Runtime: daemon + HTTP event stream

[csailer]

Summary

• Add a Go runtime daemon with an in-memory event bus, SSE stream, /emit, and /snapshot.
• Containerize the daemon with Dockerfile + docker-compose.

How to run

docker compose up --build

Curl

curl -s http://localhost:8787/health
curl -N http://localhost:8787/events
curl -s -X POST -H 'Content-Type: application/json'
-d '{"source":"qa","kind":"test","name":"ping","payload":{"ok":true}}'
http://localhost:8787/emit

Docs

• README: added “Runtime Daemon (HTTP + SSE)” section with endpoints, env-only config, docker usage, curl examples, and explicit non-inclusions.

Not included

• AWACS UI changes
• Library persistence
• Auth
• Prompt execution
• Tool execution

Contract note: “AWACS consumes /events via SSE; schema is the EventEnvelope documented here.”