test(e2e): Expand tests for Tanstack React Start

[tmilewski]

Description

• Add E2E tests for organizations, error handling, and proxy functionality for
  @clerk/tanstack-react-start
• Add /me template route that exposes the full auth object via data-testid attributes for test assertions
• Add OrganizationSwitcher to the template index route
• Register withCustomRoles and withEmailCodesProxy app configs for TanStack Start

Checklist

• pnpm test runs as expected.
• pnpm build runs as expected.
• (If applicable) JSDoc comments have been added or updated for any package exports
• (If applicable) Documentation has been updated

Type of change

• 🐛 Bug fix
• 🌟 New feature
• 🔨 Breaking change
• 📖 Refactoring / dependency upgrade / documentation
• other: Test

Summary by CodeRabbit

• New Features
  • Added Organization Switcher component to the home page, allowing users to easily switch between their organizations.
  • Introduced a new /me page that displays comprehensive user and organization information, including user ID, session ID, organization ID, assigned role, and organization slug.

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Project	Deployment	Actions	Updated (UTC)
clerk-js-sandbox	Ready	Preview, Comment	Mar 13, 2026 5:13pm

[changeset-bot]

🦋 Changeset detected

Latest commit: 1c4af4e

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

This PR includes changesets to release 0 packages

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commit: 1c4af4e

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository YAML (base), Organization UI (inherited)

Review profile: ASSERTIVE

Plan: Pro

Run ID: 7fe1d7bc-8e58-4853-929f-103a89057635

📥 Commits

Reviewing files that changed from the base of the PR and between b764267 and 1c4af4e.

📒 Files selected for processing (8)

• .changeset/tame-snakes-move.md
• integration/presets/longRunningApps.ts
• integration/templates/tanstack-react-start/src/routes/index.tsx
• integration/templates/tanstack-react-start/src/routes/me.tsx
• integration/tests/tanstack-start/error-handling.test.ts
• integration/tests/tanstack-start/organizations.test.ts
• integration/tests/tanstack-start/proxy.test.ts
• package.json

---

📝 Walkthrough

Walkthrough

This pull request extends the TanStack React Start integration with organization support features and expanded test coverage. A new route at /me displays user and organization details via Clerk authentication. Two new long-running app configurations were added for testing with custom roles and email codes proxy environments. Integration tests were introduced to validate error handling, organization authentication with custom roles, and proxy behavior. The index route was updated to include an OrganizationSwitcher component. A changeset file was created, and the integration test script pattern was broadened to include all matching TanStack React Start variants.

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main purpose of the PR: expanding end-to-end tests for the TanStack React Start package by adding test coverage for organizations, error handling, and proxy functionality.

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📝 Coding Plan

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