Move frank-default-large from :52625 to :7770 (dankclaw)

Operator request (2026-08-22): the primary inference server
(frank-default-large, the 27B CIRU model on Dankclaw) moves to the
standard llama.cpp port 7770. Both LLM services now listen on :7770,
distinguished by host (dankserver vs dankclaw).

Functional changes:
- scripts/frank-default-large.env: LISTEN_PORT 52625 -> 7770
- scripts/serve-frank-large.sh: default LISTEN_PORT 52625 -> 7770
- scripts/deploy.sh: LLM_HEALTH[dankclaw] -> :7770
- open-webui quadlet: OPENAI_API_BASE_URL -> 192.168.0.143:7770
  (re-pointed so chat keeps working; data dir preserved)
- scripts/bench-fast-greedy.sh: PORT 52625 -> 7770

Tests updated to the new topology (both LLM endpoints on :7770 by host;
open-webui -> :7770). Docs + pi KB updated; dated historical runbooks
keep their point-in-time ports. models.json (pi client) re-pointed to
:7770 separately, effective on the next client restart.

dankclaw/open-webui/quadlet/open-webui.container

@@ -5,8 +5,8 @@
 #
 # Chat UI for the LLM fleet. It runs on the CPU image (dankclaw is CPU-only, so
 # the :cuda image would waste a large pull for a GPU it cannot use) and points
-# its OpenAI connection at the live vLLM backend on this host via the bridge
-# gateway (192.168.0.143:52625, model frank-default-large). It publishes 3005
+# its OpenAI connection at the live llama.cpp backend on this host via the
+# host LAN IP (192.168.0.143:7770, model frank-default-large). It publishes 3005
 # (3000 is Gitea's HTTP port). Data persists under
 # /home/dank/Containers/open-webui/data. See docs/Dankclaw/OpenWebUI.md.
 #
@@ -29,7 +29,7 @@ ContainerName=open-webui
 Network=open-webui.network
 Image=ghcr.io/open-webui/open-webui:main
 PublishPort=3005:8080
-Environment=OPENAI_API_BASE_URL=http://192.168.0.143:52625
+Environment=OPENAI_API_BASE_URL=http://192.168.0.143:7770
 Environment=ANONYMIZED_TELEMETRY=False
 Environment=DO_NOT_TRACK=True
 Volume=/home/dank/Containers/open-webui/data:/app/backend/data