feat: publish HoloLake model-native living system source

product-source/hololake-platform/site/guides/configure-ai-models.md

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+# Configure AI Models
+
+Use model providers when you want chat over note context without giving an agent vault-write tools.
+
+## Local Models
+
+Local model targets are for tools such as Ollama and LM Studio. They usually need a base URL and model ID, and they usually do not need an API key.
+
+## API Models
+
+API model targets are for hosted providers such as OpenAI, Anthropic, Gemini, OpenRouter, or another OpenAI-compatible endpoint.
+
+HoloLake Era does not store provider API keys in vault settings. Choose one of the supported key paths:
+
+- Save the key locally on this device.
+- Read the key from an environment variable.
+- Use no key for local providers that do not require one.
+
+## Test The Connection
+
+After adding a provider, use the test action in Settings. A successful test means HoloLake Era reached the endpoint and the model replied.
+
+## Select The Target
+
+Once configured, choose the model from the AI target selector or set it as the default AI target in Settings.