Multi-seed vanilla DFA early-epoch cos: lock-in for round 19 disambiguation

Round 20's minimal lock-in experiment: 3 seeds × {ep 1, ep 2} vanilla
DFA cosine. Closes the 'single-seed fluke' objection.

Vanilla DFA early-epoch deep cosines (l1-l4):

| seed | ep | ||g|| | deep mean |
|---|---|---|---|
| 42  | 1 | 6.7e-7 | -0.025 |
| 42  | 2 | 1.5e-7 | -0.038 |
| 123 | 1 | 6.5e-7 | +0.002 |
| 123 | 2 | 1.4e-7 | -0.006 |
| 456 | 1 | 3.9e-7 | +0.000 |
| 456 | 2 | 8.5e-8 | -0.009 |

3-seed mean at ep 1 (most meaningful regime): -0.008 ± 0.013
3-seed mean at ep 2: -0.018 ± 0.018

ALL 24 measurements (3 seeds × 2 ep × 4 deep layers) are in [-0.04, +0.02].
Compare to penalized DFA 3-seed mean +0.155 ± 0.025.

The penalty CREATING deep alignment finding is now seed-robust. Three
seeds × two early epochs all show vanilla deep cos essentially zero
even when ||g|| is in the meaningful regime.

This is the round 20 lock-in. Framing is locked.

1 files changed, 66 insertions, 0 deletions

diff --git a/results/vanilla_dfa_early_ckpts/vanilla_dfa_s456_log.json b/results/vanilla_dfa_early_ckpts/vanilla_dfa_s456_log.json
new file mode 100644
index 0000000..1208df9
--- /dev/null
+++ b/results/vanilla_dfa_early_ckpts/vanilla_dfa_s456_log.json
@@ -0,0 +1,66 @@
+{
+  "config": {
+    "seed": 456,
+    "max_epoch": 2,
+    "lr": 0.001,
+    "wd": 0.01,
+    "save_at": [
+      1,
+      2
+    ],
+    "output_dir": "results/vanilla_dfa_early_ckpts"
+  },
+  "log": [
+    {
+      "epoch": 0,
+      "h_norms": [
+        8.696551322937012,
+        8.737784385681152,
+        8.813130378723145,
+        8.844642639160156,
+        8.889528274536133
+      ],
+      "g_norms": [
+        0.0010079912608489394,
+        0.0010035138111561537,
+        0.0009970925748348236,
+        0.0009936393471434712,
+        0.000986678060144186
+      ]
+    },
+    {
+      "epoch": 1,
+      "h_norms": [
+        900.3377685546875,
+        3463.92626953125,
+        6660.5166015625,
+        10478.5126953125,
+        13466.513671875
+      ],
+      "g_norms": [
+        2.017142833210528e-06,
+        7.972002435963077e-07,
+        7.783806381667091e-07,
+        7.758338256280695e-07,
+        7.810436954969191e-07
+      ]
+    },
+    {
+      "epoch": 2,
+      "h_norms": [
+        1785.048828125,
+        14088.892578125,
+        36535.42578125,
+        61441.53515625,
+        73892.0078125
+      ],
+      "g_norms": [
+        9.084495218303346e-07,
+        1.7716872946493822e-07,
+        1.705153493958278e-07,
+        1.7151720044239482e-07,
+        1.728312355453454e-07
+      ]
+    }
+  ]
+}
\ No newline at end of file