Tier 1 Stripe fidelity — sub updates, test clock billing, 3DS#2

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feat/tier1-stripe-fidelity

Apr 9, 2026

Commits on Apr 9, 2026

fix: SSE listener leak, Math.random client secret, invoice counter reset
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docs: add Tier 1 Stripe fidelity design spec
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docs: add Tier 1 Stripe fidelity implementation plan
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feat: add 3DS magic tokens to payment method map
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feat: add 3DS requires_action simulation for payment intents
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feat: add subscription update route with item swap, cancel_at_period_end, trial_end, metadata
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feat: emit customer.subscription.updated event on cancel
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feat: accept test_clock param on subscription create
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feat: test clock advance drives subscription billing cycles
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Add CLAUDE.md with build commands, architecture, and conventions
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Extract actionFlags to shared module, remove unused PriceService from TestClockService
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Remove dead touchedIds variable, hoist item amount calc out of loop, add past_due test
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