26ff8f2ac9
Resolves the four-file conflict with PR #444, which landed a parallel implementation of the same batch-fsync design (unsynced chunk writes plus one sync_blobs durability barrier). Both sides converged on identical trait signatures; main's version is kept for all overlapping code since it is already merged and carries unit tests: - blob_storage_ports.rs: doc-comment-only conflict, main's docs kept - dedup_service.rs: main's pipeline kept. The naive textual merge would have retained BOTH durability-barrier/INSERT blocks, double-counting ref_count for every new chunk; the duplicated block from this branch is dropped - encrypted_blob_backend.rs, local_blob_backend.rs: main's implementations kept (fsync_paths_parallel + tests); this branch's equivalent helpers (fsync_dir, fsync_blob_file, SYNC_BLOBS_CONCURRENCY) are referenced nowhere else and are dropped Everything unique to this branch (streaming PROPFIND, range requests, batch ID resolution, CalDAV/CardDAV indexed lookups, transcode and breadcrumb changes) merges cleanly and is unchanged. https://claude.ai/code/session_01GpprjxjtXFYLfXNkoKnHuL