Motivation

• Imported static URLs can sometimes be objects like { default: "..." } due to bundlers, so validation should be tolerant and normalize those to strings before type-checking.

Description

• Add a shared url Zod schema in lib/common/url.ts that preprocess-es values by unwrapping { default: ... } and then validates as z.string().
• Replace direct z.string() usages for URL-like props with the new url schema in lib/common/cadModel.ts, lib/components/cadmodel.ts, lib/common/layout.ts, lib/components/group.ts, and lib/platformConfig.ts, and update cadmodelProps to accept url.
• Regenerate the component types documentation so the new url schema is reflected in generated/COMPONENT_TYPES.md.

Testing

• Ran the generation scripts bun scripts/generate-component-types.ts, bun scripts/generate-manual-edits-docs.ts, bun scripts/generate-readme-docs.ts, and bun scripts/generate-props-overview.ts, and they completed successfully.
• Ran bunx tsc --noEmit to type-check the project and it succeeded.
• Ran bun run format to format files and it completed successfully.

Codex Task