Changelog/CLI

• Page through search results with --offset, and sort gravity list by stream order, creation or last update with --sort.
• Filter by creation date with --created-since.
• gravity edit asks for --expect-version or --force, so you don't overwrite a newer change.
• Purging a note queues its deletion from iCloud, and emptying the Trash takes 0.4 seconds instead of 6 on 5,000 notes.
• purge and trash empty show each note's first line.
• Gravity rejects notes over iCloud's 900,000-byte limit, and large notes no longer slow down search.
• Clearer errors for read-only, non-SQLite and empty database files. One damaged note no longer blocks an export.
• gravity sync status explains what to do about notes iCloud has quarantined.
• The agent guide covers paging, editing, deletion and sync status, and maps requests like "delete completely" to commands.