Navigate to a staging URL and return factual Semantic JSON of all interactive/test-relevant elements with Playwright-native locators and live state. Use this before writing any Playwright test so selectors are real, not guessed.

Like extract_semantic_dom, but first performs a short DECLARED list of actions (fill/click/press/wait) in the main frame, then returns Semantic JSON of the RESULTING state. Use it for post-interaction UI a plain snapshot cannot see: success/error toasts, validation messages, opened dialogs. Derive action locators from a prior extract_semantic_dom call. The page must remain on allowlisted hosts after the actions, or nothing is extracted. Uniqueness reflects capture time — accumulating UI (chat threads, lists) can multiply matches later.

Diagnostic: navigate to a URL and return its frame tree (frame_path, url, name, same_origin, reachable). Useful for debugging cross-origin iframe boundaries before extraction.

Diagnostic: navigates with the configured QA_MCP_STORAGE_STATE session and reports whether the page bounced to a login-looking path (session likely expired). Use when extractions unexpectedly return login forms instead of the requested page.