chore: release v0.11.0

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0.11.0 (2026-08-12)

Minor Changes

• Added a VerifiableIntent protocol with separate validate and broadcast hooks plus bound Mpp.validate_credential() and Mpp.broadcast_credential() APIs, introduced a Relay adapter that delegates Tempo charge validation and finalization to the Tempo API relay (surfacing only safe machine-readable error codes and retryable 402 challenges on decline), and added a runnable charge-relay FastAPI example with a payer client. Relay idempotency keys use the pympp_ namespace, existing Stripe idempotency behavior remains unchanged, and Python validation details use snake_case. (by @parvahuja, #204)

Patch Changes

• Changed Stripe PaymentIntent and Tempo relay idempotency keys to use the SDK-independent mpp_ prefix while preserving their existing suffix construction. (by @parvahuja, #220)
• Fixed challenge selection to match on both method name and intent, preventing methods from being incorrectly matched to challenges with unsupported intents. Added intents property to the Method protocol to declare which payment intents each method supports. (by @mpp-agricola[bot], #216)