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Add comprehensive AI agent documentation for Musoq architecture and development (#108)
* Initial plan * Complete comprehensive AI agent documentation for Musoq Co-authored-by: Puchaczov <[email protected]> --------- Co-authored-by: copilot-swe-agent[bot] <[email protected]> Co-authored-by: Puchaczov <[email protected]> Co-authored-by: Jakub Puchała <[email protected]>
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‎.copilot/INDEX.md‎

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# .copilot Documentation Index
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This directory contains comprehensive documentation for AI agents working with the Musoq SQL query engine codebase.
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## Documentation Files
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### 📖 [README.md](./README.md)
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**Main documentation entry point** - Comprehensive overview covering architecture, components, development workflow, and testing strategies. Start here for a complete understanding of the Musoq system.
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**Key Topics:**
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- Quick start and essential understanding
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- Architecture overview and design principles
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- Core component deep dive (Parser, Schema, Converter, Evaluator, Plugins)
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- Plugin development basics
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- Query processing pipeline
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- Development workflow and project structure
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- API usage patterns
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- Testing strategies
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- Build and deployment
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- Troubleshooting guide
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- Key files reference
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### 🏗️ [architecture-deep-dive.md](./architecture-deep-dive.md)
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**Detailed technical architecture** - In-depth analysis of each component's internal architecture, design patterns, and integration strategies.
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**Key Topics:**
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- Component architecture details
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- Parser module internals (AST, lexing, precedence)
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- Schema module abstractions (ISchema, RowSource, data flow)
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- Converter build chain pipeline
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- Evaluator compilation and execution
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- Plugin system architecture
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- Integration patterns
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- Performance considerations
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- Memory management and optimization
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### 🔌 [plugin-development-guide.md](./plugin-development-guide.md)
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**Complete plugin development reference** - Step-by-step guide for creating data sources and function libraries.
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**Key Topics:**
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- Data source plugin creation (schema, row source, entities)
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- Advanced row source patterns (chunking, parameterization)
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- Dynamic schema support and runtime column discovery
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- Function library development (basic, generic, aggregation)
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- Complex function examples (JSON, HTTP/Web)
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- Plugin registration and deployment
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- Testing plugin development
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- Best practices for performance and error handling
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### 🛠️ [development-debugging-guide.md](./development-debugging-guide.md)
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**Development environment and debugging** - Comprehensive guide for setting up development environment and debugging techniques.
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**Key Topics:**
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- Development environment setup
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- Component-specific development cycles
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- Debugging techniques (AST, code generation, execution, schema resolution)
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- Testing strategies (unit, integration, performance)
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- Build and CI/CD configuration
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- Troubleshooting common issues (parse errors, schema failures, compilation errors)
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- Performance optimization and profiling
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### 💻 [api-usage-examples.md](./api-usage-examples.md)
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**Practical API usage and examples** - Real-world examples and usage patterns for integrating Musoq.
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**Key Topics:**
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- Core API overview (InstanceCreator, analysis API)
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- Schema provider implementation patterns
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- Data source examples (in-memory, REST API, database)
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- Advanced usage patterns (parameterization, dynamic registration, streaming)
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- Query analysis and optimization
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- Error handling and logging
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- Testing API usage
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## Quick Navigation
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### For New Contributors
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1. Start with [README.md](./README.md) - Quick Start section
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2. Read [architecture-deep-dive.md](./architecture-deep-dive.md) - Component Architecture
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3. Follow [development-debugging-guide.md](./development-debugging-guide.md) - Development Environment Setup
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### For Plugin Developers
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1. Review [README.md](./README.md) - Plugin Development section
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2. Follow [plugin-development-guide.md](./plugin-development-guide.md) - Complete guide
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3. Reference [api-usage-examples.md](./api-usage-examples.md) - Data source examples
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### For API Integration
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1. Study [api-usage-examples.md](./api-usage-examples.md) - Core API and examples
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2. Reference [README.md](./README.md) - API Usage Patterns
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3. Check [development-debugging-guide.md](./development-debugging-guide.md) - Testing strategies
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### For Debugging Issues
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1. Check [development-debugging-guide.md](./development-debugging-guide.md) - Troubleshooting section
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2. Review [README.md](./README.md) - Troubleshooting Guide
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3. Use [architecture-deep-dive.md](./architecture-deep-dive.md) - Component internals
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### For Performance Optimization
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1. Review [architecture-deep-dive.md](./architecture-deep-dive.md) - Performance Considerations
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2. Check [development-debugging-guide.md](./development-debugging-guide.md) - Performance Optimization
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3. Study [plugin-development-guide.md](./plugin-development-guide.md) - Best Practices
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## Key Concepts Quick Reference
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### Core Architecture
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- **Parser**: SQL → AST (Abstract Syntax Tree)
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- **Schema**: Data source abstraction and contracts
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- **Converter**: AST → C# code generation
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- **Evaluator**: Dynamic compilation and execution
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- **Plugins**: Extensible function library
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### Data Flow
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```
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SQL Query → Lexer → Parser → AST → Converter → C# Code → Compiler → Assembly → Executor → Results
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```
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### Essential Classes
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- `Parser` - Main parsing logic
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- `ISchema` - Plugin interface for data sources
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- `RowSource` - Data iteration abstraction
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- `CompiledQuery` - Executable query wrapper
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- `InstanceCreator` - Main API entry point
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### Plugin Pattern
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```csharp
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ISchema → SchemaBase → YourSchema
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↓
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RowSource → YourRowSource
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↓
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Your Entity Classes
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```
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### Testing Pattern
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```csharp
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[TestClass]
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public class YourTests : BasicEntityTestBase
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{
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[TestMethod]
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public void Should_Test_Feature()
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{
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var vm = CreateAndRunVirtualMachine(query, data);
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var results = vm.Run();
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// Assertions
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}
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}
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```
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---
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This documentation is designed specifically for AI agents and provides comprehensive coverage of the Musoq codebase for development, debugging, and extension purposes.

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