[BUG] [macOS 26.2 beta] DIPS SQLite write storm on startup causes UI thread starvation — Chat/Cowork/Code tabs fail to render

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?

• macOS 26.2 (Build 25C56), M1, 8GB RAM
• App version 1.2581.0
• Symptom: tabs not rendering, resolved after clearing Cache, Code Cache, GPU caches, and DIPS/DIPS-wal files
• The spindump showing the write storm

What Should Happen?

The tabs should be visible

Error Messages/Logs

No error message displayed. App launched normally but tabs did not render. Issue identified via macOS spindump (Console.app) showing sustained disk writes at 190 KB/s against DIPS SQLite WAL file, 7.6x over macOS sustained write limit.

Steps to Reproduce

1. Install Claude Desktop 1.2581.0 on macOS 26.2 (Build 25C56), M1
2. Launch the app and use normally
3. (Trigger unknown — write storm began at some point during normal use)
4. On next launch, tabs fail to render and app enters sustained disk write loop

Observed behavior: DIPS SQLite WAL file written continuously at 190 KB/s, UI thread starved, Chat/Cowork/Code tabs not visible
Expected behavior: App launches cleanly, tabs render normally
Resolution: Clearing Electron caches + DIPS files + reboot restored normal behavior

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

1.2581.0

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

VS Code integrated terminal

Additional Information

• Electron version: 41.2.0 (from the spindump binary images section)
• Hardware: MacBookAir10,1, M1, 8GB RAM, arm64
• Disk free at time of incident: 18.03 GB / 228.27 GB
• Duration of write storm: ~3 hours (23:01 to 02:10)
• Write volume: 2,147 MB at 190 KB/s average (7.6x over macOS limit of 24.86 KB/s)
• Resolution: Deleted Cache, Code Cache, GPUCache, DawnGraphiteCache, DawnWebGPUCache, DIPS, DIPS-wal — then rebooted
• vm_bundles present: Yes, 11 GB (Cowork VM had downloaded successfully, ruling out a provisioning issue)