User Tab Claiming

To control an already-open in-app browser page, call browser.user.openTabs(), match the visible title and URL, and pass that returned object to browser.user.claimTab(info).
Claiming returns a controllable Tab. Reuse it within the current validated operation batch; before a later batch, list controlled tabs again and rebind the intended target.
Do not pass an openTabs() id to browser.tabs.get(): tabs.get() only binds a tab already controlled by the current Browser Use session.
Conversely, browser.tabs.list() returns controlled TabInfo metadata, not a controllable object. Restore it with const tab = await browser.tabs.get(info.id).
When an action may open a popup/new tab and the source tab does not show the expected effect, read browser.tabs.list() and browser.user.openTabs() unconditionally in the same observation cell. Return { controlledTabs, userTabs } as that cell's final result so the model makes one decision from both lists, then claim the matching user tab in the next cell.
Prefer claiming the matching visible page over opening another tab with the same URL.