fix: bound signal/imessage transport readiness waits

Co-authored-by: Szpadel <1857251+Szpadel@users.noreply.github.com>

src/infra/transport-ready.ts

@@ -0,0 +1,59 @@
+import { danger } from "../globals.js";
+import type { RuntimeEnv } from "../runtime.js";
+import { sleepWithAbort } from "./backoff.js";
+
+export type TransportReadyResult = {
+  ok: boolean;
+  error?: string | null;
+};
+
+export type WaitForTransportReadyParams = {
+  label: string;
+  timeoutMs: number;
+  logAfterMs?: number;
+  logIntervalMs?: number;
+  pollIntervalMs?: number;
+  abortSignal?: AbortSignal;
+  runtime: RuntimeEnv;
+  check: () => Promise<TransportReadyResult>;
+};
+
+export async function waitForTransportReady(params: WaitForTransportReadyParams): Promise<void> {
+  const started = Date.now();
+  const timeoutMs = Math.max(0, params.timeoutMs);
+  const deadline = started + timeoutMs;
+  const logAfterMs = Math.max(0, params.logAfterMs ?? timeoutMs);
+  const logIntervalMs = Math.max(1_000, params.logIntervalMs ?? 30_000);
+  const pollIntervalMs = Math.max(50, params.pollIntervalMs ?? 150);
+  let nextLogAt = started + logAfterMs;
+  let lastError: string | null = null;
+
+  while (true) {
+    if (params.abortSignal?.aborted) return;
+    const res = await params.check();
+    if (res.ok) return;
+    lastError = res.error ?? null;
+
+    const now = Date.now();
+    if (now >= deadline) break;
+    if (now >= nextLogAt) {
+      const elapsedMs = now - started;
+      params.runtime.error?.(
+        danger(`${params.label} not ready after ${elapsedMs}ms (${lastError ?? "unknown error"})`),
+      );
+      nextLogAt = now + logIntervalMs;
+    }
+
+    try {
+      await sleepWithAbort(pollIntervalMs, params.abortSignal);
+    } catch (err) {
+      if (params.abortSignal?.aborted) return;
+      throw err;
+    }
+  }
+
+  params.runtime.error?.(
+    danger(`${params.label} not ready after ${timeoutMs}ms (${lastError ?? "unknown error"})`),
+  );
+  throw new Error(`${params.label} not ready (${lastError ?? "unknown error"})`);
+}