refactor : align config field names with Hugging Face

- dim -> hidden_size, n_layers -> num_hidden_layers
- dim_ffn -> intermediate_size, n_heads -> num_attention_heads
- n_kv_heads -> num_key_value_heads, max_len -> max_position_embeddings
- norm_eps -> rms_norm_eps, tie_weight -> tie_word_embeddings
- update model, inference, training, scripts, tests, docs

astrai/trainer/train_context.py

@@ -240,7 +240,7 @@ class TrainContextBuilder:
 
             group_size = strategy_kwargs.get("group_size", 1)
             rollout_batch_size = group_size * max(1, cfg.batch_per_device)
-            max_seq_len = getattr(context.model.config, "max_len", None)
+            max_seq_len = getattr(context.model.config, "max_position_embeddings", None)
 
             scheduler = InferenceScheduler(
                 model=context.model,