Skill Sync v0.1.2

What's new

• Select all / none in the sync preview filter.
• Conflict decisions reflected in the summary - the plan summary now matches what you actually chose.
• Local vs cloud change tags - clearer which side changed.

Fixes

• Retry transient GitHub 5xx errors when fetching sync blobs.
• Parent-directory-not-exist error during apply.
• Split verbose sync UI into focused presentational components.