AUTH_RENAME, UNLINK, LINK, CREATE, TRUNCATE, COPYFILE, and READDIR events
are now broadcast to the GUI alongside open events. A purple operation badge
(e.g. "rename", "link") appears next to the path for any non-open operation
so the type is immediately visible in both compact and full event rows.

FolderOpenEvent gains an `operation` field (NSSecureCoding; defaults to
"open" when decoding events from an older service version).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>