Revert "Implement shared event-trajectory reasoning backbone"

This reverts commit 06f29c0f0a.

evaluate_auc_v2.py

@@ -31,8 +31,8 @@ from dataset import HealthDataset
 from eval_data import load_sequence_eval_dataset
 from models import (
     DeepHealth,
-    validate_event_trajectory_config,
-    validate_event_trajectory_state_dict,
+    validate_traj_mixer_config,
+    validate_traj_mixer_state_dict,
 )
 from readouts import build_readout
 from targets import CHECKUP_IDX, NO_EVENT_IDX, PAD_IDX
@@ -182,7 +182,7 @@ def resolve_dist_mode_for_checkpoint(cfg_dist_mode: str, state_dict: Dict[str, A
 
 
 def build_model_from_dataset(args: argparse.Namespace, cfg: Dict[str, Any], dataset: HealthDataset) -> DeepHealth:
-    validate_event_trajectory_config(cfg)
+    validate_traj_mixer_config(cfg)
     model_target_mode = str(cfg_get(
         args, cfg, "model_target_mode", "next_token")).lower()
     if model_target_mode not in {"next_token", "all_future"}:
@@ -191,10 +191,10 @@ def build_model_from_dataset(args: argparse.Namespace, cfg: Dict[str, Any], data
         )
     return DeepHealth(
         vocab_size=dataset.vocab_size,
-        model_size=str(cfg_get(args, cfg, "model_size", "nano")),
-        n_reasoning_rounds=int(
-            cfg_get(args, cfg, "n_reasoning_rounds", 12)
-        ),
+        n_embd=int(cfg_get(args, cfg, "n_embd", 120)),
+        n_head=int(cfg_get(args, cfg, "n_head", 10)),
+        n_hist_layer=int(cfg_get(args, cfg, "n_hist_layer", 12)),
+        n_tab_layer=int(cfg_get(args, cfg, "n_tab_layer", 4)),
         n_types=dataset.n_types,
         n_cont_types=dataset.n_cont_types,
         n_categories=dataset.n_categories,
@@ -209,12 +209,7 @@ def build_model_from_dataset(args: argparse.Namespace, cfg: Dict[str, Any], data
 
 
 def load_model_state(model: torch.nn.Module, state_dict: Dict[str, Any]) -> None:
-    validate_event_trajectory_state_dict(
-        state_dict,
-        expected_d_model=model.d_model,
-        expected_n_trajectory=model.n_trajectory,
-        expected_n_reasoning_rounds=model.n_reasoning_rounds,
-    )
+    validate_traj_mixer_state_dict(state_dict)
     model.load_state_dict(state_dict, strict=True)