agent core browser should use persistent context for built-in feature…

[stevegmf]

Description

AgentCoreBrowser has some issue to use browser extension due to Playwright non-persistent context is using. This blocks Strands agent customer using session replay feature.

When customers use Playwright to connect to AgentCore browser (for example, via connectOverCDP()), any code that creates a non-persistent browser context (e.g. browser.newContext()) will find that Chrome extensions do not run inside that context — even if the remote browser itself was launched with extensions enabled.

Customer experience:

• Browser extensions appear missing or inactive.
• Session recording functionality (e.g. DOM event capture) does not work.
• No explicit error message — behavior silently differs from the persistent profile.

When this occurs:

• Customer connects Playwright to an existing browser via CDP.
• Customer creates new contexts using browser.newContext() instead of reusing or launching a persistent profile.

Related Issues

Issue is found during test

Documentation PR

N/A

Type of Change

Bug fix

Testing

How have you tested the change? Verify that the changes do not break functionality or introduce warnings in consuming repositories: agents-docs, agents-tools, agents-cli

• [V] I ran hatch run prepare
• [V] Manual test custom browser

After the fix, session replay feature works.

Checklist

• [V] I have read the CONTRIBUTING document
• [V] I have added any necessary tests that prove my fix is effective or my feature works
• [V] I have updated the documentation accordingly
• [V] I have added an appropriate example to the documentation to outline the feature
• [V] My changes generate no new warnings
• [V] Any dependent changes have been merged and published

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