In the consolidated (multi-tenant) gateway the addon's static `self.config`
is empty — each request's real policy comes from the per-request `/resolve`.
`response()` and `websocket_message()` still matched routes against that empty
config, so inbound prompt-injection DLP and WebSocket credential/injection DLP
silently skipped every scan (fail-open) whenever the gateway ran multi-tenant.
This is backend-agnostic: the gateway image (and this addon) is shared by the
Firecracker, macOS, and docker consolidated backends.
Resolve the per-flow (config, slug, env) once in `request()`, stash it on
`flow.metadata`, and have both hooks read it back — falling back to the static
single-tenant values for a flow that never passed through `request()`. Reusing
the request's one `/resolve` avoids a round-trip per response and per WebSocket
frame.
Adds multi-tenant regression tests for both hooks that fail against the old
fall-open behaviour.
Refs: audit issue #400 (finding #2)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UoEZHDjv84ChoZbozQERhJ
didericis
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