chore: apply follow-up fixes for commits recently merged to develop

[Planeshifter]

Description

What is the purpose of this pull request?

Follow-up fixes for commits merged to develop between 2026-07-16T10:51:12-07:00 (1255cc0) and 2026-07-17T04:16:00-07:00 (b8618bf).

This pull request:

• stats/base/dists/anglit/mode
  • Fixes the stray main.js variable naming in lib/node_modules/@stdlib/stats/base/dists/anglit/mode/lib/index.js, introduced in 6b72eb2 as mode instead of main; renames to match the sibling anglit distribution packages (cdf, entropy) added in the same batch.
  • Fixes the micro sign (µ, U+00B5) left over from 6b72eb2 in stats/base/dists/anglit/mode's README.md, examples/index.js, and examples/c/example.c, swapping in the Greek small letter mu (μ, U+03BC) to match anglit/cdf, anglit/entropy, and the rest of the package.
• stats/incr/nanmhmean
  • Fixes [harmonic-mean][harmonic-mean] to [harmonic mean][harmonic-mean] on line 64 of lib/node_modules/@stdlib/stats/incr/nanmhmean/README.md, matching the display text used everywhere else in the file. Follow-up to ef3f635.
• ml/base/loss/float64/epsilon-insensitive-gradient
  • Fixes trailing whitespace introduced in d62914b — line 75 of the epsilon-insensitive-gradient README (- **p**: predicted value. ) had a stray trailing space.
• os/platform
  • Fixes the PLATFORM values list in lib/node_modules/@stdlib/os/platform/README.md, which the notes section added in 1255cc0 left incomplete — 'aix' and 'openbsd' are valid process.platform values (and already declared in the package's package.json os field) but were missing from the enumeration.
• _tools/lint/repl-txt
  • Restores the backticks dropped around options in the _tools/lint/repl-txt README when 425613d rewrote the results object; every other _tools README backtick-quotes options in these two sentences, so this was just a slip in that refactor.

Note: an earlier commit on this branch added loss-gradient hyperlinks to the ml/base/loss/float64/squared-epsilon-insensitive-gradient README; that change was reverted per review feedback, so the branch now leaves that README untouched relative to develop.

Related Issues

Does this pull request have any related issues?

No.

Questions

Any questions for reviewers of this pull request?

No.

Other

Any other information relevant to this pull request? This may include screenshots, references, and/or implementation notes.

Validation. All 36 commits merged to develop in the window were reviewed by two independent style-compliance passes (checked against docs/style-guides and established sibling reference packages) and two independent bug scans (mathematical correctness of the new anglit distribution functions, NaN-aware incremental accumulators, ML loss gradients, BLAS dspr/sspr wrappers and enum refactors, and the dynamic package resolution tooling). No runtime bugs were found in the window; every fix in this PR was independently re-verified against the diff before inclusion.

Deliberately excluded: subjective/judgment-call findings, and anything not fixable within the window's diff. Notably, blas/base/dsymv and blas/base/sspmv (both lib/*.js variants) throw TypeErrors with unsubstituted %s placeholders (missing format() wrapping) — a real defect, but pre-existing code outside this window's diff, so it is left for a separate PR.

Checklist

Please ensure the following tasks are completed before submitting this pull request.

• Read, understood, and followed the contributing guidelines.

AI Assistance

When authoring the changes proposed in this PR, did you use any kind of 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

If you answered "yes" to using AI assistance, please provide a short disclosure indicating how you used AI assistance. This helps reviewers determine how much scrutiny to apply when reviewing your contribution. Example disclosures: "This PR was written primarily by Claude Code." or "I consulted ChatGPT to understand the codebase, but the proposed changes were fully authored manually by myself.".

This PR was authored by Claude Code as part of an automated review of commits merged to develop in the last 24 hours: multiple independent AI review passes flagged candidate issues, each finding was re-verified against the diff before a fix was applied, and all fixes were applied and committed by Claude Code. A human maintainer will audit before promoting this draft.

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
ml/base/loss/float64/epsilon-insensitive-gradient	$\\color{green}201/201$ $\\color{green}+0.00\\%$	$\\color{green}14/14$ $\\color{green}+0.00\\%$	$\\color{green}2/2$ $\\color{green}+0.00\\%$	$\\color{green}201/201$ $\\color{green}+0.00\\%$
os/platform	$\\color{green}84/84$ $\\color{green}+0.00\\%$	$\\color{green}2/2$ $\\color{green}+0.00\\%$	$\\color{green}0/0$ $\\color{green}+0.00\\%$	$\\color{green}84/84$ $\\color{green}+0.00\\%$
stats/base/dists/anglit/mode	$\\color{green}175/175$ $\\color{green}+0.00\\%$	$\\color{green}9/9$ $\\color{green}+0.00\\%$	$\\color{green}2/2$ $\\color{green}+0.00\\%$	$\\color{green}175/175$ $\\color{green}+0.00\\%$
stats/incr/nanmhmean	$\\color{green}148/148$ $\\color{green}+0.00\\%$	$\\color{green}6/6$ $\\color{green}+0.00\\%$	$\\color{green}2/2$ $\\color{green}+0.00\\%$	$\\color{green}148/148$ $\\color{green}+0.00\\%$

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