CAIN-INV-1501: Generic signed-webhook adapter

VERIFIED source compiles

Domain	VERIFICATION_AND_ASSURANCE
Tier	IMPLEMENTATION
Source	`cain/frontier/adapters/webhook.py`
Mapped tests ran	338
Passed / failed / errored	338 / 0 / 0
Compiles	yes

Mapped tests

billing-service/tests/test_billing.py

platform-gateway/tests/test_gateway.py

platform-gateway/tests/test_webhooks.py

tests/clawx_foundation/test_clawx21_messenger.py

tests/clawx_foundation/test_prompt6_security_gauntlet.py

tests/test_api_pages.py

Generated 2026-10-06T19:15:35Z from git unknown. This page is a republication of the run result; it is not an independent audit.

Same-project verification only. The tests are authored in this repository; no third party has reviewed or reproduced these results. VERIFIED means the mapped tests passed in this run, not that the mechanism is independently correct.