feat(ana-ml2): replace Qwen3.5-9B vision with Qwen3.6-35B-A3B FP8 on GPU 1

Retire qwen35-vl (Qwen3.5-9B); add qwen36-vl serving the official FP8
Qwen3.6-35B-A3B vision MoE on :8007 under its TRUE name only — no alias.
qwen3.5-9b-fp8 is killed at vLLM AND the litellm gateway (404/400); a model is
never served under a prior model's name. Consumer (comfy-dev/arbo) notified +
migrated; arbo vkeys flipped to all-proxy-models; shared all-agents-local key
repointed to qwen3.6-35b-a3b.

GPU-1 rebalance for the heavier FP8 weights (~34 GB): granite 0.35->0.24 /
131K->64K, embed/rerank 0.05->0.03 (reclaimed util-reservation waste). Verified:
vision correct, 20-concurrent/endpoint load test = no OOM (~7.5 GB headroom).

Drop the llama-swap qwen3.5-9b GPU-0 pin (GPU 0 freed for the creative-writing
hot-swap card). NVFP4 was the lighter fit (~21 GB) but its vLLM ModelOpt-MoE
loader is broken (KeyError w2_input_scale / lm_head.input_scale, vllm #44081);
revisit when fixed.

stacks/litellm/conf/config.yaml

@@ -30,12 +30,13 @@ model_list:
     model_info:
       mode: chat
 
-  # --- Qwen3.5-9B vision-language (FP8) — vision + chat. vLLM on ana-ml2 GPU 1,
-  #     nightly-pinned (vision-FP8 exclusion fix), :8007. Explicit entry shadows
-  #     the "*" wildcard llama-swap route. ---
-  - model_name: qwen3.5-9b-fp8
+  # --- Qwen3.6-35B-A3B vision-language MoE (official FP8) — vision + chat. vLLM
+  #     on ana-ml2 GPU 1, :8007. Explicit entry shadows the "*" wildcard llama-swap
+  #     route. REPLACED qwen3.5-9b-fp8 2026-06-14 (the 9B is retired; this is a
+  #     35B-A3B MoE — served under its TRUE name, never aliased under the old one). ---
+  - model_name: qwen3.6-35b-a3b
     litellm_params:
-      model: hosted_vllm/qwen3.5-9b-fp8
+      model: hosted_vllm/qwen3.6-35b-a3b
       api_base: http://10.250.50.54:8007/v1
       api_key: os.environ/VLLM_API_KEY
     model_info: