feat: End-to-End Anonymous Flow Testing

[iamanishsrivastava]

🚀 Feature Request

Test the full anonymous usage flow: create → limit reached → signup → data migration.

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🎯 Motivation

Ensure the system behaves correctly across edge cases, especially project limits and data handover.

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🧩 Solution or Approach

• Use Cypress or Playwright to simulate anonymous usage
• Assert data persists through signup

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✅ Acceptance Criteria

• Anonymous user can create up to 3 projects
• Prompt appears after 3rd project
• After signup, old projects show in new account

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📎 Additional Context

Should be updated regularly with schema/API changes.

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🔀 Related Branch

test/anon-flow-e2e