feat: Google Pay

[simon-paris]

• Added googlepay implementation
• Add public API for getActiveDigitalWallets
• Add public API for createDigitalWalletContainer
• Fix testing certs, configuring the browser to trust the test certs is now required

[Copilot]

Pull request overview

Adds initial Google Pay (digital wallet) support to the SDK by introducing a digital-wallet data model from BFF → public types, rendering a Google Pay button component, and wiring a digital-wallet submission path into the existing submission lifecycle.

Changes:

• Introduce digital_wallets BFF schema + public digital wallet types and marshaling (bffDigitalWalletsToPublic), plus getActiveDigitalWallets().
• Add digital wallet UI components (Google Pay button + container + script-load gating) and SDK API to create/render/destroy digital wallet components.
• Update submission behavior-tree plumbing to support “instant submission errors” and digital-wallet submissions; adjust dev/test setup (certs + dev page script).

Reviewed changes

Copilot reviewed 25 out of 28 changed files in this pull request and generated 13 comments.

Show a summary per file

File	Description
test-key.pem	Fix PEM footer formatting for the dev/test private key.
test-cert.pem	Fix PEM footer formatting for the dev/test certificate.
sdk/src/utils.test.ts	Adjust cancellable sleep timing assertion to reduce flakiness.
sdk/src/styles.css	Add styling for a digital wallet section and Google Pay container.
sdk/src/public-sdk.ts	Add digital wallet APIs, state, rendering, and digital-wallet submission path.
sdk/src/public-options-types.ts	Add DigitalWalletOptions and a new (currently unused) public type.
sdk/src/public-data-types.ts	Add public XenditDigitalWallet / XenditDigitalWalletCode types.
sdk/src/locale/en.json	Add localized Google Pay error strings.
sdk/src/lifecycle/behaviors/submission.ts	Add SubmissionError support + “instant submission error” short-circuit.
sdk/src/lifecycle/behavior-tree.ts	Add blackboard fields for digital-wallet submissions and skip form validation for them.
sdk/src/lifecycle/behavior-tree.test.ts	Update test blackboard/world mock to include new fields.
sdk/src/data/test-data.ts	Add mock digital_wallets.google_pay BFF payload for tests/dev.
sdk/src/components/session-provider.tsx	Add DigitalWalletsContext and gate rendering based on SDK/session ACTIVE.
sdk/src/components/payment-channel.tsx	Remove redundant ACTIVE gating (now handled by session provider).
sdk/src/components/digital-wallet-wait-for-load.tsx	New helper component to defer rendering until a wallet SDK script loads.
sdk/src/components/digital-wallet-googlepay.tsx	New Google Pay button + payment data collection + submission integration.
sdk/src/components/digital-wallet-container.tsx	New wallet container to select/render the correct wallet implementation.
sdk/src/components/channel-picker.tsx	Add (currently disabled) digital wallet section insertion point.
sdk/src/components/channel-picker-digital-wallet-section.tsx	New channel picker section that inserts the Google Pay component.
sdk/src/bff-marshal.ts	Add bffDigitalWalletsToPublic marshaler for public digital wallet list.
sdk/src/backend-types/digital-wallets.ts	New backend type for the digital_wallets payload shape.
sdk/src/backend-types/common.ts	Extend BFF response type to include optional digital_wallets.
sdk/build.ts	Ensure the dev/test page loads the Google Pay JS SDK.
pnpm-lock.yaml	Lockfile updates for @types/googlepay.
package.json	Add @types/googlepay dependency.
README.md	Add (currently commented-out) docs sections for digital wallet APIs/support.
CONTRIBUTING.md	Update dev instructions: browser must trust the cert for Google Pay to work.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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[Copilot]

Pull request overview

Copilot reviewed 25 out of 28 changed files in this pull request and generated 8 comments.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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[ndyhrdy]

lgtm