build_invoke_request already asserts `script.app_id == row.app_id`
(dispatcher.rs:752) before constructing an ExecRequest. The queue
dispatcher (`dispatch_one_queue`) and the HTTP outbox arm
(`build_http_request`) did not. validate_trigger_target blocks cross-
app registration at write time, so the gap was latent; but a hand-
edited row, a partial backup restore, or a script re-pointed across
apps post-hoc could otherwise execute one app's script under another
app's SdkCallCx, breaking the cross-app isolation boundary the SDK
relies on.
Adds the runtime guard at both sites:
* dispatch_one_queue — on mismatch, dead-letter the message so the
misfire is observable rather than silently dropped, and short-
circuit.
* build_http_request — on mismatch, return ResolveTrigger error; the
outer dispatch arm logs + drops the row (same path as decode
failures).
Audit ref: security_audit/02_authz_isolation.md (H-F1).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
bd64a25c97