feat(tui): add agent interaction workflows

tui/src/tool-renderers.ts

@@ -0,0 +1,65 @@
+import type { ToolProgressEvent } from "./protocol"
+
+export function mergeToolEvent(
+  previous: ToolProgressEvent | undefined,
+  next: ToolProgressEvent,
+): ToolProgressEvent {
+  if (!previous) return next
+  return {
+    ...previous,
+    ...next,
+    arguments: next.arguments ?? previous.arguments,
+    result: next.result ?? previous.result,
+    error: next.error ?? previous.error,
+  }
+}
+
+export function renderToolEvent(event: ToolProgressEvent): string {
+  const phase = event.phase || "start"
+  const marker = phase === "error" ? "×" : phase === "end" ? "✓" : "›"
+  const name = (event.name || "tool").trim()
+  const args = record(event.arguments)
+  const result = record(event.result)
+  const detail = phase === "error" ? compact(event.error) : toolDetail(name, args, result)
+  return `  ${marker} ${toolLabel(name)}${detail ? `  ${detail}` : ""}`
+}
+
+function toolLabel(name: string): string {
+  if (/^(?:exec|exec_command|shell|run_command)$/u.test(name)) return "Command"
+  if (/^(?:read_file|read)$/u.test(name)) return "Read"
+  if (/^(?:write_file|write)$/u.test(name)) return "Write"
+  if (/^(?:edit_file|apply_patch|edit)$/u.test(name)) return "Edit"
+  if (name === "web_search") return "Search web"
+  if (name === "web_fetch") return "Fetch"
+  return name
+}
+
+function toolDetail(
+  name: string,
+  args: Record<string, unknown>,
+  result: Record<string, unknown>,
+): string {
+  if (/^(?:exec|exec_command|shell|run_command)$/u.test(name)) {
+    return compact(args.command ?? args.cmd ?? result.output)
+  }
+  if (/^(?:read_file|write_file|edit_file|apply_patch|read|write|edit)$/u.test(name)) {
+    return compact(args.path ?? args.file_path ?? result.path)
+  }
+  if (name === "web_search") return compact(args.query ?? args.q)
+  if (name === "web_fetch") return compact(args.url)
+  if (/session/u.test(name)) return compact(args.session_key ?? args.chat_id ?? args.query)
+  if (Object.keys(args).length) return compact(args)
+  return Object.keys(result).length ? compact(result) : ""
+}
+
+function record(value: unknown): Record<string, unknown> {
+  return value && typeof value === "object" && !Array.isArray(value)
+    ? value as Record<string, unknown>
+    : {}
+}
+
+function compact(value: unknown): string {
+  if (value == null || value === "") return ""
+  const text = typeof value === "string" ? value : JSON.stringify(value)
+  return text.length > 88 ? `${text.slice(0, 85)}…` : text
+}