Source registry

Where information of each type tends to live. Used by the bridge to avoid guessing.

communication

source	P(source \| event)	n samples	last seen
messages	58%	3896	2026-05-09T12:37:16.779909
emails	42%	2863	2026-05-09T12:21:37+00:00

source	P(source \| event)	n samples	last seen
transactions	100%	610	2026-05-09

source	P(source \| event)	n samples	last seen
emails	94%	103	2026-05-09T12:21:37+00:00
messages	6%	6	2026-05-09T12:37:16.779909

source	P(source \| event)	n samples	last seen
calendar_events	100%	2955	2027-02-02 11:00

source	P(source \| event)	n samples	last seen
emails	80%	36	2026-05-09T12:21:37+00:00
messages	20%	9	2026-05-09T12:37:16.779909