docs(sync): finalize phase 4 docs and full test readiness

Author: MPCoreDeveloper

docs/PROJECT_STATUS.md

@@ -2,7 +2,7 @@
 
 **Version:** 1.4.0  
 **Status:** ✅ Production Ready  
-**Last Updated:** February 20, 2026
+**Last Updated:** February 27, 2026
 
 ## 🎯 Current Status
 
@@ -14,6 +14,7 @@ SharpCoreDB is a **production-ready, high-performance embedded database** for .N
 - ✅ **10.1 Dotmim.Sync Integration** - Bidirectional sync with SQL Server, PostgreSQL, MySQL
 - ✅ **10.2 Multi-Master Replication** - Vector clock-based causality tracking, automatic conflict resolution
 - ✅ **10.3 Distributed Transactions** - Two-phase commit protocol across shards
+- ✅ **Sync Provider Validation (Phase 4 final pass)** - Full provider suite stable (`84/84` passing), documentation finalized, ready for full-system test runs
 
 #### Phase 9: Advanced Analytics Engine (v1.3.5)
 - ✅ **9.2 Statistical Aggregates** - STDDEV, VARIANCE, CORRELATION, PERCENTILE, HISTOGRAM
@@ -188,6 +189,6 @@ SharpCoreDB is used in production by:
 
 ---
 
-**Last Updated:** February 20, 2026  
+**Last Updated:** February 27, 2026  
 **Version:** 1.4.0  
 **Status:** ✅ Production Ready

docs/sync/CHANGELOG.md

@@ -0,0 +1,32 @@
+# SharpCoreDB.Provider.Sync Changelog
+
+## 1.0.0 (Initial Release)
+
+### Added
+
+- Dotmim.Sync `CoreProvider` implementation via `SharpCoreDBSyncProvider`
+- Per-table sync commands via `SharpCoreDBSyncAdapter`
+- Provisioning builders:
+  - `SharpCoreDBDatabaseBuilder`
+  - `SharpCoreDBTableBuilder`
+  - `SharpCoreDBScopeInfoBuilder`
+- Change tracking services:
+  - `IChangeTrackingManager` / `ChangeTrackingManager`
+  - `ITombstoneManager` / `TombstoneManager`
+  - `TrackingTableBuilder`
+- Type mapping service `SharpCoreDBDbMetadata`
+- DI integration via `AddSharpCoreDBSync`
+
+### Validation
+
+- Full provider suite passing: **84/84**
+- Integration + scenario + performance + error-path tests complete
+
+### Critical stability fixes included in 1.0.0 baseline
+
+- Correct PRIMARY KEY parsing in single-file DDL path
+- Complete DI graph registration for change-tracking dependencies
+- Programmatic `RecordChangeAsync` for non-trigger engines
+- Correct `WHERE` handling in single-file table CRUD path
+- Quoted-identifier handling for `DROP TABLE IF EXISTS`
+- Support for ORDER BY column position (`ORDER BY 2`)