GenAI Refactor (#23253)

* Ensure runtime options are passed

* Add attribute info to prompt when configured

* Move GenAI plugins to dedicated directory

* Migrate prompts to dedicated folder

* Move chat prompts to prompts

* Implement reasoning traces in the UI

* Cleanup

* Make azure a subclass of openai

* Implement reasoning for other providers

* mypy

* Cleanup

web/src/utils/chatUtil.ts

@@ -27,6 +27,7 @@ type StreamChunk =
   | { type: "error"; error: string }
   | { type: "tool_calls"; tool_calls: ToolCall[] }
   | { type: "content"; delta: string }
+  | { type: "reasoning"; delta: string }
   | StatsChunk;
 
 /**
@@ -109,6 +110,19 @@ export async function streamChatCompletion(
         });
         return "continue";
       }
+      if (data.type === "reasoning" && data.delta !== undefined) {
+        updateMessages((prev) => {
+          const next = [...prev];
+          const lastMsg = next[next.length - 1];
+          if (lastMsg?.role === "assistant")
+            next[next.length - 1] = {
+              ...lastMsg,
+              reasoning: (lastMsg.reasoning ?? "") + data.delta,
+            };
+          return next;
+        });
+        return "continue";
+      }
       if (data.type === "stats") {
         const stats: ChatStats = {
           promptTokens: data.prompt_tokens,