Extract the panel SSE framing/teardown into the shared
api.sse.transition_event_stream helper and serve it on the admin plane
as GET /api/v1/admin/events, guarded by the admin router's ONE
require_admin and fed by the same app.state.publisher. The panel route
now uses the helper with its auth and exposure unchanged.
Task 92f75680-6d28-4060-bbfc-be808d5c6361
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
overseerandClaude Opus 5.5
74090a5d6b