refactor(dashboard): remove unused billing surfaces and types

[izadoesdev]

Billing exposed unused upgrade/cancellation handlers, loading state, context methods, and duplicate customer/type wrappers. Remove those unused surfaces, read the existing customer value directly in history, and type only the four card fields the payment row renders. Delete the single-consumer payment-method type file. Net reduction: 84 lines across 5 files.

Cancellation confirmation, the dialog's pending guard, feedback, refetch, billing portal, purchase flow, feature gates, and pricing retain their behavior.

Validation: root lint, all 33 type/build tasks, all 27 test tasks, and 70 focused billing tests pass. Five synthetic cancellation/portal scenarios match before and after; six payment-card cases render exactly the same HTML. Independent final diff review found no issues. Checks used inline code and mocks, with no new files or live provider calls.

Scope: dashboard billing internals only. No dependency or file overlap with open RPC billing PR #790.

[coderabbitai]

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[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated
dashboard	Ready	Preview	Sep 14, 2026 7:43pm UTC
databuddy-status	Ready	Preview	Sep 14, 2026 7:43pm UTC

1 Skipped Deployment

Project	Deployment	Actions	Updated
documentation	Skipped		Sep 14, 2026 7:43pm UTC

[greptile-apps]

Greptile Summary

This PR simplifies dashboard billing internals by removing unused hook and context APIs, eliminating duplicate customer and payment-method wrappers, and consuming the existing customer data directly.

• Removes unused upgrade, cancellation, loading, balance, capability, and check surfaces.
• Updates billing history to use the canonical customer value.
• Narrows the payment-method row input to the card fields it renders.
• Preserves cancellation confirmation, billing portal access, feature gating, and billing-data recovery behavior.

Confidence Score: 5/5

The PR appears safe to merge with no actionable correctness, security, or repository-rule issues identified.

All removed surfaces have no remaining repository consumers, and the active cancellation, payment-method, history, portal, and feature-access paths retain their prior behavior.

Important Files Changed

Filename	Overview
apps/dashboard/app/(main)/billing/hooks/use-billing.ts	Removes unused hook state and API members while retaining cancellation, portal, usage, and refetch behavior.
apps/dashboard/components/providers/billing-provider.tsx	Removes unconsumed balance and plan-capability context methods without changing active access calculations.
apps/dashboard/app/(main)/billing/history/page.tsx	Replaces the duplicate customer alias with the canonical customer value and simplifies subscription-history access.
apps/dashboard/app/(main)/billing/page.tsx	Passes payment-card data directly to the single-purpose row while preserving existing empty and fallback rendering.
apps/dashboard/app/(main)/billing/types/billing.ts	Deletes the obsolete single-consumer payment-method wrapper types.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart LR
  CustomerHook[useCustomer] --> BillingData[useBillingData]
  BillingData --> BillingPage[Billing page]
  BillingData --> HistoryPage[Billing history]
  BillingPage --> Card[PaymentMethodRow card fields]
  BillingHook[useBilling] --> Cancellation[Cancellation confirmation]
  BillingHook --> Portal[Customer portal]
  BillingProvider[Billing provider] --> Access[Feature and usage access]

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