Get User Plan

Get all active subscription plans for the current user's client.

Returns all subscriptions with active status (active/trialing/past_due). If no active subscriptions exist, returns an empty list.

All data is sourced from:

• StripeSubscription model columns
• meta_data field (custom Stripe metadata)
• raw field (full Stripe subscription object)
• daily_token_limit column

Returns: List[ClientPlanDetails]: List of all active subscription plans for the client