fix: update stride validation error messages

[Planeshifter]

Description

Follow-up fixes for commits merged to develop between 11fb87da (2026-05-07 13:37 -0500) and 5fd5c85c (2026-05-08 16:47 +0500). Two sibling-consistency fixes across recently-added blas/ext/base packages:

• blas/ext/base/slast-index-of-row — The error message in lib/slast_index_of_row.js and lib/slast_index_of_row.native.js (03cd59e4) lacks the lower bound specification that sindex-of-row and sibling packages include; updated both files and their JSDoc @throws tags to use the form 'invalid argument. Fifth argument must be greater than or equal to max(1,%d). Value: \%d`.'with both stride andLDA` parameters.

• blas/ext/base/glast-index-of-row — 7c02336d has incomplete stride validation messaging in lib/main.js: the runtime throw omits the required lower bound and the @throws tag lacks context. Aligned both the error format string and documentation with the sibling gindex-of-row implementation, which provides the full constraint max(1,N) for auditability.

Related Issues

No related issues.

Questions

No.

Other

Validation

What was checked:

• stdlib code-style compliance for the four new blas/ext/base packages (cwhere, dindex-of-column, slast-index-of-row, glast-index-of-row) and supporting commits, comparing each against established sibling packages.
• Bug scan over the diff (loop bounds, stride math, NaN/inf handling, N-API argument validation, row-major vs column-major branching, negative-stride paths, format-string arity, JSDoc/runtime contract agreement).

What was deliberately excluded:

• Anything requiring interpretation, judgement calls, or context outside the diff window to validate.
• The auto-generated REPL data dump (ddb2fb7e) and TypeScript declaration auto-updates (cecfaba8, 583a8336) — spot-checked only.
• Subjective preferences, "could be cleaner" suggestions, and nitpicks.

Note on revisions

An earlier revision of this PR also included a documentation-wording change to blas/ext/base/dindex-of-column ("stride of the" → "stride length for the"). That commit was dropped after maintainer review: the original phrasing already matched the majority sibling convention (dindex-of-row, sindex-of-row, gindex-of-row), so the change was unwarranted.

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 authored end-to-end by Claude Code as part of an automated 24-hour commit-review pass. Findings were produced by parallel reviewer agents, independently re-verified against sibling packages before any edit, and limited to high-signal sibling-consistency fixes. A maintainer should audit before promoting out of draft.

---

@stdlib-js/reviewers

---

Generated by Claude Code

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
blas/ext/base/glast-index-of-row	$\color{green}555/555$ $\color{green}+0.00%$	$\color{green}56/56$ $\color{green}+0.00%$	$\color{green}3/3$ $\color{green}+0.00%$	$\color{green}555/555$ $\color{green}+0.00%$
blas/ext/base/slast-index-of-row	$\color{green}575/575$ $\color{green}+0.00%$	$\color{green}50/50$ $\color{green}+0.00%$	$\color{green}4/4$ $\color{green}+0.00%$	$\color{green}575/575$ $\color{green}+0.00%$

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