fix: widen seed/state types in random/base/randi

[Planeshifter]

Description

What is the purpose of this pull request?

This pull request:

• widens the seed and state types in random/base/randi to include the MINSTD variants.

The Options.name field already permits MINSTD generators:

name?: 'mt19937' | 'minstd' | 'minstd-shuffle';

and randi delegates seed/state to the selected underlying PRNG (getState() { return rand.state; }). When name is 'minstd'/'minstd-shuffle', .state returns an Int32Array (PRNGStateMINSTD), which the MT19937-only Uint32Array (PRNGStateMT19937) type rejected.

This widens all four members — the Options seed/state and the PRNG interface seed/state — to include the MINSTD variants, matching the sibling random/base/randu declaration (which already uses the union):

seed?: random.PRNGSeedMT19937 | random.PRNGSeedMINSTD;
state?: random.PRNGStateMT19937 | random.PRNGStateMINSTD;

The state widening is the load-bearing correctness fix; the seed union is included for consistency with randu, since PRNGSeedMINSTD and PRNGSeedMT19937 are structurally identical (number | ArrayLike<number>).

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.

Identified during a TypeScript-declaration audit of the @stdlib/random namespace and verified against lib/factory.js, lib/prngs.js, and the @stdlib/types/random seed/state definitions.

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

A TypeScript-declaration audit surfaced this issue using Claude Code; the finding was independently verified against the implementation and the base/randu reference, and reviewed by myself before submitting.

---

@stdlib-js/reviewers

[stdlib-bot]

Coverage Report

Package	Statements	Branches	Functions	Lines
random/base/randi	$\color{green}381/381$ $\color{green}+100.00\%$	$\color{green}34/34$ $\color{green}+100.00\%$	$\color{green}9/9$ $\color{green}+100.00\%$	$\color{green}381/381$ $\color{green}+100.00\%$

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