chore: 📝 Refactored documentation and added better sqlite support.

restructure server configuration for multiple instances  - Change server configuration to support multiple instances. - Introduce new fields for tracing and error tracking. - Update example configuration to reflect new structure. - Remove deprecated OpenAPI specification file. - Enhance database adapter to handle SQLite schema translation.

README.md

@@ -2,15 +2,15 @@
 
 ![1.00](https://github.com/bitechdev/ResolveSpec/workflows/Tests/badge.svg)
 
-ResolveSpec is a flexible and powerful REST API specification and implementation that provides GraphQL-like capabilities while maintaining REST simplicity. It offers **two complementary approaches**:
+ResolveSpec is a flexible and powerful REST API specification and implementation that provides GraphQL-like capabilities while maintaining REST simplicity. It offers **multiple complementary approaches**:
 
 1. **ResolveSpec** - Body-based API with JSON request options
 2. **RestHeadSpec** - Header-based API where query options are passed via HTTP headers
-3. **FuncSpec** - Header-based API to map and call API's to sql functions.
+3. **FuncSpec** - Header-based API to map and call API's to sql functions
+4. **WebSocketSpec** - Real-time bidirectional communication with full CRUD operations
+5. **MQTTSpec** - MQTT-based API ideal for IoT and mobile applications
 
-Both share the same core architecture and provide dynamic data querying, relationship preloading, and complex filtering.
-
-Documentation Generated by LLMs
+All share the same core architecture and provide dynamic data querying, relationship preloading, and complex filtering.
 
 ![1.00](./generated_slogan.webp)
 
@@ -21,7 +21,6 @@ Documentation Generated by LLMs
 * [Quick Start](#quick-start)
   * [ResolveSpec (Body-Based API)](#resolvespec---body-based-api)
   * [RestHeadSpec (Header-Based API)](#restheadspec---header-based-api)
-* [Migration from v1.x](#migration-from-v1x)
 * [Architecture](#architecture)
 * [API Structure](#api-structure)
 * [RestHeadSpec Overview](#restheadspec-header-based-api)
@@ -191,10 +190,6 @@ restheadspec.SetupMuxRoutes(router, handler, nil)
 
 For complete documentation, see [pkg/restheadspec/README.md](pkg/restheadspec/README.md).
 
-## Migration from v1.x
-
-ResolveSpec v2.0 maintains **100% backward compatibility**. For detailed migration instructions, see [MIGRATION_GUIDE.md](MIGRATION_GUIDE.md).
-
 ## Architecture
 
 ### Two Complementary APIs
@@ -235,9 +230,17 @@ Your Application Code
 
 ### Supported Database Layers
 
-* **GORM** (default, fully supported)
-* **Bun** (ready to use, included in dependencies)
-* **Custom ORMs** (implement the `Database` interface)
+* **GORM** - Full support for PostgreSQL, SQLite, MSSQL
+* **Bun** - Full support for PostgreSQL, SQLite, MSSQL
+* **Native SQL** - Standard library `*sql.DB` with all supported databases
+* **Custom ORMs** - Implement the `Database` interface
+
+### Supported Databases
+
+* **PostgreSQL** - Full schema support
+* **SQLite** - Automatic schema.table to schema_table translation
+* **Microsoft SQL Server** - Full schema support
+* **MongoDB** - NoSQL document database (via MQTTSpec and custom handlers)
 
 ### Supported Routers
 
@@ -429,6 +432,21 @@ Comprehensive event handling system for real-time event publishing and cross-ins
 
 For complete documentation, see [pkg/eventbroker/README.md](pkg/eventbroker/README.md).
 
+#### Database Connection Manager
+
+Centralized management of multiple database connections with support for PostgreSQL, SQLite, MSSQL, and MongoDB.
+
+**Key Features**:
+- Multiple named database connections
+- Multi-ORM access (Bun, GORM, Native SQL) sharing the same connection pool
+- Automatic SQLite schema translation (`schema.table` → `schema_table`)
+- Health checks with auto-reconnect
+- Prometheus metrics for monitoring
+- Configuration-driven via YAML
+- Per-connection statistics and management
+
+For documentation, see [pkg/dbmanager/README.md](pkg/dbmanager/README.md).
+
 #### Cache
 
 Caching system with support for in-memory and Redis backends.
@@ -500,7 +518,16 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 
 ## What's New
 
-### v3.0 (Latest - December 2025)
+### v3.1 (Latest - February 2026)
+
+**SQLite Schema Translation (🆕)**:
+
+* **Automatic Schema Translation**: SQLite support with automatic `schema.table` to `schema_table` conversion
+* **Database Agnostic Models**: Write models once, use across PostgreSQL, SQLite, and MSSQL
+* **Transparent Handling**: Translation occurs automatically in all operations (SELECT, INSERT, UPDATE, DELETE, preloads)
+* **All ORMs Supported**: Works with Bun, GORM, and Native SQL adapters
+
+### v3.0 (December 2025)
 
 **Explicit Route Registration (🆕)**:
 
@@ -518,12 +545,6 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 * **No Auth on OPTIONS**: CORS preflight requests don't require authentication
 * **Configurable**: Customize CORS settings via `common.CORSConfig`
 
-**Migration Notes**:
-
-* Update your code to register models BEFORE calling SetupMuxRoutes/SetupBunRouterRoutes
-* Routes like `/public/users` are now created per registered model instead of using dynamic `/{schema}/{entity}` pattern
-* This is a **breaking change** but provides better control and flexibility
-
 ### v2.1
 
 **Cursor Pagination for ResolveSpec (🆕 Dec 9, 2025)**:
@@ -589,7 +610,6 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 * **BunRouter Integration**: Built-in support for uptrace/bunrouter
 * **Better Architecture**: Clean separation of concerns with interfaces
 * **Enhanced Testing**: Mockable interfaces for comprehensive testing
-* **Migration Guide**: Step-by-step migration instructions
 
 **Performance Improvements**:
 
@@ -606,4 +626,3 @@ This project is licensed under the MIT License - see the [LICENSE](LICENSE) file
 * Slogan generated using DALL-E
 * AI used for documentation checking and correction
 * Community feedback and contributions that made v2.0 and v2.1 possible
-