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A proactivityLevel field now flows through session creation, agent launch, config parsing and telemetry, with no UI or semantics yet.
A new proactivityLevel field is now threaded through session/task creation, agent-launch options, config parsing, and telemetry, alongside permissionMode. This looks like plumbing for a configurable proactivity setting, though its UI and semantics aren't part of this change.
Names in the bundleproactivityLevel