fix(bootstrap): stream patchright install output in real-time

[ibtisam-12]

Instead of silently capturing subprocess output and discarding it, patchright install progress is now streamed line-by-line to logger.debug. This lets users see download progress (MB downloaded, percentage) when running with --log-level DEBUG.

CLI modes (--login, --status, --import-from-browser) additionally get live output via print() so the user is never left staring at a blank line.

The background task completion handler (_refresh_background_task_state) now logs the elapsed time, giving operators a clear signal that setup finished.

Fixes #533

[greptile-apps]

Greptile Summary

This PR makes Patchright browser setup output visible while installs are running. The main changes are:

• Streams Patchright subprocess output to debug logs.
• Prints install output in CLI setup modes.
• Logs elapsed time when background browser setup completes.
• Updates install helper tests for the new callback argument.
• Adds an optional VS Code task for launching opencode.

Confidence Score: 5/5

This looks safe to merge.

• No blocking issues found in the changed code.

Important Files Changed

Filename	Overview
linkedin_mcp_server/bootstrap.py	Streams Patchright install output, forwards CLI callbacks, and normalizes setup timestamps before elapsed-time logging.
tests/test_bootstrap.py	Updates install stubs to accept the new keyword callback argument.
.vscode/tasks.json	Adds an optional editor task for launching opencode.

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