docs: update version to v1.2.0 in CHANGELOG and README

Author: sim-wangyan

CHANGELOG.md

@@ -5,7 +5,58 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [1.1.0] - 2025-01-XX
+## [1.2.0] - 2025-01-XX
+
+### 🎨 Complete API Unification (Major Improvement over v1.1.0)
+
+**Design Philosophy**: Don't add concepts to solve problems. Less is more.
+
+### Added
+- **Unified Insert API**: `Insert(func(ib *InsertBuilder))` works for both SQL and vector databases
+- **Smart Format Detection**: QdrantCustom automatically handles Insert(func) format
+- **Vector Array Support**: `[]float32` and `[]float64` preserved in InsertBuilder/UpdateBuilder
+- **Convenience Methods**:
+  - `Built.SqlOfUpsert()` - MySQL UPSERT without Custom
+  - `Built.SqlOfInsertIgnore()` - MySQL INSERT IGNORE without Custom
+
+### Removed (Simplification)
+- **Preset Constructors** (complexity removed):
+  - ❌ `QdrantHighPrecision()`, `QdrantHighSpeed()`, `QdrantBalanced()`
+  - ❌ `MySQLWithUpsert()`, `MySQLWithIgnore()`
+  - ❌ `InsertPoint()`, `InsertPoints()` methods
+  - ❌ `Delete()` method (not needed)
+
+### Changed
+- `JsonOfDelete()` now auto-sets `built.Delete = true` internally
+- Only basic constructors remain: `NewQdrantCustom()`, `NewMySQLCustom()`
+- Users configure via fields or existing closures (`QdrantX()`)
+
+### Why v1.2.0 (Not v1.1.1)?
+
+v1.1.0 had design issues:
+- Too many preset functions (5 removed)
+- Inconsistent API (InsertPoint vs Insert)
+- Over-engineered solutions
+
+v1.2.0 achieves true simplicity:
+- ✅ One `Insert(func)` API for all databases
+- ✅ One `Update(func)` API for all databases
+- ✅ No extra methods needed
+- ✅ Complete unification
+
+### Tests
+- 140+ tests, all passing
+- New tests for unified Insert/Update/Delete API
+- Comprehensive Qdrant CRUD validation
+
+### Documentation
+- All docs updated to reflect simplified design
+- Removed references to preset constructors
+- Added unified API examples
+
+---
+
+## [1.1.0] - 2025-01-XX (Deprecated - Use v1.2.0)
 
 ### Added
 - **Custom Interface**: Unified abstraction for database-specific features

README.md

@@ -13,23 +13,23 @@ or build condition sql for some orm framework, like [xorm](https://github.com/go
 also can build json for some json parameter db, like [Qdrant](https://github.com/qdrant/qdrant) ....
 
 
-> 🎉 **v1.1.0 Released**: Custom Interface for Database-Specific Features! Full CRUD support for vector databases.
+> 🎉 **v1.2.0 Released**: Complete API Unification! One Insert/Update/Delete API for SQL and vector databases.
 
 ---
 
-## 🚀 NEW: Custom Interface (v1.1.0)
+## 🚀 NEW: Unified CRUD API (v1.2.0)
 
 **Unified abstraction for SQL and Vector Databases with database-specific features!**
 
-**✨ New in v1.1.0**:
-- 🎯 **Custom Interface** - Unified abstraction for all database types
-- 📝 **Full CRUD** - Insert/Update/Delete support for vector databases
-- 🔧 **Official Implementations** - QdrantCustom (full CRUD), MySQLCustom (UPSERT)
-- 🏗️ **Extensible Architecture** - One `Generate()` method handles all operations
-- 📚 **Complete Documentation** - Templates and guides for custom implementations
+**✨ New in v1.2.0**:
+- 🎯 **Complete API Unification** - One `Insert(func)` for SQL and vector databases
+- 📝 **No Extra Methods** - No InsertPoint, no Delete(), just the essentials
+- 🔧 **Smart Detection** - Custom automatically handles different data formats
+- 🏗️ **Extreme Simplicity** - Removed 5 preset functions, kept only basics
+- 📚 **Convenience Methods** - SqlOfUpsert(), SqlOfInsertIgnore() for common cases
 
 ```go
-// MySQL UPSERT (v1.1.0) - 无需 Custom
+// MySQL UPSERT (v1.2.0) - 无需 Custom
 built := xb.Of(user).
     Insert(func(ib *xb.InsertBuilder) {
         ib.Set("id", user.ID).
@@ -40,7 +40,7 @@ built := xb.Of(user).
 sql, args := built.SqlOfUpsert()
 // INSERT INTO users ... ON DUPLICATE KEY UPDATE ...
 
-// Qdrant Vector Search (v1.1.0)
+// Qdrant Vector Search (v1.2.0)
 built := xb.Of(&CodeVector{}).
     Custom(xb.NewQdrantCustom()).
     Eq("language", "golang").