niobe v0.10.0

Niobe 0.10.0

The Activity pane now tells you what each sub-agent is doing, not just that it exists.

• Its model is shown next to it, as the agent's own replies name it, so you can see which work went to a cheaper model and which to a stronger one.
• Its current step is on a line beneath it while it runs (Reading catalog/cache.py), and the first line of its answer once it finishes. A failed agent shows why it stopped.
• How large its context grew is shown when it finishes, as done 4100 ctx. This is the size of the agent's conversation as Claude Code counted it, not a bill: Claude Code reports cost per model, never per agent, so Niobe doesn't show a cost for any single agent.