Add textgen definitions for all Phase 1 AST concepts
- Added ConceptTextGenDeclaration nodes for all 38 Phase 1 concepts
- Includes textgen rules for core concepts (Module, Function, Parameter, Variable)
- Textgen rules for statements (Block, Assignment, If, Loops, Return, etc.)
- Textgen rules for expressions (BinaryOp, UnaryOp, FunctionCall, Literals, etc.)
- Textgen rules for types (Primitive, List, Set, Map, Tuple, Array, Optional, Custom)
- Textgen rules for annotations (Annotation, DerefStrategy, OptimizationLock, LangSpecific)
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
a0290ae51d