Add min-spark-1.1 (Minima Labs)

Adds min-spark-1.1 (MinimaLabs/min-spark-1.1), a 5.76M-param release with native effort levels (2/3/4 passes through the shared core).

Scores are best-over-effort (max across effort levels per benchmark, matching the model card):
- ARC-Easy 36.45, ARC-Challenge 23.04 (acc_norm, lm-eval 0.4.12, zero-shot)
- HellaSwag 28.24, PIQA 57.40 (acc_norm)
- ArithMark-3 35.40 (official scorer, max_context=512)

Int Index computed with the board's own formula: 9.44 (#1 sub-10M bracket). Entry inserted next to min-spark (v1); no other changes.

index.html

@@ -1394,6 +1394,7 @@
     { name: 'Qana-mini-5M', org: 'fromzero', params: 4943712, paramsDisplay: '4.94M', arc: 34.97, hellaswag: 27.60, piqa: 57.18, arcChall: 23.21, arithmark3: 29.90, links: { card: 'https://huggingface.co/fromziro/Qana-mini-5M' } },
     { name: 'Bananamind',       org: 'bananamind' ,    params: 25100384,   paramsDisplay: '25M',   arc: 33.77, hellaswag: 25.98, piqa: 52.88, arcChall: 22.35, arithmark3: 29.80, arithmark2: 25.88, links: { card: 'https://huggingface.co/BananaMind/MiniBananaMind-V1' } },
     { name: 'min-spark', org: 'minimalabs', params: 5758572, paramsDisplay: '5.8Mx4*', arc: 37.08, hellaswag: 27.92, piqa: 54.35, arcChall: 23.21, arithmark3: 33.30, links: { card: 'https://huggingface.co/MinimaLabs/min-spark' } },
+    { name: 'min-spark-1.1', org: 'minimalabs', params: 5758572, paramsDisplay: '5.8Mx4*', arc: 36.45, hellaswag: 28.24, piqa: 57.40, arcChall: 23.04, arithmark3: 35.40, links: { card: 'https://huggingface.co/MinimaLabs/min-spark-1.1' } },
     { name: 'SupraElegans-500k', org: 'supralabs', params: 500000, paramsDisplay: '500k', arc: 21.00, hellaswag: 24.28, piqa: 49.73, arcChall: 22.00, arithmark3: 22.00, links: { card: 'https://huggingface.co/SupraLabs/SupraElegans-500k' } },
     { name: 'BananaMind-2-Micro', org: 'bananamind', params: 2933193, paramsDisplay: '2.9M', arc: 33.12, hellaswag: 28.27, piqa: 53.21, arcChall: 21.93, arithmark3: 34.00, arithmark2: 24.92, links: { card: 'https://huggingface.co/BananaMind/BananaMind-2-Micro' } },
     { name: 'Rambley-150M-RealBase', org: 'allura', params: 149_973_504, paramsDisplay: '150M', arc: 44.74, hellaswag: 32.29, arcChall: 24.40, piqa: 62.57, arithmark3: 37.20, links: { card: "https://huggingface.co/allura-org/Rambley-150M-RealBase" } },