docs(remediation): RM-62 — fleet management is a PREREQUISITE, and the rotation claim is corrected

Mos ruled (c): coder-mos1 stays idle/parked, not manually rotated. It holds no in-flight work, so
there is nothing to rotate FOR, and a manual in-pane restart would dress a missing mechanism as a
lifecycle operation — the D-41 overclaim itself. It stays AVAILABLE through RM-61's re-review in case
that review needs its context; the next NEW lane goes to a fresh seat, not to a seat at 67%.

RM-62 filed, because a dependency stated as prose with no owner becomes the permanent gap the charter
warns about. Bringing the execution fleet under roster/systemd management BLOCKS RM-50, RM-58 and
P-LIFECYCLE-001 — each is unsatisfiable against its real population until it lands. Banked explicitly
that both would FAIL against their real target today: RM-50 applied now quarantines the seat
implementing RM-50, and RM-58 has no mechanical reset path for any seat that needs one. RM-50 and
RM-58 now carry RM-62 as a hard depends_on edge, and RM-50 carries the requirement that acceptance be
proved against the unmanaged execution fleet rather than the roster-managed canaries.

RECORD CORRECTION, initiated by Mos and banked here: this session's opening rotation validated the
checkpoint+rehydration DESIGN losslessly — the residency attestation genuinely passed from the files —
but the MECHANISM was a manual pane respawn. "The handoff rehydrated losslessly" is earned; "rotation
worked" overclaims a mechanism that does not exist, and that overclaim is D-41. Same distinction as
D-23's inert guard: the step ran, one property was observed, the mechanism was not. Board header now
says so rather than implying a lifecycle rotation occurred.

D-37 and D-41 are one cluster — the execution fleet lacks both its shared-infrastructure and its
lifecycle management. Mos owns both, sequenced at a seam, never mid-lane.

Co-Authored-By: Claude Opus 5 (1M context) <[email protected]>

docs/remediation/BOARD.md

@@ -1,8 +1,9 @@
 # mos-remediation — LIVE BOARD (keep < 8 KB)
 
 **Phase:** EXECUTING — RM-03 at owner-merge; RM-02 blocked on RM-61; RM-61 **rebuilding on D-40 BLOCKING**.
-**Updated:** 2026-08-01 — rotation seam CROSSED; successor seat resumed, attested, and is driving.
-(Prior seat rotated at ~803k tokens, ~4x threshold.)
+**Updated:** 2026-08-01 — seam crossed; successor seat resumed, attested from the files, and is driving.
+⚠ That was a **MANUAL pane respawn** (prior seat ~803k tokens): it validates the checkpoint+rehydration
+**design**, NOT a lifecycle **mechanism** — P-LIFECYCLE rotation does not exist yet (**D-41 / RM-62**).
 
 ## Head