维护者确认 · PR #2651 fix(worktree): avoid redundant safe.directory writes

### 触发原因

**arch** — 核心路径改动 168 行 ≥ 150

改到 `packages/maker-core`，涉及 worktree 的 git safe.directory 管理逻辑。

### PR
https://github.com/makecindy/cindy/pull/2651

### 确认方式

- **通过**：直接在 PR 上 Approve
- **需要修改**：Request Changes，作者改完后重新 Approve 即放行

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关联 PR:#2651(作者 @tiammomo);本 issue 由 review-pr 流程自动创建,用于先讨论该 PR 涉及的技术架构调整,维护者确认后 PR 会恢复推进。

Start by reading PR #2651 and the worktree-related code under packages/maker-core. Review the safe.directory management changes and the architectural discussion there; done means the maintainer approves the PR and it can resume progressing.

Written by the indexing model from the issue text.