[nkavian]

Summary

• Exclude Circle Gateway offers from managed and external-wallet buyer selection.
• Reject direct preparation and Gateway offers returned by external selection before creating a transaction or signing.
• Preserve compatible offers in mixed responses and distinguish Gateway-only responses from other unsupported offers.
• Use the existing unsupported-capability code with an explanatory message.

Validation

• make verify passed, including race-enabled tests, coverage checks, documentation, and consumer compilation.
• All seven shared conformance suites passed against the current local inflow-specs revision during the initial implementation.
• Regression tests cover direct preparation, HTTP rejection without paid replay, mixed managed/external routing through the foundation client, selection policies, caller-data preservation, and the error code and message.
• git diff --check passed.

No seller/facilitator changes, timeout-policy changes, dependency updates, or live payments.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.

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