docs(research): fact-check web-research and chezmoi docs against sources

- open-models.md: Qwen2.5-VL 'best open vision model' superseded by
  Qwen3-VL (Apache 2.0 dense sizes; repo QwenLM/Qwen3-VL, arXiv
  2511.21631, verified via web search); decision table + mermaid +
  citations updated
- chezmoi-evaluation.md: fleet facts were fabricated — servers run
  Ubuntu 26.04 LTS (probed via ssh, both boxes), not 'Arch/FreeToken'
  (distro does not exist); dev workstation is AMD Ryzen 5 PRO 5650U,
  not Intel Ultra 7; frank-default-* endpoints retired 2026-10-18
- agentic-web-research/index.md: pi-era topology blurb replaced with
  current fleet endpoints
- self-hosted-web-agents.md: sample model frank-default-small ->
  frank-archon (endpoint/IP already correct: dankserver)
- mcp.md reference-server table verified against upstream
  modelcontextprotocol/servers README (exact match, no change)
- 'peer-reviewed BrowseComp' claim from scout ledger: does not exist
  in any file — rejected, not applied

Refs #29

omp-docs/agentic-web-research/self-hosted-web-agents.md

@@ -40,7 +40,7 @@ agent = Agent(
     task="Search for the latest AI news",
     llm=ChatOpenAI(
         base_url="http://192.168.0.235:7770/v1",
-        model="frank-default-small",
+        model="frank-archon",
         api_key="EMPTY",
     ),
 )