docs(sandbox-e2b): add README with usage and configuration reference

[nuthalapativarun]

PR Checklist

• Commit message follows guidelines (conventional commits: <type>(<scope>): <description>)

Bugs / Features

• Related issue(s) linked
• Tests for the changes have been added
• Docs have been added / updated
• Changesets have been added (pnpm changeset)

What is the current behavior?

@voltagent/sandbox-e2b has no README, so users have no documentation for wiring E2BSandbox into a VoltAgent Workspace.

What is the new behavior?

Adds a README covering installation, basic usage with Workspace, and the E2BSandboxOptions configuration reference.

Notes for reviewers

Mirrors the style/structure of the recently added @voltagent/server-core README (#1331).

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Summary by cubic

Add a README for @voltagent/sandbox-e2b with install steps, Workspace usage, and a full E2BSandboxOptions reference. Includes a patch changeset.

^{Written for commit a0047ff. Summary will update on new commits.}

Summary by CodeRabbit

• Documentation
  • Added comprehensive README documentation for the E2B sandbox provider, including installation instructions, TypeScript usage examples, and configuration options reference.

[changeset-bot]

🦋 Changeset detected

Latest commit: a0047ff

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@voltagent/sandbox-e2b	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 4cea6d46-9b29-4bb5-83f5-81e0fe603b7a

📥 Commits

Reviewing files that changed from the base of the PR and between 0c1a1a4 and a0047ff.

📒 Files selected for processing (2)

• .changeset/sandbox-e2b-readme.md
• packages/sandbox-e2b/README.md

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📝 Walkthrough

Walkthrough

Adds a new README.md for the packages/sandbox-e2b package documenting the @voltagent/sandbox-e2b package: description, installation, TypeScript usage example, E2BSandboxOptions reference table, getSandbox() accessor, resource links, and MIT license. A matching patch changeset entry is also added.

Changes

sandbox-e2b Documentation

Layer / File(s)	Summary
sandbox-e2b README and changeset packages/sandbox-e2b/README.md, .changeset/sandbox-e2b-readme.md	New README covers package description, installation, TypeScript usage snippet wiring E2BSandbox into an Agent/Workspace, full E2BSandboxOptions table, getSandbox() accessor, documentation links, and MIT license. Changeset records a patch bump for the documentation addition.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Poem

🐇 A README hops into the light,
With options and snippets just right.
The sandbox is clear,
No mystery here—
E2B documented bright! ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title 'docs(sandbox-e2b): add README with usage and configuration reference' directly and clearly summarizes the main change: adding comprehensive README documentation to the sandbox-e2b package.
Description check	✅ Passed	The description comprehensively covers all required template sections: checklist items are completed, current vs new behavior is clearly described, docs and changesets are confirmed, and helpful reviewer notes are provided.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[cubic-dev-ai]

No issues found across 2 files

_{Re-trigger cubic}