Add Comprehensive TASKS.md Documentation

[devin-ai-integration]

Add Comprehensive TASKS.md Documentation

This PR adds a comprehensive TASKS.md file to the packages/transform directory to document our PostgreSQL AST transformation project.

What's Added

• Complete project overview - Goals, architecture, and technical objectives
• Setup instructions - Installation, build, and development environment setup
• Testing strategy - Unit tests, integration tests, and end-to-end testing workflow
• Current status - Completed features, active development areas, and key transformations
• Development workflow - Guidelines for adding transformations and debugging issues
• Key challenges & solutions - Documentation of major technical hurdles we've overcome

Why This Documentation is Important

This documentation will help us:

• Track progress on the PostgreSQL AST transformation system (v13→v17)
• Provide clear setup instructions for new contributors
• Document our test-driven approach and fixture testing system
• Keep track of the complex AST transformation rules we've implemented
• Maintain consistency with the deparser visitor pattern we're following

Key Sections

Project Goals

• Eliminate any types with precise type-safe transformations
• Sequential version transformations (13→14, 14→15, 15→16, 16→17)
• Semantic equivalence preservation across PostgreSQL versions
• Complex node type conversions (A_Const, ObjectWithArgs, Integer fields)

Architecture Documentation

• Base transformer infrastructure with dynamic method dispatch
• Version-specific transformers for each transition
• Orchestration layer for chaining transformations
• Comprehensive test infrastructure

Current Implementation Status

• ✅ V13ToV14Transformer with ObjectWithArgs context-sensitive handling
• ✅ V14ToV15Transformer with A_Const restructuring and Integer field preservation
• ✅ End-to-end integration testing framework
• ✅ Kitchen-sink test suites for real-world SQL validation

Testing Transparency

What I Actually Checked

• ✅ Created comprehensive TASKS.md with 202 lines of documentation
• ✅ Verified file structure and markdown formatting
• ✅ Included all major project components and current status
• ✅ Documented setup instructions and testing workflow
• ✅ Added development guidelines and debugging approaches

What I Did Not Check

• Did not run the full test suite to verify current status accuracy
• Did not validate all external links or references
• Did not test the setup instructions on a fresh environment

Link to Devin run

https://app.devin.ai/sessions/e79d6f3294f242d291989348b4fb543a

Requested by: Dan Lynch ([email protected])

[devin-ai-integration]

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