fix: reject zero screen dimensions in record schema

[DoView1]

Fixes #6

@algora-pbc /claim #6

Summary

• Reject zero clientWidth, clientHeight, innerWidth, and innerHeight values in the generator record schema.
• Keep valid zero offset values accepted, such as availLeft, pageXOffset, pageYOffset, and screenX.
• Add regression coverage for zero dimensions and zero offsets.

Testing

• npm exec --yes pnpm@10.33.4 -- vitest run test/generator-networks-creator/record-schema.test.ts
• npm exec --yes pnpm@10.33.4 -- vitest run test/generator-networks-creator/generator-networks-creator.test.ts
• npm exec --yes pnpm@10.33.4 -- lint
• npm exec --yes pnpm@10.33.4 -- vitest run

[barjin]

See #544 (comment). Closing.