stagehand-python@4.3.0a0.dev1626: feat: expose browser-side function waits across Stagehand SDKs ( 3183)

Browserbase Stagehand releases published stagehand-python@4.3.0a0.dev1626: feat: expose browser-side function waits across Stagehand SDKs ( 3183). This automated release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: why Expose browser-side predicate waiting consistently across Stagehand SDKs, without transport polling. This is PR2 of 2, stacked directly on 3179 ( amel/wait-for-function-extension ). Polling, navigation recovery, and cleanup live in the parent; merge it first using the repository’s stacked-PR handoff rules. what changed Register page.wait for function and connect the extension controller/runtime to the internal implementation. Add TypeScript waitForFunction(expression, arg?, options?) , Python wait for function(expression, , arg, polling, timeout) , and Go WaitForFunction . As in Playwright, an expression that evaluates to a function is invoked on each poll and receives the optional JSON arg . Preserve JSON result keys through opaque wire metadata, with roundtrip coverage for own toString , constructor , and hasOwnProperty keys in nested payloads. No browser-handle API is introduced.…

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