feat(#60): runEditTurn streams progress + accepts AbortSignal (INV-43/44/47)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

test/liveTurn.test.ts

@@ -1,5 +1,33 @@
-import { describe, it, expect } from "vitest";
-import { extractReplacement } from "../src/liveTurn";
+import { describe, it, expect, vi } from "vitest";
+import { extractReplacement, runEditTurn } from "../src/liveTurn";
+
+// A fake Agent that replays a scripted event list to subscribers, supports abort,
+// and resolves agent.run() with a completed (or aborted) result.
+function fakeSdk(events: any[], opts?: { abortAware?: boolean }) {
+  return {
+    Agent: class {
+      private listeners: ((e: any) => void)[] = [];
+      private aborted = false;
+      constructor(_cfg: unknown) {}
+      subscribe(fn: (e: any) => void) {
+        this.listeners.push(fn);
+        return () => {
+          this.listeners = this.listeners.filter((l) => l !== fn);
+        };
+      }
+      abort() {
+        this.aborted = true;
+      }
+      async run(_input: string) {
+        for (const e of events) for (const l of this.listeners) l(e);
+        if (opts?.abortAware && this.aborted) {
+          return { status: "aborted", outputText: "", runId: "r1", error: { message: "aborted" } };
+        }
+        return { status: "completed", outputText: "EDITED", runId: "r1" };
+      }
+    },
+  };
+}
 
 describe("extractReplacement", () => {
   it("returns plain text untouched", () => {
@@ -24,3 +52,31 @@ describe("extractReplacement", () => {
     expect(extractReplacement("```\nplain\n```", "plain old text")).toBe("plain");
   });
 });
+
+describe("runEditTurn progress + cancel", () => {
+  it("emits progress snapshots and returns the replacement unchanged (INV-44)", async () => {
+    vi.resetModules();
+    vi.doMock("@cline/sdk", () =>
+      fakeSdk([
+        { type: "assistant-text-delta", text: "ED", accumulatedText: "ED" },
+        { type: "usage-updated", usage: { inputTokens: 10, outputTokens: 5, cacheReadTokens: 0, cacheWriteTokens: 0 } },
+      ]),
+    );
+    const seen: string[] = [];
+    const turn = await runEditTurn("do it", "old", { onProgress: (s) => seen.push(s.phase) });
+    expect(turn.replacement).toBe("EDITED");
+    expect(seen).toContain("writing");
+    vi.doUnmock("@cline/sdk");
+    vi.resetModules();
+  });
+
+  it("a fired AbortSignal aborts the agent and the turn throws (INV-47)", async () => {
+    vi.resetModules();
+    vi.doMock("@cline/sdk", () => fakeSdk([], { abortAware: true }));
+    const ac = new AbortController();
+    ac.abort();
+    await expect(runEditTurn("do it", "old", { signal: ac.signal })).rejects.toThrow(/aborted/);
+    vi.doUnmock("@cline/sdk");
+    vi.resetModules();
+  });
+});