what changed

• bumps catalog zod version which bumps zod in the extension, ts sdk, cli, and eve integration

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Summary by cubic

Bumps zod to 4.6.6 across the monorepo via the pnpm catalog, upgrading the TS SDK, extension, CLI, integrations, and eve. This also makes the generated V4 protocol schema compatible with the new zod version.

• Unpins zod in the CLI and middleware packages in favor of the catalog: reference.
• Adjusts protocol schema generation so metadata ids are no longer extracted into $defs; the standalone default extract schema now uses a fresh registry.
• Regenerated stagehand.v4.json emits two union types as type arrays instead of anyOf blocks.
• Updates the scoped release test to expect the middleware package in the release scope.