Method delete

packages/server/src/services/project.service.ts:534–537

* 兼容旧的 DELETE 语义：改为归档项目，不再做硬删除。

(id: string)

    if (!project.archivedAt) {
      throw new ValidationError(`Project "${project.name}" is not archived`);
    }

    const wantsNewRepoPath = Boolean(input.repoPath?.trim());
    const currentPathIsValid = await isValidProjectDirectory(project.repoPath);
    const requiresRepoPath = Boolean(project.repoDeletedAt) || !currentPathIsValid;