Add VARYING and FOR REPLICATION parsing for procedures

- Parse VARYING keyword after CURSOR type for procedure parameters
- Parse FOR REPLICATION after WITH options in CREATE PROCEDURE

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: kyleconroy

parser/parse_statements.go

@@ -4565,6 +4565,15 @@ func (p *Parser) parseCreateProcedureStatement() (*ast.CreateProcedureStatement,
 		}
 	}
 
+	// Parse optional FOR REPLICATION
+	if strings.ToUpper(p.curTok.Literal) == "FOR" {
+		p.nextToken() // consume FOR
+		if strings.ToUpper(p.curTok.Literal) == "REPLICATION" {
+			stmt.IsForReplication = true
+			p.nextToken() // consume REPLICATION
+		}
+	}
+
 	// Expect AS
 	if p.curTok.Type == TokenAs {
 		p.nextToken()
@@ -4664,6 +4673,12 @@ func (p *Parser) parseProcedureParameters() ([]*ast.ProcedureParameter, error) {
 			}
 		}
 
+		// Parse optional VARYING (for CURSOR type)
+		if strings.ToUpper(p.curTok.Literal) == "VARYING" {
+			param.IsVarying = true
+			p.nextToken()
+		}
+
 		// Parse optional default value
 		if p.curTok.Type == TokenEquals {
 			p.nextToken()