infra(ai): consolidate fleet Ollama consumers onto GX10 VIP 10.0.57.201

Repoints fc-chat, fc-ttsreader, knowledge, fc-llm-bridge (off the slow edge1
Pi5 10.0.57.17) and intranet (off the reimaged BLUEJAY-AI test laptop
10.0.56.132) to the GX10 (DGX Spark / GB10) Ollama over the PROD MetalLB VIP
10.0.57.201. GX10 serves gemma3:12b/gemma3:4b/qwen2.5:1.5b/nomic-embed-text/
llama3.2:1b on local NVMe, warm-pinned (keep_alive=-1).

fc-chat default model qwen2.5-coder:7b -> gemma3:12b (the coder model won't
pull reliably on the GX10; gemma3:12b is the warm fleet default + a better
general-chat model). Other consumers keep their exact models. Inline comments
referencing edge1/BLUEJAY-AI are now historical; the values are the GX10 VIP.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/fc-ttsreader/fc-ttsreader.yaml

@@ -605,7 +605,7 @@ spec:
             - name: TtsReader__Transcription__TimeoutSeconds
               value: "300"
             - name: TtsReader__Ollama__BaseUrl
-              value: "http://10.0.57.17:11434"
+              value: "http://10.0.57.201:11434"
             - name: TtsReader__Ollama__DefaultModel
               value: "gemma3:4b"
             - name: TtsReader__Ollama__TimeoutSeconds