The Sources dialog listed every connector regardless of kind, so an HA source
could be bound to an MQTT broker and saved happily — then never ingest. The
picker was also clearable, and null meant opposite things per path: an HA
source with no connector is skipped outright, an MQTT one was subscribed on
every broker.
Filter candidates by the connector kind the source type needs (HA ->
HomeAssistant, MQTT/Tasmota -> MqttBroker; Tasmota has no endpoint kind of its
own), clear a selection invalidated by a type change, and preselect the sole
candidate so the single-broker case is one click. Offer a link to
/admin/connectors when none exists rather than an empty dropdown.
Save now rejects a missing or mismatched connector: such a source has no
connection details and would silently never ingest, so it should not be
possible to save it looking configured.
Claude-Session: https://claude.ai/code/session_01V6joyergfvVLFEizH1hJLd
schmidt.florian
9bd0d60cc8