* fix(bedrock): forward x-pass- headers on the /bedrock/model pass-through routes
The /bedrock/model/{model}/invoke, invoke-with-response-stream, converse and
converse-stream routes built the pass-through call from the request body, so
x-pass- headers never reached Bedrock. The processor now hands the caller's
x-pass- headers to the pass-through route, keeps them out of the logged body
snapshot, and on Converse drops the invoke-only guardrail headers when the
deployment sets guardrailConfig and the request metadata header when the proxy
owns request metadata
* fix(bedrock): bill the served service tier on invoke pass-through and scope x-pass- forwarding to the Bedrock routes
* test(bedrock): assert forwarded x-pass- headers on the request Bedrock receives
* test(bedrock): gate the router-model x-pass- forwarding on the request Bedrock receives
* fix(bedrock): bill a caller's forwarded invoke guardrail and keep x-pass- headers out of guardrail vendor payloads
* fix(bedrock): bill a caller guardrail on every invoke model and replace a trace value Bedrock rejects
* fix(bedrock): keep guardrail traces out of chat responses, forward the trace header as sent, and drop credential x-pass- headers
---------
Co-authored-by: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
845f109524