Add Boris-2 and Boris-2-Think (opencerebral, 144M)

Adds two OpenCerebral models (143.7M params each):

- [Boris-2](https://huggingface.co/opencerebral/Boris-2), base model
- [Boris-2-Think](https://huggingface.co/opencerebral/Boris-2-Think), Boris-2 fine-tuned on short reasoning traces ([OpenThink](https://huggingface.co/datasets/slmconsortium/OpenThink))

Scores: lm-evaluation-harness 0.4.12, zero-shot, float32, acc_norm for ARC-Easy, ARC-Challenge, PIQA and HellaSwag. AIME 2026 not run (0, per the submit guide).

| Model | ARC-E | ARC-C | PIQA | HellaSwag |
|---|---:|---:|---:|---:|
| Boris-2 | 59.76 | 32.00 | 72.85 | 50.27 |
| Boris-2-Think | 63.93 | 34.81 | 72.31 | 50.13 |

Also adds an `opencerebral` entry to CREATOR_COLORS. Evaluation details and contamination checks are in the model cards.

Action Automated by Claude Code

index.html

@@ -304,6 +304,7 @@
             "Martico2432": "#00ff00",
             "HuggingFaceTB": "#e7db0d",
             "SupraLabs": "#58a6ff",
+            "opencerebral": "#9d98e3",
         };
 
         // =========================================================================
@@ -348,6 +349,20 @@
                 params: 229688064, // exact parameter count integer
                 card_url: "https://huggingface.co/SupraLabs/Supra2.1-Ultra-Preview-001",
                 scores: { "AIME 2026": 0, "Arc_easy": 0.5046, "Arc_challenge": 0.2628, "PIQA": 0.6491, "HellaSwag": 0.3718 }
+            },
+            {
+                name: "Boris-2",
+                creator: "opencerebral",
+                params: 143724032,
+                card_url: "https://huggingface.co/opencerebral/Boris-2",
+                scores: { "AIME 2026": 0, "Arc_easy": 0.5976, "Arc_challenge": 0.3200, "PIQA": 0.7285, "HellaSwag": 0.5027 }
+            },
+            {
+                name: "Boris-2-Think",
+                creator: "opencerebral",
+                params: 143724032,
+                card_url: "https://huggingface.co/opencerebral/Boris-2-Think",
+                scores: { "AIME 2026": 0, "Arc_easy": 0.6393, "Arc_challenge": 0.3481, "PIQA": 0.7231, "HellaSwag": 0.5013 }
             }
             ];