Unclear The finding shows the flag being threaded through but does not say what behavior actually changes based on its value.
What
The internal code that classifies incoming session messages (the same code that already tracks things like grouping IDs, Slack origin, and activity tracking) now also takes in a fromPlugin value. This means messages can be tagged with whether they originated from a plugin, a package that extends Claude Code with extra capabilities.
Why
Tagging messages by their plugin origin lets Claude Code tell plugin-generated content apart from other message sources, which is a building block for handling plugin messages correctly elsewhere in the pipeline.
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The finding shows the flag being threaded through but does not say what behavior actually changes based on its value.