OpenCode nuked my storage (318 GB added)

[pythonlearner1025]

Description

I asked claude to investigate and here's the report:

Summary

Opencode's snapshot system has consumed 318GB of disk space by:

1. Tracking the entire home directory as a git worktree
2. Leaving orphaned temp pack files with no garbage collection

Storage Breakdown

Type	Size	Files	Description
Orphaned temp packs	284 GB	6	Failed/interrupted pack operations, never cleaned
Loose git objects	34 GB	590,600	Actual snapshot data
Total	318 GB	—	For a CLI tool with no storage settings

Orphaned Files

File	Size	Date
tmp_pack_qM0CSW	108 GB	Dec 31
tmp_pack_Latw37	61 GB	Dec 31
tmp_pack_Tt4SKV	54 GB	Dec 31
tmp_pack_nuK5V1	27 GB	Dec 31
tmp_pack_vSc9OC	25 GB	Jan 9
tmp_pack_hJO3AO	7.8 GB	Jan 1

$ git count-objects -vH
size-garbage: 283.84 GiB

Issues

- No cleanup mechanism — no git gc, no pruning, no temp file cleanup
- No storage limits — grows unbounded
- No user visibility — no warnings, no settings, no documentation
- Tracks entire home directory — not just project folders

Workaround

rm -rf ~/.local/share/opencode/snapshot/

Expected

- Track project directories only, not $HOME
- Clean up temp files on startup
- Run periodic garbage collection
- Implement storage limits
- Warn users or expose settings

### Plugins

_No response_

### OpenCode version

_No response_

### Steps to reproduce

_No response_

### Screenshot and/or share link

<img width="994" height="667" alt="Image" src="https://github.com/user-attachments/assets/fc9d49c5-75f0-46be-8712-2024ad614504" />

### Operating System

macOS 26.01

### Terminal

iTerm2