v0.1.0

New features

• Add cub sync for transactional synchronization of external @file and @clean nodes, with filename/GNX selection and dry-run reporting.
• Synchronize @clean files using Leo's Mulder/Ream algorithm: an LCS-based propagation step reinserts sentinels around edits in the public file before reconstructing the outline.
• Add body editing and expanded outline-editing support to the TUI.

Improvements

• Match Leo persistence semantics by keeping reconstructed @file trees thin.
• Support @clean synchronization for plain-text and otherwise unknown file extensions.
• Remove legacy serialized _mod_time metadata during synchronization.
• Update installation documentation.

Breaking changes

• Remove the redundant refresh-derived command; use cub sync instead.

Full Changelog: v0.0.2...v0.1.0