What
When Claude Code reports internal telemetry about sync sessions (the background process that keeps track of git and file state), the data it sends now includes three new optional fields: servedLinked, firstUpload, and emptyUnreached. These join the existing endedEarlier and storageV5 fields already sent with this telemetry.
Why
This is internal diagnostic data used to understand how sync sessions behave; it does not change any user-facing behavior or require any action from users.
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The writer flagged doubt
The finding does not say what data these fields actually capture or how they are used.