Target check (written 2026-10-12 14:43 Halifax, before the lock): the planned changes at every multiple of 5 from t = 2,000 to 5,495 in old starts 13 to 18 (4,200 states, each just after the gap was put back, as at the run's moments).
Immediate changes only: no branch was run on and no growth was looked at. Draws from (20261012, seed, 100 + state, use), which the run never uses.

Base runs: the code repeated the saved runs exactly (coherence and gap, every value to t = 5,495) in 6 of 6 starts.
Each group's coherence R_g at these states: 1% 0.0035, median 0.0252, 99% 0.0599, largest 0.0838.

Targets (each method: 8,400 group targets)
  dense: feasible and solved 8,400; infeasible 0; solver failures 0
  sparse: feasible and solved 8,400; infeasible 0; solver failures 0
Achieved R_g after / R_g before, both groups (smallest, average, largest; band; outside the band)
  dense up     1.4991 1.4999 1.5002   1.45 to 1.55   0
  dense down   0.4991 0.4999 0.5002   0.45 to 0.55   0
  dense sham   0.9991 0.9999 1.0003   0.95 to 1.05   0
  sparse up    1.4839 1.4990 1.5073   1.45 to 1.55   0
  sparse down  0.4839 0.4990 0.5073   0.45 to 0.55   0
  sparse sham  0.9820 0.9990 1.0097   0.95 to 1.05   0
Moments that would not be carried out: 0 of 4,200 (0.00%); the run allows at most 21 of 420 (5%). By kind: infeasible 0, solver failure 0, outside a band 0, code check 0
Matching: the same oscillators and the same size of move in all three arms at every state: True; largest relative difference in the sum of squared moves: 0.0e+00 (limit 1e-9)
Gap kept: largest |d_after - d_before| / |d_before|: 4.5e-10 (limit 1e-6)
Amplitude / R_g: dense median 1.034, largest 1.078; sparse median 10.457, largest 12.285
Largest move |dtheta| (radians): dense median 0.0320, 99% 0.0656, largest 0.0878; sparse median 0.3245, 99% 0.7105, largest 0.9867

What the changes did to the state (average over the states carried out, with the SD over states; reported, not used for any decision)
  dense
    R_A after / before: up +1.4999 (0.0001); down +0.4999 (0.0001); sham +0.9999 (0.0001) | up - sham +0.5000 (0.0000); down - sham -0.5000 (0.0000)
    R_B after / before: up +1.4999 (0.0001); down +0.4999 (0.0001); sham +0.9999 (0.0001) | up - sham +0.5000 (0.0000); down - sham -0.5000 (0.0000)
    change in C / C: up +0.4999 (0.0001); down -0.5001 (0.0001); sham -0.0001 (0.0001) | up - sham +0.5000 (0.0000); down - sham -0.5000 (0.0000)
    change in psi_A: up -0.00013 (0.00322); down +0.00039 (0.00967); sham -0.00014 (0.00558) | up - sham +0.00000 (0.00637); down - sham +0.00053 (0.01129)
    change in psi_B: up -0.00004 (0.00322); down +0.00013 (0.00967); sham +0.00007 (0.00576) | up - sham -0.00012 (0.00656); down - sham +0.00006 (0.01134)
    change in psi_A - psi_B: up -0.00009 (0.00459); down +0.00026 (0.01376); sham -0.00021 (0.00795) | up - sham +0.00012 (0.00909); down - sham +0.00047 (0.01604)
    change in |z2| A: up +0.000204 (0.001312); down -0.000021 (0.000520); sham +0.000054 (0.000633) | up - sham +0.000150 (0.001013); down - sham -0.000075 (0.001010)
    change in |z2| B: up +0.000182 (0.001267); down -0.000015 (0.000506); sham +0.000053 (0.000628) | up - sham +0.000128 (0.000984); down - sham -0.000068 (0.000989)
    change in |z3| A: up +0.000002 (0.000636); down -0.000001 (0.000622); sham -0.000019 (0.000510) | up - sham +0.000021 (0.000820); down - sham +0.000018 (0.000785)
    change in |z3| B: up +0.000003 (0.000632); down -0.000004 (0.000625); sham +0.000007 (0.000510) | up - sham -0.000004 (0.000810); down - sham -0.000011 (0.000798)
    change in |z4| A: up +0.000006 (0.000861); down -0.000004 (0.000862); sham +0.000023 (0.000927) | up - sham -0.000017 (0.001254); down - sham -0.000027 (0.001263)
    change in |z4| B: up +0.000009 (0.000853); down -0.000011 (0.000855); sham +0.000025 (0.000932) | up - sham -0.000016 (0.001237); down - sham -0.000036 (0.001279)
  sparse
    R_A after / before: up +1.4991 (0.0023); down +0.4991 (0.0023); sham +0.9990 (0.0034) | up - sham +0.5000 (0.0026); down - sham -0.5000 (0.0026)
    R_B after / before: up +1.4990 (0.0022); down +0.4990 (0.0022); sham +0.9989 (0.0034) | up - sham +0.5001 (0.0026); down - sham -0.4999 (0.0026)
    change in C / C: up +0.4989 (0.0018); down -0.5011 (0.0018); sham -0.0012 (0.0026) | up - sham +0.5001 (0.0019); down - sham -0.4999 (0.0019)
    change in psi_A: up +0.00019 (0.01224); down -0.00086 (0.03630); sham +0.00040 (0.01860) | up - sham -0.00021 (0.02157); down - sham -0.00125 (0.04006)
    change in psi_B: up +0.00003 (0.01229); down -0.00004 (0.03641); sham +0.00017 (0.01848) | up - sham -0.00014 (0.02142); down - sham -0.00021 (0.04017)
    change in psi_A - psi_B: up +0.00016 (0.01744); down -0.00082 (0.05182); sham +0.00023 (0.02611) | up - sham -0.00007 (0.03038); down - sham -0.00105 (0.05699)
    change in |z2| A: up +0.001755 (0.004973); down +0.000976 (0.003644); sham +0.001321 (0.004352) | up - sham +0.000434 (0.002031); down - sham -0.000345 (0.002066)
    change in |z2| B: up +0.001693 (0.004798); down +0.000963 (0.003495); sham +0.001305 (0.004209) | up - sham +0.000387 (0.002077); down - sham -0.000342 (0.002061)
    change in |z3| A: up +0.000439 (0.003277); down +0.000253 (0.002793); sham -0.000064 (0.001739) | up - sham +0.000503 (0.003188); down - sham +0.000317 (0.003081)
    change in |z3| B: up +0.000540 (0.003331); down +0.000173 (0.002661); sham -0.000060 (0.001719) | up - sham +0.000600 (0.003177); down - sham +0.000232 (0.003017)
    change in |z4| A: up +0.000206 (0.003175); down +0.000116 (0.002917); sham +0.000099 (0.003057) | up - sham +0.000107 (0.002954); down - sham +0.000018 (0.003020)
    change in |z4| B: up +0.000247 (0.003119); down +0.000133 (0.002927); sham +0.000071 (0.003003) | up - sham +0.000176 (0.003048); down - sham +0.000062 (0.003052)

Time: 216 s on 6 workers.