Kind `bedrock` speaks the Converse API for chat roles and InvokeModel for
Titan and Cohere embeddings. Requests are signed with AWS Signature
Version 4 implemented with crypto/hmac and crypto/sha256 only; the signer
is pinned by tests to signatures botocore produces for the same requests,
with and without a session token, so drift fails the build.
The credential is one secret reference, ACCESS_KEY_ID:SECRET_ACCESS_KEY
[:SESSION_TOKEN], encrypted together like every other provider key. The
region is read from the endpoint host, which must be a Bedrock runtime
host over HTTPS unless private endpoints are explicitly allowed; other
hosts are refused. Provider errors are scrubbed of the secret and token.
Migration 0024 widens the provider kind constraint; existing rows are
untouched and the down migration refuses while bedrock rows exist rather
than dropping configuration. UI kind selects, docs/llm-providers.md,
ADR-0010, ARCHITECTURE and the changelog are updated.
Foundation for the persistent, inspectable cognitive runtime: README,
implementation plan with phases and risk register, architecture,
security model, threat model, contributing guide, eight ADRs covering
the global workspace, event immutability, memory representation, LLM
abstraction, capability system, authentication, frontend and storage.
Includes Makefile, env example, compose stack (pgvector) and Dockerfile
skeleton, plus a record of the development environment assumptions.
Andy Dixon
andy