- Imported and injected `zod/v4` under `zod` in runtime environments for custom commands, custom tools, extensions, and hooks.
- Added corresponding Type definitions to `CustomCommandAPI`, `CustomToolAPI`, `ExtensionAPI`, and `HookAPI` interfaces.
- Re-exported Zod and its alias from the main package entry point to expand the public API surface.
- Refactored the internal Typebox validation shim to support parsing via standard `.safeParse()` and `.toJSON()` methods.
- Advanced Typebox shim utility capabilities with support for dual-key record validation and enhanced schema structure handling.