fix(lambda-go): tidy error handling and typing in the Go Lambda SDK

[iliya-vidrush]

Small correctness and ergonomics fixes in the @remotion/lambda Go SDK, with no change to the wire format sent to the Lambda function.

Changes

• constructRenderInternals now returns the serialization error instead of calling log.Fatal, so importing the SDK can no longer kill the caller's process on a bad input.
• Invocation, marshalling and response-parsing errors are wrapped with %w and include the function name for context.
• The internal Crf, ColorSpace and GopSize fields are typed as pointers instead of interface{}, so an unset value serializes to null without relying on a typed zero value.
• Fixed the example program, which printed RenderId under the bucketName label, and removed a duplicate print.
• Removed a stray semicolon and added the missing trailing newline in version.go.

Testing

• go build ./..., go vet ./..., go test ./... and gofmt -l all pass in packages/lambda-go and packages/lambda-go-example.

[vercel]

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Project	Deployment	Actions	Updated (UTC)
bugs	Ready	Preview, Comment	Jul 10, 2026 11:30am
remotion	Ready	Preview, Comment	Jul 10, 2026 11:30am

[pullfrog]

✅ No new issues found.

Reviewed changes — cleaned up error handling and internal typing in the Go Lambda SDK without changing the serialized wire format.

• constructRenderInternals now returns serialization errors instead of calling log.Fatal.
• Invocation, marshalling, and response-parsing errors in invocations.go are wrapped with %w and annotated with the function name.
• Internal Crf, ColorSpace, and GopSize fields in renderInternalOptions are typed as pointers, so unset values serialize to null without relying on a typed zero value.
• Fixed the example program's bucket-name label and removed the duplicate RenderId print.
• Cleaned up the stray semicolon and missing newline in version.go.

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