Start in-process nats-server on VERAE_NATS_LISTEN (default 127.0.0.1:4223;
empty disables). Queue-subscribe verae.ts.request|verify|hash.report with
ledger/veraetime routing and authctx.Resolve from authorization/access_token.
Publish verae.ts.completed on core NATS only (no JetStream). Wire embed into
main alongside Streamable HTTP; stdio MCP via go-sdk StdioTransport.
MCP remains the AI tool surface. Importable pkg/tsnats covers Stamp,
Verify, HashReport over core NATS plus SubscribeCompleted; MCP optional
upstream reuses the same package. No JetStream for job-complete.
Sibling to the Python verae-mcp-timestamping-server. Full tool parity,
FileLedger, optional NATS (no JetStream for job-complete), official
go-sdk Streamable HTTP, shadow on :8001 then cutover checklist.