docs: update project documentation

- Updated README.md with new architecture
- Updated CHANGELOG.md with v1.0.0 changes
- Updated SECURITY.md with security policy
- Updated CONTRIBUTING.md with contribution guide
- Added TROUBLESHOOTING.md for common issues

Author: Zaiidmo

CHANGELOG.md

@@ -2,11 +2,205 @@
 
 All notable changes to this project will be documented in this file.
 
-The format is based on [Keep a Changelog](https://keepachangelog.com/),
-and this project adheres to [Semantic Versioning](https://semver.org/).
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+---
 
 ## [Unreleased]
 
-## [1.0.0] - YYYY-MM-DD
+### Planned
+
+- MySQL adapter support
+- Redis caching layer
+- Query builder interface
+- Soft delete built-in support
+- Audit logging
+
+---
+
+## [1.0.0] - 2026-01-31
+
+### 🎉 Initial Release
+
+Complete refactoring following CISCODE AuthKit patterns and best practices.
+
 ### Added
-- Initial release.
+
+#### Core Features
+
+- **Unified Repository API** - Same interface for MongoDB and PostgreSQL
+  - `create(data)` - Create new records
+  - `findById(id)` - Find by primary key
+  - `findAll(filter)` - Find all matching records
+  - `findPage(options)` - Paginated queries
+  - `updateById(id, data)` - Update by primary key
+  - `deleteById(id)` - Delete by primary key
+  - `count(filter)` - Count matching records
+  - `exists(filter)` - Check if records exist
+
+#### NestJS Integration
+
+- **DatabaseKitModule** - NestJS module with DI support
+  - `forRoot(options)` - Synchronous configuration
+  - `forRootAsync(options)` - Async configuration with factory
+  - `forFeature(token, config)` - Multiple database connections
+
+#### Database Adapters
+
+- **MongoAdapter** - MongoDB support via Mongoose
+  - Connection pooling
+  - Auto-reconnection
+  - Lean queries by default
+- **PostgresAdapter** - PostgreSQL support via Knex
+  - Connection pooling
+  - Advanced filter operators (gt, gte, lt, lte, in, nin, like, etc.)
+  - Column whitelisting for security
+
+#### Services
+
+- **DatabaseService** - Main facade for database operations
+  - Unified interface for both databases
+  - Connection lifecycle management
+  - Repository factory methods
+- **LoggerService** - Structured logging
+  - NestJS Logger integration
+  - Context-aware logging
+
+#### Middleware
+
+- **@InjectDatabase()** - Decorator for injecting DatabaseService
+- **@InjectDatabaseByToken(token)** - Decorator for named connections
+
+#### Filters
+
+- **DatabaseExceptionFilter** - Global exception handling
+  - MongoDB error parsing
+  - PostgreSQL error parsing
+  - Consistent error response format
+
+#### Utilities
+
+- Pagination helpers (`normalizePaginationOptions`, `calculatePagination`)
+- Validation helpers (`isValidMongoId`, `isValidUuid`, `sanitizeFilter`)
+
+#### Configuration
+
+- Environment-driven configuration
+- Config validation with fail-fast errors
+- Connection string validation
+
+#### Documentation
+
+- Comprehensive README with examples
+- SECURITY.md with vulnerability reporting guidelines
+- TROUBLESHOOTING.md with common issues
+- CONTRIBUTING.md with development guidelines
+- copilot-instructions.md for AI-assisted development
+
+### Changed
+
+#### Architecture Improvements
+
+- Restructured to follow AuthKit patterns
+- Separated concerns into adapters, services, and contracts
+- Moved from `core/` structure to proper layer separation
+
+#### Naming Conventions
+
+- All files now use kebab-case with suffixes
+- Consistent class naming (PascalCase)
+- Consistent function naming (camelCase)
+
+#### TypeScript Improvements
+
+- Added path aliases for clean imports
+- Stricter TypeScript configuration
+- Full type coverage with no implicit any
+
+### Fixed
+
+- N/A (initial release)
+
+### Security
+
+- Column whitelisting for PostgreSQL repositories
+- Parameterized queries to prevent injection
+- Error sanitization in exception filter
+- No credentials in error messages
+
+### Breaking Changes
+
+- N/A (initial release)
+
+---
+
+## Pre-1.0 History
+
+### [0.x.x] - Development
+
+- Initial development and prototyping
+- Basic MongoDB and PostgreSQL adapters
+- Simple NestJS module integration
+
+---
+
+## Migration Guide
+
+### From Pre-1.0 to 1.0.0
+
+If you were using a pre-release version, follow these steps:
+
+1. **Update imports:**
+
+   ```typescript
+   // Before
+   import { Database } from "@ciscode/database-kit/core/database";
+
+   // After
+   import { DatabaseService } from "@ciscode/database-kit";
+   ```
+
+2. **Update module configuration:**
+
+   ```typescript
+   // Before
+   DatabaseModule.forRoot(config);
+
+   // After
+   DatabaseKitModule.forRoot({ config });
+   ```
+
+3. **Update decorator usage:**
+
+   ```typescript
+   // Before
+   @InjectDatabase() private db: Database
+
+   // After
+   @InjectDatabase() private db: DatabaseService
+   ```
+
+4. **Update repository creation:**
+   ```typescript
+   // Methods remain the same
+   const repo = db.createMongoRepository<User>({ model: UserModel });
+   ```
+
+---
+
+## Release Schedule
+
+We follow semantic versioning:
+
+- **Patch releases (x.x.X)**: Bug fixes, released as needed
+- **Minor releases (x.X.0)**: New features, ~monthly
+- **Major releases (X.0.0)**: Breaking changes, ~annually
+
+---
+
+## Links
+
+- [GitHub Releases](https://github.com/CISCODE-MA/DatabaseKit/releases)
+- [npm Package](https://www.npmjs.com/package/@ciscode/database-kit)
+- [Documentation](https://github.com/CISCODE-MA/DatabaseKit#readme)

CODE_OF_CONDUCT

@@ -45,7 +45,7 @@ It also applies when individuals are representing the project in public spaces.
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be reported to the project maintainers at:
 
-**<YOUR_CONTACT_EMAIL_OR_SECURITY_EMAIL>**
+**info@ciscode.com**
 
 All complaints will be reviewed and investigated promptly and fairly.