refactor(gateway): split server runtime

src/gateway/server-session-key.ts

@@ -0,0 +1,22 @@
+import { loadConfig } from "../config/config.js";
+import { loadSessionStore, resolveStorePath } from "../config/sessions.js";
+import {
+  getAgentRunContext,
+  registerAgentRunContext,
+} from "../infra/agent-events.js";
+
+export function resolveSessionKeyForRun(runId: string) {
+  const cached = getAgentRunContext(runId)?.sessionKey;
+  if (cached) return cached;
+  const cfg = loadConfig();
+  const storePath = resolveStorePath(cfg.session?.store);
+  const store = loadSessionStore(storePath);
+  const found = Object.entries(store).find(
+    ([, entry]) => entry?.sessionId === runId,
+  );
+  const sessionKey = found?.[0];
+  if (sessionKey) {
+    registerAgentRunContext(runId, { sessionKey });
+  }
+  return sessionKey;
+}