Batch 232-A — MEASUREMENT: residual #3 (`FockStep`) needs TWO engines that are not in the tree (the recorded route's material is not them); first target = engine (L) at the (8.5.4) base

Definitions/MMFLM86FockStepRecon.lean (MM.FLM86FSR) is a reconnaissance file: every declaration the
recorded routes of residuals #3 and #4 name is #check'ed at source, and no new claim is made.  Its
header records the measurement:

* (L) the creation-mode-on-the-test-vector recursion for the face's field is NOT landed.  The
  (8.6.9)/(8.6.10) input is the annihilation-mode identity at e >= 1 (MM.FLM86C851E.ModeFieldCommAt)
  and does not give it; the only landed creation-mode identity is the one-anchor
  MM.FLM86ZOF.ZAligned_modeVL (the inserted state creationExpVL a 1 (anchorVL E a b)), which is the
  shape to generalise;
* (R) the same for the blocks blockOfShift = normOrdered2 is NOT landed either; only the raw material
  is in the tree (MM.FLM84TV.creationExpVL_comm, MM.FLM84TV.modeVL_comm_creationExpVL_neg,
  MM.FLM84RWC.annihExp_mul_creationExpVL_eq_sum_of_subset, MM.FLM86D866T.powerFam_nestedExp).  The
  state-slot commutator does not give it (batch 228's own measurement).

So #3 is not one lemma away.  HANDOVER §1.1 row 3 and §6 item 1, ROADMAP's frontier table and
NOTES §130 record the finding and the sharpened first target: engine (L) at the base of the (8.5.4)
induction, with the landed generator corner (honestNegPairingCoeff_at_generators_window) and the face
base (faceAtFamily_lattice) as inputs and ZAligned_modeVL as the shape to generalise.  Also recorded:
residual #4's generator slice runs the ~60-line l = 0 chain one recursion deeper, through
MM.FLM86MI.ZAligned_createdState + coherentFieldNat.

Correction of record: the namespace cited in HANDOVER row 3 for
annihExp_mul_creationExpVL_eq_sum_of_subset is MM.FLM84RWC (file MMFLM84RatioWindowClose.lean), not
MM.FLM86RWC.

Acceptance: the recon file builds OK (every name verified); Probe/forbidden_tokens.py all zeros on it;
FinalCheck.lean GREEN with the new import; no new sorry and no new declaration.
