节点 n27

Looking at the results:
- Round 0 (κ=0.55, scale_damp=0.45): 61.031, cell_state 56.00, local_spatial 57.56, shape_scale 69.59
- Round 1 (κ=0.50, scale_damp=0.50): 60.858, cell_state 56.54, local_spatial 57.30, shape_scale 68.29

Round 0 is best. The current program has κ=0.55, scale_damp=0.45. Key observations:
- κ=0.55 improved cell_state significantly (54.30→56.00) but hurt local_spatial (58.23→57.56) and shape_scale (69.91→69.59)
- scale_damp=0.45 vs 0.50: Round 1 shows scale_damp=0.50 recovers shape_scale (68.29→69.59 when damp was 0.45... wait no, Round 1 has shape_scale 68.29 which is worse). Actually comparing Round 0 (damp=0.45) vs Round 1 (damp=0.50): shape_scale went 69.59→68.29, so damp=0.45 is better for shape_scale. local_spatial went 57.56→57.30, also slightly better with 0.45.

So κ=0.55 with scale_damp=0.45 (current state) is the best combination. For Round 2, I should try κ=0.55 (keep) but adjust something else. The main weakness is local_spatial (57.56 vs parent 58.23). 

Options:
- Try κ=0.60 (between parent 0.65 and current 0.55) to recover some local_spatial while keeping cell_state gains
- Try a small gamma (xy expansion) for b-side cells to help local_spatial... but gamma=1.15 was tested and scored 60.40 (worse)
- Try adjusting the jitter magnitude
- Try pool_cap changes

Let me try κ=0.60 (compromise between 0.55 and 0.65) to see if we can get a better balance, keeping scale_damp=0.45. The parent baseline with κ=0.65 had local_spatial 58.23, κ=0.55 gave 57.56. κ=0.60 might give ~57.9 while still improving cell_state.

Alternatively, try κ=0.55 but add a slight xy expansion gamma=1.05 for b-side cells to help local_spatial without the full 1.15 that was harmful.

I'll try κ=0.60 with scale_damp=0.45 to find a sweet spot between the two κ values.

CHANGE: κ 从 0.55 调到 0.60（折中：κ=0.55 时 cell_state +1.70 但 local_spatial -0.67；κ=0.60 可能保留大部分 cell_state 增益同时恢复部分 local_spatial），scale_damp 保持 0.45。

<<<<<<< SEARCH
    scale_damp = _env("T2EI_SDAMP", 0.45)
    kappa = _env("T2EI_KAPPA", 0.55)
=======
    scale_damp = _env("T2EI_SDAMP", 0.45)
    kappa = _env("T2EI_KAPPA", 0.60)
>>>>>>> REPLACE