile_function"> on the next line. Removing vs. renaming requires editorial judgment about stdlib's equation-block convention; not a direct analog of the source rename.

Checklist

• Read, understood, and followed the contributing guidelines.

AI Assistance

• Yes
• No

If you answered "yes" above, how did you use AI assistance?

• Code generation (e.g., when writing an implementation or fixing a bug)
• Test/benchmark generation
• Documentation (including examples)
• Research and understanding

Disclosure

This PR was generated by an automated fix-propagation routine running in Claude Code. The routine enumerated fix: / docs: commits merged to develop in the last 24 hours, derived a search signature from each, ran cross-package searches for sibling sites with the same defect, validated each candidate by re-reading the file in full, and shipped only sites where the defect was objectively present and the patch was a direct mechanical analog of the source fix. Sites requiring editorial judgment or fixes beyond the source pattern's scope were rejected and listed under "deliberately excluded" above.

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@stdlib-js/reviewers

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Generated by Claude Code

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
stats/base/dists/chi/cdf	$\color{red}277/279$ $\color{green}+99.28%$	$\color{red}23/24$ $\color{green}+95.83%$	$\color{green}4/4$ $\color{green}+100.00%$	$\color{red}277/279$ $\color{green}+99.28%$
stats/base/dists/chisquare/quantile	$\color{green}180/180$ $\color{green}+100.00%$	$\color{green}5/5$ $\color{green}+100.00%$	$\color{green}2/2$ $\color{green}+100.00%$	$\color{green}180/180$ $\color{green}+100.00%$
stats/base/dists/halfnormal/stdev	$\color{green}168/168$ $\color{green}+100.00%$	$\color{green}8/8$ $\color{green}+100.00%$	$\color{green}2/2$ $\color{green}+100.00%$	$\color{green}168/168$ $\color{green}+100.00%$

The above coverage report was generated for the changes in this PR.