docs: fact-check knowledge base against live machines and vLLM source

Correct stale and incorrect facts after exhaustive verification:
- Dankclaw: NUMA node 0 = 31213 MB; disk 661G/1.1T/38%; vLLM 0.26.0 in
  /home/dank/vllm-rocm-venv (not vllm-env); clarify 96 GiB GPU-visible is a
  driver overcommit ceiling over 30 GiB physical (confirmed via sysfs
  mem_info_vram_total=103079215104)
- Dankserver: disk 729G/140G free/84%; /mnt/entropy 910G free; active service
  is vLLM EngineCore (22 GB), not llama-server; CPU model Ryzen 7 7700X
- index.md: Dankclaw 30GiB phys / 96GiB GPU-visible (was '61 GB unified');
  add deployment topology mermaid diagram
- vLLM defaults (from source): gpu_memory_utilization=0.92, max_num_seqs=128,
  swap_space removed (now --kv-offloading-size) across Overview/Index/RAM/Hybrid
- Quantization: FP8 not native on Ampere (RTX 3090) or RDNA 3.5 (gfx1151);
  add per-model hardware quantization notes; AWQ/GPTQ limited on ROCm
- Speculative decoding: add DFlash, DSpark, MTP, EAGLE3 to feature list
- Confirm Qwen3.6-27B and Qwen3.6-35B-A3B specs are correct (HF-verified)
- Production note: Dankclaw primary llama.cpp service runs ROCmFPX
  Ling-3.0-flash RocmFP4 MTP, not vLLM Qwen3.6-27B

docs/index.md

@@ -2,12 +2,34 @@
 
 Documentation for running vLLM inference on two local machines.
 
+## Deployment Topology
+
+```mermaid
+graph LR
+    subgraph Dankserver[NVIDIA Dankserver - Ubuntu 24.04]
+        A[RTX 3090 24GB + 62GB RAM]
+        B[vLLM 0.26.0 in Podman\nvllm-qwen36-dflash]
+        C[Qwen3.6-35B-A3B-FP8\n+ DFlash draft, port 8000]
+        A --> B --> C
+    end
+
+    subgraph Dankclaw[AMD Strix Halo - Ubuntu 26.04]
+        D[gfx1151 APU 30GiB phys / 96GiB GPU-visible]
+        E[ROCmFPX llama.cpp\n/ROCmFPX/build-strix-rocmfp4]
+        F[Ling-3.0-flash ROCmFP4-MTP\ndraft-mtp, port 8080]
+        D --> E --> F
+    end
+
+    G[LLM Clients / API] -->|HTTP :8000| B
+    G -->|HTTP :8080| E
+```
+
 ## Servers
 
-| Server                                  | GPU                           | VRAM / Memory         | OS           |
-| --------------------------------------- | ----------------------------- | --------------------- | ------------ |
-| [[Dankserver System Specs\|Dankserver]] | NVIDIA RTX 3090               | 24 GB VRAM, 62 GB RAM | Ubuntu 24.04 |
-| [[Dankclaw System Specs\|Dankclaw]]     | AMD Radeon 8060S (Strix Halo) | 61 GB unified         | Ubuntu 26.04 |
+| Server                                  | GPU                           | VRAM / Memory                       | OS           |
+| --------------------------------------- | ----------------------------- | ----------------------------------- | ------------ |
+| [[Dankserver System Specs\|Dankserver]] | NVIDIA RTX 3090               | 24 GB VRAM, 62 GB RAM               | Ubuntu 24.04 |
+| [[Dankclaw System Specs\|Dankclaw]]     | AMD Radeon 8060S (Strix Halo) | 30 GiB physical / 96 GiB GPU-visible | Ubuntu 26.04 |
 
 ## vLLM Reference