Deep Dive into SwiftWork (Part 3): Tool Card — An Extensible Tool Visualization System

The previous two posts covered how events flow from the SDK to the UI. This post focuses on visualizing one specific type of event: tool calls. Tool invocations are the most frequent operations in an Agent application. A typical task might call tools twenty or thirty times—reading files, writing files, executing commands, searching code. If every tool call renders as the same gray block, it's hard for users to quickly tell "what command is Bash running" or "which file is Edit changing." SwiftWor