Desktop Code tab: after a project folder is moved/renamed, the sidebar keeps grouping old sessions under an environment that points at the old path; no way to re-point sessions

Environment

• Claude desktop 2.37337.1 (macOS 27.0.1, arm64), bundled Claude Code 2.1.295
• Sidebar grouped by project/environment

Steps to reproduce

1. Use the Code tab for a few weeks with ~40 sessions in folder A (~/Downloads/Grobit, not a git repo).
2. Move the folder to B (~/My Drive/Project/iOS/Nana) in Finder (outside the app). Folder A no longer exists.
3. Quit the app, update every session record's cwd / originCwd / gitAnchorsFolderRealpath in ~/Library/Application Support/Claude/claude-code-sessions/<org>/<user>/local_*.json from A to B, copy ~/.claude/projects/<A-key>/ to <B-key>/, relaunch.

Expected
All sessions appear under one environment for folder B, or the app offers a way to point an environment (and its sessions) at the moved folder.

Observed

• ccd_session_mgmt list_sessions / get_session report cwd = B for every session, so the main process has the new path.
• The sidebar still shows the 39 old sessions under an environment "Grobit" whose target is folder A. Restarting the app does not change this. New sessions started in B land under a second, separate environment "Nana", so the project is split in two.
• Environments live in ~/Library/Application Support/Claude/ccd-session-presets.json (presets[].target.cwd); the stale entry keeps path A. The per-session map persisted.ccd-started-environments was empty, so I could not tell from the data why the renderer still matched those sessions to the old environment.
• The app only notices the missing folder when a session is started ("{name} can't start: {path} no longer exists"). There is no "folder moved / locate folder" or "move sessions to environment" affordance.

Workaround that worked
Right-click the stale environment → Edit environment → change the folder to B and rename it, then delete the duplicate environment. I did not test deleting the stale environment first; the delete confirmation only says sessions started from it are kept.

Suggestions

1. When an environment's folder no longer exists, show that in the sidebar header and offer "Locate folder…".
2. Group sessions by their current cwd, or expose "Move to environment…" for selected sessions.
3. Document the supported way to move a project folder without losing sidebar grouping (which files to update, in what order).