Initial Central AI Hub docs: brief, rules, README, outline context, architecture

docs/hub-architecture.mmd

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+flowchart LR
+    subgraph IN["Ways in"]
+        PHONE["Phone app<br/>wake word + voice"]
+        ADMIN["Admin app<br/>restricted actions"]
+        ESP["ESP32 voice<br/>Hey Jervis"]
+        DSH["dsh chat"]
+        CONSOLE["Console portal"]
+    end
+
+    HUB{{"HUB<br/>hear - understand - check - route - answer"}}
+
+    subgraph OUT["Destinations"]
+        HA["Home Assistant"]
+        SPK["Speakers<br/>Jervis TTS"]
+        NET["Internet control"]
+        ART["Artemis<br/>phone screen"]
+        PC["Paperclip<br/>slow jobs"]
+        WEB["Web search"]
+        APP["Apprise / NTFY"]
+    end
+
+    PHONE --> HUB
+    ESP --> HUB
+    DSH --> HUB
+    CONSOLE --> HUB
+    ADMIN --> HUB
+    HUB --> HA
+    HUB --> SPK
+    HUB --> NET
+    HUB --> ART
+    HUB --> PC
+    HUB --> WEB
+    HUB --> APP
+    PC -. result .-> HUB
+
+    click HUB "https://maps.lab.audasmedia.com.au/central_ai_llm_master/docs/" "View Archify Map"