[BUG] "Failed to load session" errors in Claude Code Mac Desktop

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Body:

Sessions from earlier in the week show up in the session picker UI but fail to load with a "Failed to load session" error.

Environment:

macOS (Darwin 25.2.0)
Claude Code (latest as of 2025-01-25)

What I found:

The session appears in the session list with its title and timestamp
The corresponding directory on disk (~/.claude/projects/.../) exists but contains only a subagents/ folder — no session transcript
sessions-index.json has an empty entries array despite multiple sessions existing
Multiple sessions from different days are affected

Expected behavior: Clicking a session in the list should load the conversation.
Actual behavior: "Failed to load session" error. The session data was never persisted to disk.

What Should Happen?

Expected behavior: Clicking a session in the list should load the conversation.
Actual behavior: "Failed to load session" error. The session data was never persisted to disk.

Error Messages/Logs

"Failed to load session" message with only option being "Back to landing page" button

Steps to Reproduce

Click on sessions from last Wednesday
See error messages

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude Code version 2.0.76

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_