- StationPriceCurrent: $primaryKey was null; set to 'station_id' + keyType
string so Eloquent has a sensible default for save() / find() paths.
- UserNotificationPreference: add FuelType enum cast on fuel_type so it
hydrates as an enum like every other price model.
- Plan::resolveCadenceForUser: cache for 1h under the same plans tag as
resolveForUser; HandleStripeWebhook busts both keys on subscription
events.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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