feat(session): Improve mysql session sql

[guanxuc]

AgentScope-Java Version

1.0.11

Description

• Closes: [Feature]: MysqlSession should use datetime(3) instead of timestamp to create table #991
• Closes: [Feature]: MysqlSession clearAllSessions should use truncate instead of delete from #992
• Use DATETIME instead of TIMESTAMP for mysql field
• Use TRUNCATE instead of DELETE from table

Checklist

Please check the following items before code is ready to be reviewed.

• Code has been formatted with mvn spotless:apply
• All tests are passing (mvn test)
• Javadoc comments are complete and follow project conventions
• Related documentation has been updated (e.g. links, examples, etc.)
• Code is ready for review

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
...io/agentscope/core/session/mysql/MysqlSession.java	66.66%	2 Missing ⚠️

📢 Thoughts on this report? Let us know!

[guanxuc]

@LearningGp Thanks for your good advice, I have updated the code and the java docs. Keep both clearAllSessions and truncateAllSessions and deprecated clearAllSessions method.

[LearningGp]

LGTM