Sandbox agents with remote VMs in MiniCode

Currently remote agents are executed on local FS. Write a small launcher script that executes scripts on remote sandbox after cloning and setting up context.

Start by locating the current local filesystem execution path for remote agents, then trace where cloning and context setup occur. Identify the available remote sandbox or VM interface and define how completion will be verified; the issue does not name files, tests, or a specific VM mechanism.

由索引模型根据 Issue 内容生成。