The plugin event bus accepts subscriptions for core events like
issue.created but nothing emits them. This adds a bridge in
logActivity() so every domain action that's already logged also
fires a PluginEvent to subscribing plugins.
Uses a module-level setter (same pattern as publishLiveEvent)
to avoid threading the bus through all route handlers. Only
actions matching PLUGIN_EVENT_TYPES are forwarded.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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