Move the in-process startup-state singleton out of app.main into
app.api.startup_status so app.system can read it without a circular
import. No behavior change - main mutates the same shared object.
Also lands the design spec and implementation plan for the
system/health endpoint work (#145).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Introduces the flat ErrorMessage envelope builder with BAPI_SEND_REPORT /
BAPI_SEND_TRACE gating (report/trace off by default), plus the design
spec and implementation plan for the consistent-error-responses work.
Fixes#148Fixes#123
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
First commit of the SSE -> WebSocket migration (#252): the WebSocket
connection manager and its {type:auth,token} JWT handshake. Also lands
the migration's design spec and implementation plan.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
