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Dev-only POST /v1/dev/webhook/:type signs+injects a sample payload. apps/adapter- inspector (Vite): inbound raw events + outbound commands/attempts, simulate-inbound + test-send buttons. smoke-adapter proves signed->normalized->interaction, bad-sig 401, sandboxed outbound (no network). 55 tests; all 4 smokes pass; boundary enforced. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>