Cannot fetch options for indexes.

[vspinu]

Thanks for the amazing initiative!!

I am experiencing issues fetching anything for SPX. For SPY the weekly expirations are not available even though they are show in option chains:

╰─$ ibkr options quotes --exchange=AMEX SPY 20260428
Failed to fetch option quotes for 'SPY' exp=20260428 via profile 'live': 'NoneType' object has no attribute 'secType'
╰─$ ibkr options quotes SPY 20260428                                                                                                                                                                              
Failed to fetch option quotes for 'SPY' exp=20260428 via profile 'live': Expiration '20260428' not available. Available: ['20260601', '20260605', '20260609', '20260612']...
╰─$ ibkr options quotes SPX 20260428                                                                                                                                                                              
Error 200, reqId 1: No security definition has been found for the request, contract: Stock(symbol='SPX', exchange='SMART', currency='USD')
Unknown contract: Stock(symbol='SPX', exchange='SMART', currency='USD')
Failed to fetch option quotes for 'SPX' exp=20260428 via profile 'live': 'NoneType' object has no attribute 'symbol'
╰─$ ibkr options quotes --exchange=CBOE SPX 20260428                                                                                                                                                              
Error 200, reqId 1: No security definition has been found for the request, contract: Stock(symbol='SPX', exchange='CBOE', currency='USD')
Unknown contract: Stock(symbol='SPX', exchange='CBOE', currency='USD')
Failed to fetch option quotes for 'SPX' exp=20260428 via profile 'live': 'NoneType' object has no attribute 'symbol'

[Paper-blue]

Additional reproduction: QQQ ETF with specific expirations

Tested on paper account (gateway-paper, port 4002) during live market hours (2026-05-25).

Symptom: Same `'NoneType' object has no attribute 'secType'` error on QQQ with certain expirations.

```
$ ibkr options quotes QQQ 20260612 --right C -p gateway-paper
Failed to fetch option quotes for 'QQQ' exp=20260612 via profile 'gateway-paper': 'NoneType' object has no attribute 'secType'
```

What works fine: Option buy preview with the same contract succeeds normally:
```
$ ibkr buy QQQ 1 --expiry 20260612 --strike 715 --right C --preview -p gateway-paper

→ Returns correct Option Preview with con_id, margin change, commission range ✅

```

What also fails: Non-weekly expirations that don't appear in chain (returns clean error, not a bug):
```
$ ibkr options quotes QQQ 20260619 --right C -p gateway-paper
Failed: Expiration '20260619' not available. Available: ['20260526', '20260527', ...]
```

So the bug is specifically in the options quotes contract qualification logic — the underlying contract lookup returns None for certain expiry/exchange combos, but the buy-path handles the same contract correctly.