Implement Vercel Deployment Protection Rules for Preview Environment Access Control

[temma02]

Description

Implement Vercel deployment protection rules that restrict access to preview environments, ensuring that unreleased template previews are only accessible to authorized users.

Requirements and Context

• Security: Preview environments must be access-controlled
• Testing: Test protection rule enforcement
• Documentation: Document the preview access control

Suggested Execution

Branch: feat/issue-120-vercel-preview-protection-rules

Implement Changes

• Configure Vercel deployment protection for preview environments
• Restrict preview access to authorized users only
• Handle authorized access via protection bypass tokens
• Surface clear errors for unauthorized preview access

Test and Commit

• Test that unauthorized users cannot access previews
• Test authorized access via bypass tokens
• Document the preview access control

Example Commit Message

feat(vercel): implement deployment protection rules for preview access control

- Configure preview environment protection
- Restrict access to authorized users
- Handle authorized access via bypass tokens

Guidelines

• Deny preview access by default
• Use protection bypass tokens for authorized access
• Never expose unreleased previews publicly