feat(type-system): implement concept_comparison with pattern matching

Added complete support for the new type system syntax including:

- concept: Base type declarations
- sub_concept: Enum and record sub-type definitions
- concept_comparison: Compile-time pattern matching with conditional guards

Parser changes:
- Added VariantPattern, FieldCondition, and Condition AST nodes
- Implemented "is" keyword for pattern matching (e.g., "CupType is Glass or CupType is Plastic")
- Added Value::Any variant to support universal type matching
- Disambiguated enum-like vs record-like sub_concept syntax

LSP updates:
- Added Value::Any match arms across code_actions, completion, hover, inlay_hints, and semantic_tokens
- Type inference and formatting support for Any values

Example fixes:
- Fixed syntax error in baker-family behaviors (missing closing brace in nested if)
- Removed deprecated core_enums.sb file

src/lsp/inlay_hints.rs

@@ -154,6 +154,7 @@ fn add_type_hint(
         | Value::Duration(_) => false,  // Duration format is clear
         | Value::ProseBlock(_) => false, // Prose is obvious
         | Value::Override(_) => true,   // Show what's being overridden
+        | Value::Any => true,           // Show Any type marker
     };
 
     if !should_hint {
@@ -201,5 +202,6 @@ fn infer_value_type(value: &Value) -> String {
         | Value::Duration(_) => "Duration".to_string(),
         | Value::ProseBlock(_) => "Prose".to_string(),
         | Value::Override(_) => "Override".to_string(),
+        | Value::Any => "Any".to_string(),
     }
 }