Initial: llama.cpp router mode optimization guide for Apple Silicon

Full documentation of optimizing two LLMs on a single M5 Max GPU:
- KV cache quantization (Q4_0)
- Flash attention and batch tuning
- Router mode with --models-max 1
- Per-model thread optimization via INI presets
- Before/after benchmarks (12→48 t/s on 27B, 23→132 t/s on 35B)

configs/llama-models.ini

@@ -0,0 +1,14 @@
+[*]
+flash-attn = on
+cache-type-k = q4_0
+cache-type-v = q4_0
+batch-size = 512
+ubatch-size = 128
+spec-type = draft-mtp
+spec-draft-n-max = 3
+
+[model.Qwen3.6-35B-A3B-Q8_0]
+threads = 14
+
+[model.Qwen3.6-27B-Q8_0]
+threads = 10