=== Reverse Kuga-Satake fingerprint ===
rank V = 6
dim Cl^+(V) = 32
dim KS(V) = 16
dim A^4 = 16

=== Weil lattice fingerprint ===
shape = (6, 6)
det = d

=== Symmetry closure model ===
orbit rank = 2

=== Candidate frontiers ===
reverse_Kuga_Satake_rank6 rejected= False frontier= C4_Mumford_Tate
  C0_weight_tate PASS :: K3-type weight-two template
  C1_hodge_type PASS :: h20=1
  C2_quadratic_lattice PASS :: U^2 + <-1> + <-d>
  C3_endomorphism PASS :: matches imaginary quadratic parameter
  C4_Mumford_Tate UNKNOWN :: target-specific representation check remains
  C5_no_go PASS :: h20>1 maximal-MT no-go does not apply
  C6_monodromy UNKNOWN :: family realization remains
  C7_rationality PASS :: rational Hodge template
K3^[3]_hyperkahler_candidate rejected= False frontier= G0_lattice_realizability
  G0_lattice_realizability UNKNOWN :: requires geometric realization
  G1_correspondence UNKNOWN :: requires map/correspondence
  G2_canonical_seed PASS :: c2(T_X) is canonical and algebraic
  G3_residual_hit UNKNOWN :: must prove nonzero residual projection
  G4_symmetry_closure PASS :: one K-seed closes 2D defect
  G5_family_closure UNKNOWN :: requires deformation/moduli proof
generic_level_one_tensor_bridge rejected= True frontier= rejected
  C0_weight_tate PASS :: formal level-two tensor attempt
  C4_Mumford_Tate FAIL :: maximal MT with h20>1
  C5_no_go FAIL :: known theorem excludes W tensor W realization
published_2026_K3^[3]_bridge rejected= False frontier= G6_carrier_synthesis
  G0_lattice_realizability PASS :: published construction
  G1_correspondence PASS :: published map to hyperkahler sixfold
  G2_canonical_seed PASS :: c2(T_X)
  G3_residual_hit PASS :: pullback is non-divisor-generated Hodge-Weil class
  G4_symmetry_closure PASS :: K-action closes the 2D defect
  G5_family_closure PASS :: published deformation-theoretic argument
  G6_carrier_synthesis UNKNOWN :: optional explicit carrier step

ALL BRIDGE COMPILER CHECKS PASSED.
Spreadsheet runtime warmup failed during python startup
Traceback (most recent call last):
  File "/tmp/tmp.L2TH2Y5coc/artifact_tool_v2-2.8.22/artifact_tool/patches/warm_spreadsheet_runtime_on_startup.py", line 26, in warm_spreadsheet_runtime_on_startup
  File "/tmp/tmp.L2TH2Y5coc/artifact_tool_v2-2.8.22/artifact_tool/spreadsheet_warmup.py", line 785, in warm_spreadsheet_runtime
  File "/tmp/tmp.L2TH2Y5coc/artifact_tool_v2-2.8.22/artifact_tool/spreadsheet_warmup.py", line 720, in _warm_feature_flows
  File "/tmp/tmp.L2TH2Y5coc/artifact_tool_v2-2.8.22/artifact_tool/spreadsheet_warmup.py", line 704, in _warm_collaboration_flows
  File "/tmp/tmp.L2TH2Y5coc/artifact_tool_v2-2.8.22/artifact_tool/generated/interface/models.py", line 32317, in hydrate_crdt_from_proto
  File "/tmp/tmp.L2TH2Y5coc/artifact_tool_v2-2.8.22/artifact_tool/rpc/remote.py", line 749, in __call__
  File "/tmp/tmp.L2TH2Y5coc/artifact_tool_v2-2.8.22/artifact_tool/rpc/client.py", line 150, in call
artifact_tool.rpc.client.RemoteError: hydrateCrdtFromProto requires an empty collaborative document.
