refactor: archive 阶段改用 PromptBuilder 组装提示词

src/core/assembler.ts

@@ -190,8 +190,10 @@ export async function assembleArchivePrompt(
       hint: "请在 .rune/config.yaml 中配置 stages.archive",
     });
 
-  const parts: string[] = [];
-  parts.push(`# 归档阶段：${changeName}\n`);
+  const builder = new PromptBuilder();
+
+  builder.head(`# 归档阶段：${changeName}`);
+  builder.prompt(archive.prompt);
 
   const changeDir = getChangeDir(projectRoot, changeName);
   const taskPath = join(changeDir, "task.md");
@@ -201,15 +203,10 @@ export async function assembleArchivePrompt(
       const tasks = parseTasks(taskContent);
       const incompleteTasks = tasks.filter((t) => !t.checked);
       if (incompleteTasks.length > 0) {
-        parts.push("## ⚠️ 警告：存在未完成的任务\n");
-        parts.push("以下任务尚未完成：");
-        for (const t of incompleteTasks) {
-          parts.push(`- [ ] ${t.text}`);
-        }
-        parts.push("");
-        parts.push("询问用户是否确认在任务未全部完成的情况下归档。");
-        parts.push("如用户确认，则继续执行归档操作；否则中止并返回构建阶段。");
-        parts.push("");
+        const taskLines = incompleteTasks.map((t) => `- [ ] ${t.text}`).join("\n");
+        builder.warn(
+          `## ⚠️ 警告：存在未完成的任务\n\n以下任务尚未完成：\n${taskLines}\n\n询问用户是否确认在任务未全部完成的情况下归档。\n如用户确认，则继续执行归档操作；否则中止并返回构建阶段。`,
+        );
       }
     } catch (e) {
       const code = (e as NodeJS.ErrnoException)?.code;
@@ -219,6 +216,5 @@ export async function assembleArchivePrompt(
     }
   }
 
-  parts.push(archive.prompt);
-  return applyCommandPrefix(parts.join("\n"), config);
+  return applyCommandPrefix(builder.build(), config);
 }