feat(tui): add agent interaction workflows

tui/src/tool-renderers.test.ts

@@ -0,0 +1,22 @@
+import { describe, expect, test } from "bun:test"
+
+import { mergeToolEvent, renderToolEvent } from "./tool-renderers"
+
+describe("tool renderers", () => {
+  test("retains start arguments when an end frame only carries output", () => {
+    const event = mergeToolEvent(
+      { call_id: "exec-1", phase: "start", name: "exec", arguments: { cmd: "git status" } },
+      { call_id: "exec-1", phase: "end", name: "exec", result: { output: "clean" } },
+    )
+    expect(renderToolEvent(event)).toBe("  ✓ Command  git status")
+  })
+
+  test("uses stable task language for common file and web tools", () => {
+    expect(renderToolEvent({ phase: "end", name: "read_file", arguments: { path: "README.md" } }))
+      .toBe("  ✓ Read  README.md")
+    expect(renderToolEvent({ phase: "start", name: "web_search", arguments: { query: "nanobot" } }))
+      .toBe("  › Search web  nanobot")
+    expect(renderToolEvent({ phase: "error", name: "web_fetch", error: "timeout" }))
+      .toBe("  × Fetch  timeout")
+  })
+})