Add standalone HASH support for inline index definitions

Handle HASH keyword without preceding NONCLUSTERED in table-level inline
index definitions. When HASH appears directly after UNIQUE, it is now
correctly interpreted as NonClusteredHash index type.

Author: claude

parser/parse_statements.go

@@ -479,6 +479,10 @@ func (p *Parser) parseInlineIndexDefinition() (*ast.IndexDefinition, error) {
 		// Implicit NONCLUSTERED COLUMNSTORE
 		indexDef.IndexType = &ast.IndexType{IndexTypeKind: "NonClusteredColumnStore"}
 		p.nextToken()
+	} else if strings.ToUpper(p.curTok.Literal) == "HASH" {
+		// Implicit NONCLUSTERED HASH
+		indexDef.IndexType = &ast.IndexType{IndexTypeKind: "NonClusteredHash"}
+		p.nextToken()
 	}
 
 	// Parse column list

parser/testdata/CreateTableTests120/metadata.json

@@ -1 +1 @@
-{"todo": true}
+{}

parser/testdata/UniqueInlineIndex130/metadata.json

@@ -1 +1 @@
-{"todo": true}
+{}