Codex symmetry-gap finding. Three fixes completing add/remove boot-survival symmetry: 1. disable-on-remove (BUG, TDD): fleet remove stopped + deleted roster/env/ heartbeat but never disabled the systemd unit, so a removed-but-enabled [email protected] could resurrect on reboot pointing at deleted config. Add buildSystemdDisableCommand + disable in remove (best-effort, gated on !--keep-files). 2. add-enable: fleet add now enables the new agent's unit for boot-survival (best-effort, independent of --start). 3. init-R5 guarantee: fleet init --write now fails hard when a non-minimal profile lacks exactly one orchestrator (was a soft warning); the sanctioned no-orchestrator 'minimal' preset is still allowed. Verified: 4 new tests (disable builder; remove-invokes-disable; add-invokes- enable; init general → exactly 1 orchestrator) + 147 existing fleet tests green (151 total); tsc/eslint/prettier clean. Refs #611 Co-Authored-By: Claude Opus 4.8 <[email protected]> Claude-Session: https://claude.ai/code/session_01EsgTQzV5YUGk1JtCLP4B83