Allowing renaming a project and showing associated folder path in the project context menu + allowing to change it

提交前确认 · Pre-submission checklist

• 我已搜索过现有 issue，确认这不是重复提议 / I searched existing issues and confirmed this isn't a duplicate.
• 我已阅读 CONTRIBUTING.md / I've read CONTRIBUTING.md.

问题类别 · Category

UI / 界面体验 · UI / UX

涉及的 Agent 框架 · Agent framework

ZCode Agent（自研）

使用场景 · Use case

I renamed one of my project folders on disk (ReportingTotal → ReportingInfra,
following a git repo rename). In ZCode's project list there is no way to rename
a project or to re-point it to the new folder, so:

• the project entry kept pointing to the old path;
• opening it treated the folder as a new, empty project;
• all task history for that project disappeared from the UI, because tasks are
  indexed in tasks-index.sqlite by absolute workspace path (workspace_key /
  workspace_path, meta_json.workspacePath, task_group_view_node_orders.node_key).
  I had to close ZCode and hand-edit setting.json + the SQLite index to get my
  2 historical tasks back. That's risky surgery most users can't do.

建议方案 · Proposal

1. Project list: allow renaming a project (display name, independent of the
   on-disk folder name).
2. Show the associated folder path in the project context menu / details.
3. Allow changing the associated folder ("re-point to a moved/renamed
   directory"), updating every internal reference atomically: recentProjects,
   lastWorkspaceSession, task index keyed by workspace path, task ordering.
4. When opening a project whose folder no longer exists, offer to locate the
   new path instead of silently starting a blank project at the old path
   (like IDEs do for moved projects).

预期价值 · Expected value

Folder/repo renames are routine maintenance. Today they silently orphan all
project task history, and recovery requires manual database editing with the
app closed. Native re-pointing removes perceived data loss (and support load);
a display-name rename decouples the UI label from the folder name.

你认为的优先级 · Your perceived priority

中 · Medium

你使用的 ZCode 版本 / 环境 · ZCode version / environment

3.6.5.4145 (Windows x64)

补充材料 · Additional context

Manual recovery performed (ZCode closed): setting.json (recentProjects,
lastWorkspaceSession) and tasks-index.sqlite (tasks.workspace_key/workspace_path,
meta_json.workspacePath, task_group_view_node_orders.node_key). Conversation
transcripts in ~/.zcode/cli are keyed by session id and were unaffected.

Start at the project list and project context menu, then inspect setting.json and tasks-index.sqlite, especially recentProjects, lastWorkspaceSession, workspace_key, workspace_path, meta_json.workspacePath, and task_group_view_node_orders.node_key. Define the affected references and the missing-folder flow before changing them. Done means a project can be renamed or re-pointed while its task history and ordering remain available, and a missing folder offers relocation instead of opening a blank project.