[WIP] Regenerate javascript Azure Search SDK for API version 2026-04-01

[Copilot]

Thanks for asking me to work on this. I will get started on it and keep this PR's description up to date as I form a plan and make progress.

Generate Azure Search SDK — javascript — API 2026-04-01 (stable)

You are generating the javascript Azure Search SDK for API version 2026-04-01.

Spec

• API version : 2026-04-01

• Release type : stable

• Spec repo : Azure/azure-rest-api-specs

• Spec commit : 491ca87fe55d91c1ae8670b3ffd9465b6ed7639d

• Service path : specification/search/data-plane/Search

What you need to do

1. Regenerate the javascript SDK from the spec at commit 491ca87fe55d91c1ae8670b3ffd9465b6ed7639d.

2. Update the package, samples, tests, and changelog as required by the generated changes.

3. Validate the generated code builds and tests pass.

   • Follow Azure/azure-sdk-for-js conventions for @azure/search-documents; run rush build/rush test and include the summary in the PR.

4. Open a PR from a new branch sdk/2026-04-01-javascript targeting release/@azure/search-documents_13.1.0.

Repository & package

• Target repo : Azure/azure-sdk-for-js
• Package path : sdk/search/search-documents

Allowed paths

Modify files only under these paths:

• sdk/search/search-documents/**

Acceptance criteria

• Follow guidance established in the search SKILL.
• SDK regenerated from spec commit 491ca87fe55d91c1ae8670b3ffd9465b6ed7639d.
• Code builds and tests pass (include a build/test summary in the PR).
• Changes limited to the allowed paths.
• One PR opened targeting release/@azure/search-documents_13.1.0.
• PR title: [Search 2026-04-01] javascript SDK codegen.
• Tests written for new features, where applicable.
• CHANGELOG.md Updated with changes related to the PR and version. Adhere to the previous standards.

Do NOT do

• Do not modify files outside the allowed paths.
• Do not hand-edit generated code to mask spec issues — report blockers instead.
• Do not open more than one PR.
• Do not merge the PR yourself.

⚠️ Release Branch (TARGETED RELEASE)

This is a minor release targeting version 13.0.0. Do NOT base your work on main.

• Base tag : @azure/search-documents_13.0.0 (commit: b28bdd5afbc13bb396158eaa0aaad68827aa6fc3)
• Release branch : release/@azure/search-documents_13.1.0 ← ALREADY CREATED FOR YOU
• New version : 13.1.0

You MUST:

1. Create your working branch off the release branch release/@azure/search-documents_13.1.0, not off main.
2. Open your PR targeting the release branch release/@azure/search-documents_13.1.0, NOT main.
3. Update the package version to 13.1.0.
4. Add a CHANGELOG entry titled ## 13.1.0 (Unreleased).