fix: support multiple keys per action and harden runtime/parsing

src/lib/runtime.ts

@@ -6,11 +6,20 @@ import { type LlamaSwapConfig } from "./util";
 class Runtime {
   readonly tracker = new InflightTracker();
   offline = true;
+  private cfg?: LlamaSwapConfig;
   private feed?: EventFeed;
   private poller?: MetricsPoller;
   private listeners = new Set<() => void>();
 
   ensureConnections(cfg: LlamaSwapConfig): void {
+    const changed = !this.cfg || this.cfg.baseUrl !== cfg.baseUrl || this.cfg.apiKey !== cfg.apiKey;
+    if (changed) {
+      this.feed?.stop();
+      this.poller?.stop();
+      this.feed = undefined;
+      this.poller = undefined;
+      this.cfg = cfg;
+    }
     if (!this.feed) {
       this.feed = new EventFeed(cfg, (ev) => {
         this.tracker.apply(ev);