feat: add multi-channel Devii sessions with docs search mode and channel-aware conversation persistence

devplacepy/services/devii/llm.py

@@ -71,6 +71,30 @@ class LLMClient:
         )
         return message
 
+    async def complete_text(
+        self, messages: list[dict[str, Any]], temperature: float = 0.0
+    ) -> str:
+        payload = {
+            "model": self._settings.ai_model,
+            "messages": messages,
+            "temperature": temperature,
+        }
+        try:
+            response = await self._client.post(self._settings.ai_url, json=payload)
+        except httpx.HTTPError as exc:
+            raise LLMError(f"Could not reach the model endpoint: {exc}") from exc
+        if response.status_code >= 400:
+            raise LLMError(
+                f"Model endpoint returned {response.status_code}: {self._reason(response)}"
+            )
+        try:
+            data = response.json()
+            content = data["choices"][0]["message"]["content"] or ""
+        except (ValueError, KeyError, IndexError) as exc:
+            raise LLMError("Model endpoint returned an unexpected response.") from exc
+        record_usage(data.get("usage"))
+        return content
+
     async def summarize(self, text: str) -> str:
         payload = {
             "model": self._settings.ai_model,