fix(go-sdk): patch date-time fields in nested schemas and allOf

[edg956]

Summary

• Bug fix: patchDateTimeToEpochMillis and patchBareObjects previously only walked one level of properties, missing fields inside allOf/anyOf/oneOf and nested inline objects. Fields like startDate/endDate were left as *time.Time in generated code, causing unmarshal failures with epoch-millis values from the API.
• Fix: extracted a walkSchema recursive visitor that traverses the full JSON tree; both patch functions now use it.
• Tests: added scripts/patch_swagger_test.go covering flat properties, nested inline objects, allOf, array items, and the non-bare-object guard.
• Docs: added a Development section to the README with code generation steps, test commands, and linting.

Test plan

• go test ./scripts/ -v — all 7 patch script tests pass
• go test ./pkg/ometa/ -v — unit tests pass
• Regenerate models.go against a real swagger spec and confirm no *time.Time fields remain

🤖 Generated with Claude Code

[github-actions]

Hi there 👋 Thanks for your contribution!

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[github-actions]

The Go checkstyle failed.

Please run make go_lint_fix in the root of your repository and commit the changes to this PR.

You can also run make go_lint to check for issues without auto-fixing.