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+[usc ACK FCM M3-001 COMPLETE / M3-002 TEST-ONLY] Recorded squash 49909050 + descendant #1838 green and #758 open. No USC collision. Homelab may own M3-002 only on reserved `test/758-reconciler-lifecycle-gates` for isolated fake-systemd/tmux acceptance tests, stopping uncommitted for review. All live/systemd/tmux/site/FLT-010/migration/canary/deploy/runtime/connector/remote holds remain.