fix(quota): raise Node's 250ms connect-attempt cap for provider fetches (#3404)

Node's happy-eyeballs default (autoSelectFamilyAttemptTimeout=250ms)
aborts every connect attempt to provider endpoints whose TCP handshake
exceeds 250ms, so quota fetches from Node processes fail with
"fetch failed" while the Bun-based opencode CLI path succeeds (#3399).
Raise the per-attempt cap to 5s via a shared applyConnectAttemptTimeout()
helper called from the two Node entrypoints that host the quota module:
the Electron main process and the openchamber CLI. Family autoselection
stays enabled (::1 and IPv6→IPv4 fallback preserved); runtimes without
the setter are a no-op.

packages/web/server/lib/network-defaults.test.js

@@ -0,0 +1,36 @@
+import { describe, expect, it, vi } from 'vitest';
+import net from 'node:net';
+
+import { applyConnectAttemptTimeout, CONNECT_ATTEMPT_TIMEOUT_MS } from './network-defaults.js';
+
+describe('applyConnectAttemptTimeout', () => {
+  it('raises the per-attempt connect timeout on runtimes that expose the setter', () => {
+    const previous = net.getDefaultAutoSelectFamilyAttemptTimeout();
+    try {
+      expect(applyConnectAttemptTimeout()).toBe(true);
+      expect(net.getDefaultAutoSelectFamilyAttemptTimeout()).toBe(CONNECT_ATTEMPT_TIMEOUT_MS);
+    } finally {
+      net.setDefaultAutoSelectFamilyAttemptTimeout(previous);
+    }
+  });
+
+  it('is a no-op on runtimes without the setter', () => {
+    expect(applyConnectAttemptTimeout({})).toBe(false);
+  });
+
+  it('survives a throwing setter', () => {
+    const setDefaultAutoSelectFamilyAttemptTimeout = vi.fn(() => {
+      throw new Error('not supported');
+    });
+    expect(applyConnectAttemptTimeout({ setDefaultAutoSelectFamilyAttemptTimeout })).toBe(false);
+  });
+
+  it('leaves family autoselection itself untouched', () => {
+    const setDefaultAutoSelectFamily = vi.fn();
+    const setDefaultAutoSelectFamilyAttemptTimeout = vi.fn();
+    applyConnectAttemptTimeout({ setDefaultAutoSelectFamily, setDefaultAutoSelectFamilyAttemptTimeout });
+    expect(setDefaultAutoSelectFamilyAttemptTimeout).toHaveBeenCalledTimes(1);
+    expect(setDefaultAutoSelectFamilyAttemptTimeout).toHaveBeenCalledWith(CONNECT_ATTEMPT_TIMEOUT_MS);
+    expect(setDefaultAutoSelectFamily).not.toHaveBeenCalled();
+  });
+});