Function ToolActivityLine

src/cli/ui.tsx:741–752

* Live activity line shown while a tool runs. Replaces the old "spinner + raw tool name" * with a friendly verb, a category colour + icon, and the streamed target (path/query/ * command) — so "⚡ Running npm test" reads at a glance instead of "⠋ bash {"command…".

(props: { name: string; partialArgs: string; motion: boolean })

              }
              next.push({
                type: 'tool',
                name: event.data.name,
                result: event.data.result,
                isError: event.data.isError,
                id: nextId(),
              });
              return next;
            });
            break;
          }
          case 'tool_ui': {
            // If a diff event came in, store it for upcoming permission prompt
            if (event.data.type === 'diff') {
              pendingDiffRef.current = event.data;
            }