flutter_crdt_sync_kit 0.1.0

An offline-first, CRDT-based local data layer for Flutter. Write while offline, merge automatically and conflict-free when back online, with pluggable Supabase and REST backend adapters.

0.1.0

Initial release.

• Op log + LWW-Register CRDT — every write is captured as an immutable, HLC-stamped Operation; field-level last-write-wins merge is deterministic regardless of delivery order.
• G-Counter / PN-Counter — grow-only and increment/decrement counters, idempotent under at-least-once delivery.
• OR-Set — add/remove collection CRDT with add-wins semantics for concurrent add/remove of the same element.
• Local persistence — InMemoryLocalStore (pure Dart) and DriftLocalStore (SQLite via drift), sharing one behavioral contract test suite.
• SyncedDoc<T> / SyncedCounter / SyncedSet<E> — reactive, offline-first public API backed by the CRDTs above.
• SyncEngine — background push/pull sync loop with batching, exponential backoff retry, connectivity-aware triggering, and realtime-adapter hinting.
• SupabaseSyncAdapter — push/pull via a Postgres table plus Supabase Realtime.
• RestSyncAdapter — push/pull against any backend implementing sync_kit's generic REST op-log contract.
• AesGcmOpEncryptor — optional end-to-end encryption of operation payloads at the sync boundary.
• SyncKitInspector — debug-mode widget visualizing the op log and live sync activity.
• Example app: two independent "devices" editing a shared to-do, vote counter and tag set, with an offline toggle per device, demonstrating live conflict-free merge.