Turn handoffs can now carry a memory_context, including a laptop-specific tag

What

When work is handed off between sessions (for example between a laptop and another environment, a feature sometimes called "cowork"), the handoff can now carry extra memory information:

• Handoff payloads can include an optional memory_context field alongside the existing relay_marker field.
• If it's valid and not already used, it's attached to the handoff as a cowork_memory_context entry (with a version and content). If it's malformed or conflicts with something already present, it's logged and the handoff continues without it.
• When the memory context is built for a laptop session specifically, it's tagged with leg: "laptop".
• When you submit a bug report or feedback, the report's telemetry now includes a laptop_memory_rows_dropped count, tracking how many of these laptop-tagged memory context entries were stripped out of the transcript before the report was sent.

Why

This lets Claude Code carry richer memory context across a handoff between devices while keeping track of, and excluding, laptop-specific memory data from bug reports so it isn't sent along unnecessarily.