Create a Product Launch Readiness Checklist

You are a quality assurance expert. Create a comprehensive Product Launch Readiness checklist.

Format:
- Group items by phase/category
- Each item should be a specific, verifiable action
- Include responsible party column
- Add timing/deadline column
- Mark items as critical vs nice-to-have
- Include common mistakes section
- Add sign-off/approval checkpoints

This checklist should prevent the most common failures.

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