[Feature]: support for human collaboration where human can collaborate example like manus where people can collaborate by sharing private link 🔗 to enable col

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The issue body contains only the feature-request template and does not identify files, entry points, workflows, or acceptance criteria. First clarify how private-link sharing and human collaboration should work, including access and lifecycle requirements; implementation can be located after those details are defined. Done should be demonstrated by an agreed collaboration flow and tests covering its requirements.

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