why

Standardizing the example snippets with .data wrapping

what changed

test plan

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Summary by cubic

Standardized all v4 examples to read and print from .data instead of the full response, ensuring consistent payload handling across Go, Python, and TypeScript. Addresses Linear STG-2796.

• Refactors
  • Go (packages/sdk-go/examples): use result.Data in prints/checks for act, observe, and aggregated outputs; adopt extractResult/observeResult/actResult names.
  • Python (packages/sdk-python/examples): use result.data for model_dump and validations; rename to extract_result/observe_result/act_result; update custom_llm, custom_logging, extract, model_gateway, observe.
  • TypeScript (packages/sdk-ts/examples): log result.data and validate on .data; rename to extractResult/observeResult/actResult; update act, observe, extract, modelGateway, customLlm, customLogging.