Batch 239-A ACCEPTED -- the matching package left the ledger: MMFLM810Theorem8102Stated.lean has no `sorry` of its own; registered holes 4 -> 2

Definitions/MMFLM810Theorem8102Stated.lean:

* REMOVED: the two holes fockStep_evenCocycle (#3) and secondSlot_evenCocycle (#4) plus their four
  consumers honestNegPairingCoeff_evenCocycle, residueMatching8625_evenCocycle,
  evenCocycleResidualsCorrectedNormal_evenCocycle and the old matching-based proof of
  corollary851AllStatesExists_evenCocycle.  They were off Theorem 8.10.2's dependency path since batch
  238-A, and the matching ((8.6.25)/(8.6.27) in the honest currency) is strictly STRONGER than 8.8.9's
  statement, so it cannot be derived from the 8.8.9 hole; its content is part of 8.8.9's PROOF (the
  book proves 8.8.9 by repeating 8.6.1's proof, whose iterate side is (8.6.25)/(8.6.27)).  Everything
  reusable stays: the TARGET Props MM.FLM86NPFS.FockStep / MM.FLM86M8625.ResidueMatching8625NegSecondSlot,
  the landed bridges (fockStep_imp_oneMode, faceAtFamily_lattice, honestNegPairingCoeff_iff_atStates,
  honestNegPairingCoeffAtStates_iff_fockStep, residueMatching8625_iff_coeff_and_slot) and batch 233's
  MMFLM86ModeBlockReindex.lean; re-declaring the two `sorry`s restores the package;
* RE-ROUTED: corollary851AllStatesExists_evenCocycle (the all-states Corollary 8.5.1 (8.5.13), kept as a
  book result) now comes from the display plus the landed (8.10.5) finiteness, with NO matching: per
  pair, MM.FLM86RI.exists_iterateOf_zAligned_eq_zero gives a Z-threshold N, raised to the Nat window
  (max N 0).toNat, and MM.FLM810T861S.displayAllStates_evenCocycle gives (8.5.13) at that window;
* the #check interface was re-cut to what the file consumes, and section 1.1 now records where the
  matching's content lives.

Registered holes after this commit: TWO --
(1) MM.FLM810T861S.crossContraction_evenCocycle (the (8.4.25) cross contraction);
(2) MM.FLM88T889S.theorem889_faithful (Theorem 8.8.9 source-faithful, the hole Theorem 8.10.2 goes
through).  Both are the same mathematical task at bottom: the section 8.6 engine (8.6.4)--(8.6.27).

Build: the file is `--- OK ---` with no `sorry` (Probe/forbidden_tokens.py: "OK: no forbidden token
outside comments"); every remaining declaration's guard still prints sorryAx, now through exactly the
two holes above; FinalCheck.lean GREEN.  HANDOVER.md (the hole count 4 -> 2, rows 3 and 4), README.md
(the removed `sorry` row and the 8.10.2 row), ROADMAP.md (#3/#4 rows) and NOTES.md (section 139) record
the removal and the reading.
