replace stale pearl_meta config with proper architecture config

config.json

@@ -1,15 +1,14 @@
 {
-    "nacre_tip": "8586164c7d4b4a88e325b9986570f0bf296880586df545c8c445092b5008014a",
-    "step": 1397,
-    "hash": "8586164c7d4b4a88e325b9986570f0bf296880586df545c8c445092b5008014a",
-    "weights_file": "/data/rabbit/scholar-efs/pearl/weights_step1397.pt",
-    "checkpoint_digest": "a260f132fb7c74b059178d273c14a2e7258e6c100c5a2f8b57026a39643a068e",
-    "checkpoint_layout": "full",
-    "base_weights_file": "/data/rabbit/scholar-efs/pearl/weights_step0.pt",
-    "surface_file": "",
-    "tokenizer_id": "EleutherAI/gpt-neox-20b",
-    "tokenizer_hash": "",
-    "schema_version": "2.0",
-    "gurukul_version": "phase2_hardened",
-    "stage_id": "stage00_sanskrit"
+  "model_type": "rta-ssm",
+  "architecture": "RabbitCausalLM",
+  "variant": "fu-64",
+  "vocab_size": 50280,
+  "d_model": 2560,
+  "d_state": 2560,
+  "n_layers": 64,
+  "tokenizer_class": "GPTNeoXTokenizerFast",
+  "tokenizer_id": "EleutherAI/gpt-neox-20b",
+  "torch_dtype": "bfloat16",
+  "framework": "RtaForge-SSM",
+  "schema_version": "1.0"
 }