fix(mysql): remove path-separator check from MysqlAgentStateStore session id validation

[zhaojinyu]

…ore session id validation
2.0.0-SNAPSHOT

[The version of AgentScope-Java you are working on, e.g. 1.0.12, check your pom.xml dependency version or run mvn dependency:tree | grep agentscope-parent:pom(only mac/linux)]

Summary

MysqlAgentStateStore.validateSessionId() rejects any session id containing / or , which makes it incompatible with legitimate callers such as SessionSandboxStateStore. This
PR removes that check because it is a filesystem-oriented constraint that has no meaning for a relational store and violates the AgentStateStore interface contract that other
implementations (e.g. JsonFileAgentStateStore) already honor.

Problem

SessionSandboxStateStore.slotSessionId(SandboxIsolationKey) composes a session id from the isolation scope, e.g.:

• sandbox/session/
• sandbox/user//
• sandbox/agent/
• sandbox/global

Every one of these contains / as a namespace delimiter. When the underlying AgentStateStore is MysqlAgentStateStore, every load/save/delete call goes through
validateSessionId(String) at MysqlAgentStateStore.java:811, which throws:

IllegalArgumentException: AgentStateStore ID cannot contain path separators
Result: sandbox lifecycle state cannot be persisted or resumed at all when MySQL is used as the state backend, so distributed sandbox resume — the very feature the
class-level Javadoc of SessionSandboxStateStore advertises — is broken for MySQL users.

Root Cause

The rejected characters (/, ) are path separators, not database characters. The error message itself gives away that this check was copied from a filesystem-oriented store.

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

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!