device-voice-h5/openspec/changes/add-payment-submit-guard/tasks.md

1. Wallet Recharge Confirmation Submit Guard

• 1.1 Add a dedicated submitting state for the wallet recharge confirmation flow
• 1.2 Ignore repeated taps while confirmRecharge is already running
• 1.3 Bind the confirmation button state to the submitting state and restore it on every exit path

2. Package Payment Confirmation Submit Guard

• 2.1 Add a dedicated submitting state for the package payment confirmation flow
• 2.2 Ignore repeated taps while confirmPay is already running
• 2.3 Bind the confirmation button state to the submitting state and restore it on every exit path

3. Order List Immediate Payment Submit Guard

• 3.1 Add a dedicated submitting state for order list immediate payment
• 3.2 Ignore repeated taps while handleOrderPayment is already running for the current payment flow
• 3.3 Bind the order list immediate payment button state to the submitting state and restore it on every exit path

4. Wallet Recharge Order Immediate Payment Submit Guard

• 4.1 Add a dedicated submitting state for wallet recharge order immediate payment
• 4.2 Ignore repeated taps while handleRechargePayment is already running for the current payment flow
• 4.3 Bind the recharge order immediate payment button state to the submitting state and restore it on every exit path

5. Regression Verification

• 5.1 Verify repeated taps only trigger one effective submit in the wallet recharge modal
• 5.2 Verify repeated taps only trigger one effective submit in the package payment modal
• 5.3 Verify repeated taps only trigger one effective submit in the order list immediate payment flow
• 5.4 Verify repeated taps only trigger one effective submit in the wallet recharge order immediate payment flow
• 5.5 Verify users can retry after validation failure, payment cancel, payment failure, list refresh, and modal reopen