fix(billing): remove grandfathered pricing option when subscription lapses

[nmgarza5]

Description

Remove the "Manage Existing Subscription" button from the AccessRestrictedPage when a multi-tenant user's subscription lapses.

Previously, users with lapsed subscriptions saw two confusing options:

• "Resubscribe" → creates new subscription at current pricing ($25)
• "Manage Existing Subscription" → opens Stripe portal where they could potentially renew at grandfathered rates ($8)

Now users only see "Resubscribe", which standardizes the renewal flow to always use current pricing. If a user pays their bill on time as expected, they will still use their grandfathered price.

How Has This Been Tested?

Additional Options

• [Optional] Override Linear Check

[cubic-dev-ai]

No issues found across 1 file

[greptile-apps]

Greptile Summary

Removes the "Manage Existing Subscription" button from the AccessRestrictedPage to prevent users with lapsed subscriptions from renewing at grandfathered rates ($8) through the Stripe customer portal. Users now only see the "Resubscribe" button which creates a new subscription at current pricing ($25).

Changes:

• Removed handleManageSubscription function and associated state management
• Removed "Manage Existing Subscription" button from UI
• Cleaned up unused imports (fetchCustomerPortal, useRouter)

The implementation is clean and complete. All unused code has been properly removed, which aligns with the codebase's preference for removing dead code rather than commenting it out.

Confidence Score: 5/5

• This PR is safe to merge with no issues
• The change is straightforward and intentional: removes the "Manage Existing Subscription" button and its handler to prevent users from accessing grandfathered pricing. Code is clean, unused imports were properly removed, and no logic errors introduced.
• No files require special attention

Important Files Changed

Filename	Overview
web/src/components/errorPages/AccessRestrictedPage.tsx	Removed "Manage Existing Subscription" button and associated handler function; cleanly removed unused imports

Sequence Diagram

sequenceDiagram
    participant User
    participant AccessRestrictedPage
    participant StripeCheckout
    
    Note over User,StripeCheckout: After This PR
    User->>AccessRestrictedPage: Sees lapsed subscription page
    AccessRestrictedPage->>User: Shows "Resubscribe" button only
    User->>AccessRestrictedPage: Clicks "Resubscribe"
    AccessRestrictedPage->>StripeCheckout: Creates new subscription session ($25)
    StripeCheckout->>User: Redirects to Stripe checkout

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