When a user pins oh-my-opencode to a specific version (e.g., oh-my-opencode@3.4.0),
the auto-update checker now respects that choice and only shows a notification toast
instead of overwriting the pinned version with latest.
- Skip updatePinnedVersion() when pluginInfo.isPinned is true
- Show update-available toast only (notification, no modification)
- Added comprehensive tests for pinned/unpinned/autoUpdate scenarios
Fixes#1745
When bun install fails after updating the config pin, the config now shows the
new version but the actual package is the old one. Add revertPinnedVersion() to
roll back the config entry on install failure, keeping config and installed
version in sync.
Ref #1472
YeonGyu-Kim