* feat(fleet): add openclaw fleet cell supervisor for multi-tenant hosting
* test(fleet): cover cell profile, registry, containers, and service flows
* docs(fleet): document multi-tenant hosting and the fleet CLI
* fix(fleet): verify upgrade replacements and release foreign-collision reservations
* fix(fleet): gate upgrade commit on replacement health
* docs(fleet): mark fleet experimental and pin its single-host scope
* test(fleet): make incomplete-profile casts explicit for test-type lane
* fix(state): regenerate kysely schema artifacts after rebase conflict