Remove AgentRuntime default max ttl

[hzxuzhonghu]

What would you like to be added:

As agent itself maybe long running, like if user want to host openclaw within agentcube agentRuntime, it cannot be deleted after 8 hour.

[hzxuzhonghu]

cc @YaoZengzeng @acsoto

[acsoto]

AgentRuntime.spec.maxSessionDuration currently defaults to 8h, and workload-manager always converts it into Sandbox.Spec.Lifecycle.ShutdownTime, so even an active long-running AgentRuntime can be deleted after 8 hours. For AgentRuntime, I think this should be opt-in; sessionTimeout can still handle idle cleanup. CodeInterpreter can keep the current default max duration.

I can send a PR to make AgentRuntime maxSessionDuration optional/no-default and only set ShutdownTime when it is explicitly configured.

[hzxuzhonghu]

Yeah totally match

[acsoto]

/assign

[nXtCyberNet]

Hi @acsoto, I know this issue is already self-assigned to you, but since it's a small change, it would also be a great opportunity for me to learn the codebase. Would you be open to letting me open a PR for it? Happy to defer if you'd prefer to handle it yourself. Thanks!

[acsoto]

@nXtCyberNet Sure, feel free to take it. Sorry I missed this earlier, I was busy the last couple of days.

[HarshitPal25]

hello @acsoto if no one is working on the issue can i take it i have solved the issue locally if you allow me i just have to make a pr for it

[acsoto]

@HarshitPal25 Yes Pls refer to this issue

[hzxuzhonghu]

Anyone can take over it

[FAUST-BENCHOU]

/assign