fix(jmanus): datatoolong for plan execution / header for mysql (alibaba#1832)

* fix(entity): update PlanExecutionRecord column definition to longtext for larger data storage

* fix(entity): update headers column definition to VARCHAR(2024) for better data handling

* fix(entity): update headers column definition to VARCHAR(2048) for improved data capacity

---------

Co-authored-by: rainerWJY <answeropensource@alibabacloud.com>

Author: rainerWJY

spring-ai-alibaba-jmanus/src/main/java/com/alibaba/cloud/ai/example/manus/dynamic/model/entity/DynamicModelEntity.java

@@ -37,7 +37,7 @@ public class DynamicModelEntity {
 	private String apiKey;
 
 	@Convert(converter = MapToStringConverter.class)
-	@Column(columnDefinition = "VARCHAR")
+	@Column(columnDefinition = "VARCHAR(2048)")
 	private Map<String, String> headers;
 
 	@Column(nullable = false)

spring-ai-alibaba-jmanus/src/main/java/com/alibaba/cloud/ai/example/manus/recorder/entity/PlanExecutionRecordEntity.java

@@ -42,7 +42,7 @@ public class PlanExecutionRecordEntity {
 	private Date gmtModified;
 
 	@Convert(converter = StringAttributeConverter.class)
-	@Column(columnDefinition = "text", length = 400000)
+	@Column(columnDefinition = "longtext")
 	private PlanExecutionRecord planExecutionRecord;
 
 	public Long getId() {