fix: rename Stripe Checkout to Credit Card in purchase UI

[broody]

Summary

• Renames user-facing "Stripe Checkout" label to "Credit Card" in the starterpack wallet selection drawer and wallet selector

Test plan

• Verify wallet drawer shows "Credit Card" instead of "Stripe Checkout"
• Verify wallet selector shows "Credit Card" when stripe is selected

🤖 Generated with Claude Code

[vercel]

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Project	Deployment	Actions	Updated (UTC)
controller-example-next	Ready	Preview	Mar 25, 2026 7:04pm
keychain	Ready	Preview	Mar 25, 2026 7:04pm
keychain-storybook	Ready	Preview	Mar 25, 2026 7:04pm

[claude]

Claude finished @broody's task —— View job

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Documentation analysis complete

• Search docs for references to "Stripe Checkout"
• Determine if documentation updates are needed
• Update docs if necessary

Result

No documentation updates needed.

The PR renamed "Stripe Checkout" to "Credit Card" in the keychain purchase UI components. After searching the documentation repository, I found:

• No references to "Stripe Checkout" as a UI label
• All mentions of "Stripe" correctly reference it as the payment processor (e.g., "credit card payments are powered by Stripe")
• The documentation already uses "Credit Card" when referring to the payment method from a user perspective

The change was purely cosmetic in the UI and the documentation already followed the correct naming convention.

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