Add AI provider configuration

README.md

@@ -41,9 +41,23 @@ service.
 - `HTTP_PORT`, default `8080`
 - `DATABASE_URL`, required
 - `MIGRATE_ON_START`, default `true`
+- `LLM_BASE_URL`, primary OpenAI-compatible LLM endpoint
+- `LLM_API_KEY`, primary LLM API key
+- `LLM_MODEL`, default `qwen2.5-14b`
+- `LLM_TIMEOUT`, default `5m`
+- `WHISPERX_URL`, WhisperX endpoint for transcription jobs
+- `OPENCLAW_URL`, optional OpenClaw gateway URL if we route through OpenClaw
+  instead of direct vLLM
 
 ## Next integration step
 
 `telephony` should first mirror low-risk analysis jobs into this service while
 continuing local processing. Remote execution can then be enabled by feature
 flag per task type.
+
+## OpenClaw note
+
+Current Portal services call the local AI server directly: vLLM for LLM tasks
+and WhisperX for transcription. OpenClaw is not required for the current
+`ai-service` queue deployment. It becomes useful if we want centralized model
+routing, provider fallback, request policy and cross-model gateway behavior.