Dry-run deployments with Vercel CLI

Short summary

Vercel CLI now supports dry-run deployments with `vercel deploy --dry`, previewing the framework preset and file manifest as JSON before creating an actual deployment. This enables agents to verify framework detection, identify missing files, flag oversized assets, and validate configuration without uploading code. Update to CLI v54.17.2 or later to access this feature.

• •vercel deploy --dry previews deployment without uploading code
• •Returns JSON manifest with framework, files, sizes for validation
• •Agents can automate pre-deployment checks without test deployments

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