feat: 将 task 从 plan 文档提升为独立 SDD 阶段

tests/cli/status.test.ts

@@ -134,15 +134,12 @@ describe("suggestNextStep", () => {
     expect(suggestNextStep(status)).toContain("rune archive test-change");
   });
 
-  it("规划完成但无 taskProgress 时建议 build", () => {
+  it("规划完成但无 taskProgress 时建议 task", () => {
     const status = makeStatus({
-      documents: [
-        { name: "design", completed: true, dependMet: true },
-        { name: "task", completed: true, dependMet: true },
-      ],
+      documents: [{ name: "design", completed: true, dependMet: true }],
       planCompleted: true,
       taskProgress: null,
     });
-    expect(suggestNextStep(status)).toContain("rune build test-change");
+    expect(suggestNextStep(status)).toContain("rune task test-change");
   });
 });