feat: wire TradingGraph to use settings for model, temperature, and risk config

app/lib/tradingConfig.server.ts

@@ -0,0 +1,34 @@
+import { settingsService } from "./settings.server";
+import { OpenRouterClient } from "./openrouter";
+import { TradingGraph } from "../agents/tradingGraph";
+
+export interface TradingConfig {
+  model: string;
+  temperature: number;
+  maxDebateRounds: number;
+}
+
+const DEFAULT_CONFIG: TradingConfig = {
+  model: "openai/gpt-oss-120b:free",
+  temperature: 0.7,
+  maxDebateRounds: 3,
+};
+
+export async function getTradingConfig(): Promise<TradingConfig> {
+  try {
+    await settingsService.init();
+    const model = (await settingsService.get("llm.model")) ?? DEFAULT_CONFIG.model;
+    const temperature = (await settingsService.get("llm.temperature")) ?? DEFAULT_CONFIG.temperature;
+    const maxDebateRounds = (await settingsService.get("llm.maxDebateRounds")) ?? DEFAULT_CONFIG.maxDebateRounds;
+    return { model, temperature, maxDebateRounds };
+  } catch {
+    return DEFAULT_CONFIG;
+  }
+}
+
+export async function buildTradingGraph(apiKey: string): Promise<{ graph: TradingGraph; client: OpenRouterClient; config: TradingConfig }> {
+  const config = await getTradingConfig();
+  const client = new OpenRouterClient(apiKey, { defaultModel: config.model });
+  const graph = new TradingGraph(client, config.model);
+  return { graph, client, config };
+}