71 lines
2.6 KiB
Markdown
71 lines
2.6 KiB
Markdown
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# Reasonix Worker A：Local Folder Tree Live 后端事件流
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Project root：`/mnt/Data1T/mnote`
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你不是唯一 worker。不要回滚、覆盖或清理他人的改动；只修改本任务 ownership 范围内的文件。不要提交 git。
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## 背景
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`design/01-tree-first-graph-kernel/process/1-8-mvp-post-process-execution-order-v1.md` 仍未整体完成，当前阻塞在 `3-3`：local_folder 默认路径的 Sidebar / FileTree 仍通过 `startLocalFolderSidebarWatch()` 轮询 `/api/tree/local-folder-watch` 后补拉 projection，没有进入统一 tree live consumer。
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新 checklist：`design/03-rust-web/process/3-18-local-folder-tree-live-consumer-convergence-checklist-v1.md`
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## Ownership
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允许修改：
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- `rust/crates/mnote-web/src/routes/local_folder_events.rs`
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- `rust/crates/mnote-web/src/routes/stream_support.rs`
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- `rust/crates/mnote-web/src/routes/mod.rs`
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- 同文件测试
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只读参考：
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- `rust/crates/mnote-web/src/local_folder_watcher_registry.rs`
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- `rust/crates/mnote-web/src/routes/local_folder_source.rs`
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- `rust/crates/mnote-web/src/routes/kernel.rs`
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禁止修改：
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- `rust/crates/mnote-web/src/ssr/pages/layout.rs`
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- `scripts/*.js`
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- 其他 design 文档
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## 目标
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1. 给 local_folder 提供 tree live 事件形状，至少支持 snapshot / resync。
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2. payload 中必须携带：
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- `kind: "snapshot"` 或 `kind: "resync"`
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- `stream: "workspace"`
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- `projection: "sidebar_tree"`
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- `sourceKind: "local_folder"`
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- `rootUri`
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- `workspaceId`
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- `revision`
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- `data.dataset.kernel_sidebar_projection`
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- `data.dataset.kernel_file_tree_projection`
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3. 复用 `LocalFolderWatcherRegistry`，不要新增第二套 watcher。
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4. 如果不能可靠生成细粒度 delta，本阶段允许 watcher change 后发 resync snapshot。
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5. 不把 local_folder 变化写回 Convex command log。
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## 建议实现
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- 可以扩展 `/api/local-folder/events`，让它在 query 中带 `treeLive=1` 或 `scope=tree` 时输出 `snapshot` / `resync` 事件；保留原有 `ready` / `change` 给 web_shell 编辑器外部变更使用。
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- snapshot 可复用 `load_local_folder_page_tree_snapshot(rootUri)` 和 `load_local_folder_file_tree_snapshot(rootUri)` 组装 dataset。
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- 事件 id 可继续使用 revision。
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## 验收命令
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```bash
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cargo test --manifest-path rust/Cargo.toml -p mnote-web local_folder_events -- --test-threads=1
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cargo test --manifest-path rust/Cargo.toml -p mnote-web stream_support -- --test-threads=1
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git diff --check
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```
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## 最终回复格式
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- 修改文件列表
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- 新增/变更的 API 行为
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- 运行过的命令和结果
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- 未完成项或风险
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