Update headline checkpoint to 100k-game milestone: -4.66 +/- 0.535

README.md

@@ -22,11 +22,14 @@ placement points `[90, 45, 0, -135]`.
 `avg_pt` is the challenger's mean placement points **relative to the baseline**;
 `0` would mean parity. Higher is better.
 
+The headline checkpoint has a **100k-game milestone measurement**
+(`-4.66 +/- 0.535`, 16.0M decisions, zero fallbacks) — not a small-sample estimate.
+
 ## Checkpoints
 
 | File | Arch | Obs | Training | avg_pt vs baseline |
 |---|---|---|---|---|
-| `bc_v2_g186.pkl` | 256ch x 10blk (12.4M) | v2 (34x36 + 32) | BC on 10y logs + LR-1e-4 refine | **-4.86 +/- 1.54** (12k games) |
+| `bc_v2_g186.pkl` | 256ch x 10blk (12.4M) | v2 (34x36 + 32) | BC on 10y logs + LR-1e-4 refine | **-4.66 +/- 0.535** (100k games) |
 | `bc_lean_g402.pkl` | 256ch x 10blk (12.4M) | lean (34x20 + 26) | BC on 14y logs + LR-1e-4 refine | -5.07 +/- 1.54 (12k games) |
 | `bc_lean_w192_ep2.pkl` | 192ch x 8blk (5.3M) | lean | BC on 6y logs, 2 epochs | -8.87 +/- 2.70 (4k games) |
 | `rl_oracle_800m.pkl` | 256ch x 10blk | lean (actor) | oracle-critic PPO league, 0.8B steps | -8.38 +/- 2.65 (4k games) — **negative result** |