[kevmo314]

Every subscribe reconcile re-POSTs channel.raid (both directions) and channel.channel_points_custom_reward_redemption.add/.update, and Twitch answers 409 (logged as twitch eventsub create outcome exists), costing 2-4 extra Helix requests per subscribe.

Root cause: Twitch lists every condition field of a type, filling unused ones with "". A read-only listing for channel 20135059 returns:

channel.raid  {"from_broadcaster_user_id": "", "to_broadcaster_user_id": "20135059"}
channel.raid  {"from_broadcaster_user_id": "20135059", "to_broadcaster_user_id": ""}
channel.channel_points_custom_reward_redemption.add     {"broadcaster_user_id": "20135059", "reward_id": ""}
channel.channel_points_custom_reward_redemption.update  {"broadcaster_user_id": "20135059", "reward_id": ""}

Our desired conditions omit those keys, so reflect.DeepEqual never matched. The same mismatch let these types slip past the legacy-callback gate.

Fix: compare conditions with sameCondition, which treats empty values as absent, in both the callback gate and the match.

Test: TestReconcileTwitchRecognizesEmptyConditionFields feeds reconcile a Helix-shaped listing with the empty fields and expects a single GET with no POSTs. It fails on main. TestSameCondition covers the comparison itself.