Decision: Fleet scheduling, leases, and workspace ownership

[2233admin]

Question

How does the primary controller schedule a bounded Agent fleet without turning parallel work into uncontrolled shared mutation?

Resolve task decomposition, worker leases, workspace or branch ownership, same-file conflicts, dependent versus independent branches, merge admission, retries, and the local-freeze/global-continue rule. The answer must support one user driving several machines while keeping the controller as the policy and evidence arbiter.