Changes
1. ModelPricingTable.jsx
• Compute `autoChain` as the intersection of `autoGroups` and the model’s `enable_groups` (order preserved).
• Display the chain banner only when `autoChain.length > 0`; banner shows the reduced path (e.g. `a → c → e`).
• Dropped obsolete `selectedGroup` prop; all callers updated.
2. ModelDetailSideSheet.jsx / PricingPage.jsx
• Removed forwarding of deleted `selectedGroup` prop.
Outcome
– “Auto group routing” appears only for models that actually participate in the chain, avoiding empty or irrelevant banners.
– Codebase simplified by eliminating an unused prop.
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