Greptile Summary

This PR adds a skipDisabledPlugins option to updateNpmInstalledPlugins and hardcodes it to true in the post-core-update plugin sync path, so plugins with enabled: false in config (or otherwise effectively disabled) are silently skipped instead of attempted and potentially failing. Install records and config entries for disabled plugins are left untouched.

Confidence Score: 5/5

PR is safe to merge — narrowly scoped change with full test coverage across all three install sources.

The change is small and well-contained: a single optional flag added to one function, called from one site with a hardcoded value. The underlying resolveEffectiveEnableState logic is pre-existing and well-tested. New tests cover all three source types (npm, ClawHub, marketplace) and verify that enabled-plugin failures remain fatal, preserving the fail-closed contract for non-disabled plugins.

No files require special attention.

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